Panel with built-in changeover switch

Abstract

To provide a switching unit built-in board capable of suppressing a wiring error.SOLUTION: In a switching unit built-in board 1, a first side terminal part 3a is constructed so as to be arranged to a one side Y1 from a center of the other direction in a power supply conductor insertion part 231 in the other direction of a first direction Y and a second direction Z, and be electrically connected to a first conductor A from the one side Y1 in the other direction. A second side terminal part 3b is arranged to the other side Y2 from the center of the other direction in the power supply conductor insertion part 231 in the other direction, and is constructed so as to be electrically connected to a second conductor B from the other side Y2 in the other direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a panel with a switching disconnector built therein.

Background Art

[0002] As a distribution board as the panel with the switching disconnector built therein, for example, there is one described in Patent Document 1. This distribution board includes a switching unit, a circuit breaker for distributed power supply, a circuit breaker for load, and a housing base. The switching unit includes a first input terminal portion connected to a commercial power supply, a second input terminal portion connected to a distributed power supply via the circuit breaker for distributed power supply, and an output terminal portion that supplies the input power to a load device via the circuit breaker for load. The primary side of the circuit breaker for distributed power supply is connected to the distributed power supply, and the secondary side is connected to the second input terminal portion. The primary side of the circuit breaker for load is connected to the output terminal portion, and the secondary side is connected to the load device. The switching unit, the circuit breaker for distributed power supply, the circuit breaker for load, etc. are housed in the housing base. Also, although not described in Patent Document 1, an opening is formed in the housing base above the switching unit and the circuit breaker for distributed power supply, and a distributed electric wire electrically connected to the distributed power supply and the primary side of the circuit breaker for distributed power supply, a commercial electric wire electrically connected to the commercial power supply and the first input terminal portion are inserted through the opening.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the distribution board described in Patent Document 1, the switching unit and the distributed power circuit breaker are arranged within the housing base such that the first input terminal and the primary side of the distributed power circuit breaker face upward, which is the opening side. Therefore, when inserting the distributed power wires and the commercial power wires into the housing base and wiring them through the opening, there was a risk of wiring errors occurring, such as the distributed power wires being connected to the first input terminal from above and the commercial power wires being connected to one side of the distributed power circuit breaker from above.

[0005] Furthermore, this problem occurred not only when the first input terminal was connected to the commercial power supply and the second input terminal was connected to the distributed power supply via the distributed power supply circuit breaker, but in all cases where the first input terminal and the second input terminal were connected to the commercial power supply or the distributed power supply, with or without the circuit breaker.

[0006] Therefore, the present invention aims to provide a control panel with a built-in changeover switch that can suppress wiring errors. [Means for solving the problem]

[0007] The present invention relates to a changeover switch for switching a power supply system that supplies electricity to a load system to a first power supply system or a second power supply system, comprising: a changeover switch having a first terminal portion electrically connectable to the first power supply system and a second terminal portion electrically connectable to the second power supply system; and a housing for housing the changeover switch, wherein the housing has a power supply conductor insertion portion through which a first conductor electrically connecting the first terminal portion to the first power supply of the first power supply system and a second conductor electrically connecting the second terminal portion to the second power supply of the second power supply system can be inserted, and the power supply conductor insertion portion is perpendicular to the front-to-back direction in the housing, The panel contains a changeover switch, wherein in one of the two mutually orthogonal directions, the changeover switch is located on the other side in one of the directions, the first terminal portion is located on one side of the center of the power conductor insertion portion in the other direction in the other direction, and is configured to be electrically connectable to the first conductor from one side in the other direction, and the second terminal portion is located on the other side of the center of the power conductor insertion portion in the other direction, and is configured to be electrically connectable to the second conductor from the other side in the other direction.

[0008] According to the above configuration, the power conductor insertion portion through which the first conductor and the second conductor can be inserted is located on the other side of the changeover switch in one direction, so that the first conductor and the second conductor can be smoothly inserted into the housing via the power conductor insertion portion. The inserted first conductor is electrically connected from one side in the other direction to the first side terminal portion located on one side of the center of the power conductor insertion portion in the other direction, and the inserted second conductor is electrically connected from the other side in the other direction to the second side terminal portion located on the other side of the center of the power conductor insertion portion in the other direction, so that the first conductor is wired to one side in the other direction and the second conductor is wired to the other side in the other direction.

[0009] Furthermore, the present invention includes a main circuit breaker housed within the housing and positioned on one side of the changeover switch in one direction, wherein the main circuit breaker is provided with a main input terminal section, and the changeover switch is provided with a load-side terminal section that can be electrically connected to the load system, and the load-side terminal section and the main input terminal section may be electrically connected.

[0010] According to the above configuration, the main circuit breaker housed in the enclosure is positioned to one side of the changeover switch in one direction, so that the main circuit breaker can prevent the insertion of the first conductor and the second conductor into the power conductor insertion portion, and since the load-side terminal portion and the main input terminal portion are electrically connected, electricity supplied from the first power system or the second power system can be supplied to the load system via the main circuit breaker.

[0011] Furthermore, in the present invention, the load-side terminal portion may be positioned behind the first-side terminal portion and the second-side terminal portion in the front-rear direction.

[0012] According to the above configuration, since the load-side terminal is positioned behind the first-side terminal and the second-side terminal in the front-to-back direction, for example, when a worker connects the first-side terminal to the first conductor and the second-side terminal to the second conductor, the load-side terminal can be prevented from interfering with the connection, making the connection work easier.

[0013] Furthermore, in the present invention, the main circuit breaker includes a main output terminal section, is housed within the casing, and includes a branch circuit breaker located to one side of the main circuit breaker in one direction, the branch circuit breaker includes a branch input terminal section, and the main output terminal section and the branch input terminal section may be electrically connected.

[0014] According to the above configuration, the branch breaker is positioned on one side of the main breaker in one direction, and the main output terminal and the branch input terminal are electrically connected. Therefore, within the housing, the electricity flows from the other side to the one side in one direction, making the flow of electricity easy to understand. [Effects of the Invention]

[0015] As described above, with the switchgear panel of the present invention, the first conductor can be wired to one side in the other direction, and the second conductor to the other side in the other direction, thus suppressing wiring errors. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is an external view of a control panel with a built-in changeover switch according to one embodiment of the present invention. [Figure 2] Figure 2 is a front view of the inside of the control panel with a built-in changeover switch according to the same embodiment. [Figure 3] Figure 3 is a front view of the inside of the control panel with a built-in changeover switch according to the same embodiment, showing the terminal cover and cover removed. [Figure 4] Figure 4 is a perspective view of the changeover switch, electrical equipment, and cover portion installed in the housing body of the changeover switch-integrated panel according to the same embodiment. [Figure 5] Figure 5 is a side view of the first direction as seen from one side in Figure 4. [Figure 6] Figure 6 is a side view of the first direction as seen from the other side in Figure 4. [Modes for carrying out the invention]

[0017] The following describes a control panel 1 with a built-in changeover switch according to one embodiment of the present invention.

[0018] In the following description, the direction in which the front and back of the switch-disconnector built-in panel 1 are aligned is referred to as the "front-back direction X", the direction orthogonal to the front-back direction X is referred to as the "first direction Y", and the direction orthogonal to the front-back direction X and the first direction Y is referred to as the "second direction Z". In the present embodiment, the first direction Y corresponds to the left-right direction when the switch-disconnector built-in panel 1 in the installed state is viewed from the front, and the second direction Z corresponds to the up-down direction. One side Y1 of the first direction Y is the right side, and the other side Y2 of the first direction Y is the left side. Also, one side Z1 of the second direction Z is the upper side, and the other side Z2 of the second direction Z is the lower side.

[0019] In addition, separately from the above-described respective directions in the switch-disconnector built-in panel 1, when explaining the configurations of the housing 2, the switch-disconnector 3, the electrical equipment 4, the conductive connection portion 8, and the cover portion 9, the respective vertical directions are defined as the "vertical direction z", the respective horizontal directions are defined as the "horizontal direction y", and the respective height directions are defined as the "height direction x". Note that the vertical direction z, the horizontal direction y, and the height direction x are orthogonal to each other. In FIG. 1, it is assumed that one side z1 of the vertical direction z is the upper side, the other side z2 of the vertical direction z is the lower side, one side y1 of the horizontal direction y is the right side, and the other side y2 of the horizontal direction y is the left side. Also, one side x1 of the height direction x is the front side of the paper surface of FIG. 1, and the other side x2 of the height direction x is the back side of the paper surface of FIG. 1.

[0020] The switch-disconnector built-in panel 1 is arranged between a plurality of power systems and load systems and is configured to switch the connection state between the plurality of power systems and load systems. For convenience of explanation, first, the power systems and load systems will be described.

[0021] The power supply system includes a first power supply system through which electricity flows from a first power source and a second power supply system through which electricity flows from a second power source. The first power supply system includes a first power source which is a commercial power supply (such as a power generation facility) and a first conductor A electrically connected to the first power source. The second power supply system includes a second power source which is a distributed power source and a second conductor B electrically connected to the second power source. The second power source is a power source capable of supplying power, for example, a storage battery is applicable. In the present embodiment, the first conductor A includes a first conductor A for the first phase and a first conductor A for the second phase. The same applies to the second conductor B. Note that the second power source may be a power source such as a power generation facility.

[0022] The load system includes a load and a load conductor C electrically connected to the load. Examples of the load include a distribution board and electrical appliances. In the present embodiment, the load conductor C includes a load conductor C for the first phase and a load conductor C for the second phase.

[0023] The switch-disconnector built-in panel 1 is electrically connected to the first power supply system, the second power supply system, and the load system. This switch-disconnector built-in panel 1 includes a housing 2, a switch-disconnector 3, an electrical device 4, a conductive connection part 8, and a cover part 9.

[0024] The housing 2 houses at least the switch-disconnector 3 to be described later. The housing 2 of the present embodiment houses the switch-disconnector 3, the electrical device 4, the conductive connection part 8, and the cover part 9. The housing 2 includes a housing part 20, a middle cover part 2A, and an outer cover part 2a.

[0025] The housing part 20 is for housing the switch-disconnector 3, the electrical device 4, the conductive connection part 8, etc. The housing part 20 includes a frame part 21 and a housing main body part 22 located within the frame part 21.

[0026] As shown in FIG. 2, the frame part 21 defines the periphery of the housing 2 in the vertical direction z and the horizontal direction y. The frame part 21 is configured in an annular shape. This frame part 21 extends in the height direction x in order to secure the depth of the housing 2 in the height direction x. The frame part 21 of the present embodiment is configured in a rectangular shape in which the vertical direction z is longer than the horizontal direction y in a front view.

[0027] The housing body 22 is mounted, for example, on a wall when the changeover switch 3 is installed. The housing body 22 is configured as a planar shape extending in the vertical direction z and the horizontal direction y. In this embodiment, the housing body 22 is rectangular in shape, with the vertical direction z being longer than the horizontal direction y. The housing body 22 is located on the other side x2 of the frame 21 in the height direction x of the housing 2 and defines the back of the housing 2. Therefore, the housing 20 is box-shaped with the housing body 22 as its bottom surface and the frame 21 as a side surface rising from the periphery of the housing body 22 on one side x1 in the height direction x, with the side facing the housing body 22 being open.

[0028] The housing body 22 of this embodiment is provided with a positioning structure for positioning the equipment to be housed in the housing section 20, a conductor insertion section 230 for inserting the first conductor A, the second conductor B, and the load conductor C into the housing section 20, and a connection support section 240 for supporting the breaker connection section 7, which will be described later.

[0029] The positioning structure protrudes from the housing body 22 in the height direction x. The positioning structure includes a switching positioning section 220 for positioning the changeover switch 3 (described later) within the housing section 20, and an electrical positioning section for positioning the electrical equipment 4 (described later) within the housing section 20.

[0030] As shown in Figure 2, the switching position fixing section 220 extends in the vertical direction z. In this embodiment, the pair of switching position fixing sections 220, 220 are spaced apart in the horizontal direction y. Also, the pair of switching position fixing sections 220, 220 in this embodiment are positioned opposite each other in the horizontal direction y.

[0031] As shown in Figure 2, the electrical positioning unit is located on one side z1 in the vertical direction z of the switching positioning unit 220. The electrical positioning unit includes a main breaker positioning unit 222 for positioning the main breaker 5 (described later) within the housing unit 20, and a branch breaker positioning unit 225 for positioning the branch breaker 6 (described later) within the housing unit 20.

[0032] As shown in Figure 2, the main trunk positioning section 222 comprises a main trunk one-way positioning section 223 extending in the lateral direction y, and a pair of main trunk other-way positioning sections 224, 224 extending in the lateral direction y and facing each other in the vertical direction z. The main trunk one-way positioning section 223 is positioned on the other side y2 in the lateral direction y and on the one side z1 in the vertical direction z compared to the pair of main trunk other-way positioning sections 224, 224.

[0033] As shown in Figure 2, the branch positioning section 225 extends in the lateral direction y. In this embodiment, a pair of branch positioning sections 225, 225 are spaced apart in the vertical direction z. Furthermore, the branch positioning section 225 in this embodiment is positioned on one side z1 in the vertical direction z than the main branch positioning section 222. Of the pair of branch positioning sections 225, 225, the branch positioning section 225 positioned on one side z1 in the vertical direction z extends in the lateral direction y, thereby defining one side z2 in the other side z in the vertical direction z of the load conductor insertion section 233, which will be described later.

[0034] As shown in Figures 2 and 3, the conductor insertion section 230 includes a power supply conductor insertion section 231 through which the first conductor A and the second conductor B can be inserted into the housing section 20, and a load conductor insertion section 233 through which the load conductor C can be inserted into the housing section 20.

[0035] The power conductor insertion section 231 is formed to penetrate the housing body section 22. In this embodiment, the power conductor insertion section 231 is configured as a trapezoidal opening in which the length in the horizontal direction y increases as you move from one side z1 to the other side z2 in the vertical direction z. Therefore, the power conductor insertion section 231 has one inclined section 232 on one side y1 in the horizontal direction y, which inclins toward one side y1 in the horizontal direction y as you move from one side z1 to the other side z2 in the vertical direction z, and the other inclined section 232 on the other side y2 in the horizontal direction y, which inclins toward the other side y2 in the horizontal direction y as you move from one side z1 to the other side z2 in the vertical direction z. In this embodiment, the length in the horizontal direction y of the power conductor insertion section 231 is longer than the length in the vertical direction z. Also, in this embodiment, the length in the horizontal direction y of the power conductor insertion section 231 is shorter than the distance between the pair of switching positioning sections 220, 220 that are spaced apart in the horizontal direction y. Furthermore, in this embodiment, the power conductor insertion portion 231 is located on the other side z2 in the vertical direction z of the housing body portion 22, relative to the positioning structure. Specifically, the power conductor insertion portion 231 is located on the other side z2 in the vertical direction z of the positioning structure, relative to the pair of switching positioning portions 220, 220.

[0036] The load conductor insertion portion 233 is formed to penetrate the housing body portion 22. As shown in Figures 2 and 3, this load conductor insertion portion 233 is configured as a rectangular opening in which the length in the lateral direction y is longer than the length in the vertical direction z. In this embodiment, the load conductor insertion portion 233 is located on one side z1 in the vertical direction z of the positioning structure. Therefore, the power supply conductor insertion portion 231 and the load conductor insertion portion 233 are spaced apart in the vertical direction z. Furthermore, in this embodiment, the load conductor insertion portion 233 is configured to be longer than the power supply conductor insertion portion 231 in the lateral direction y.

[0037] As shown in Figure 3, the connection support section 240 is used to support the breaker connection section 7, which will be described later. The connection support section 240 comprises a first isolation section 241 extending in the height direction x and the lateral direction y, and a second isolation section 242 extending in the height direction x and the vertical direction z. The second isolation section 242 is positioned one side y1 in the lateral direction y and one side z1 in the vertical direction z compared to the first isolation section 241. In the vertical direction z, the connection support section 240 is positioned between the main position determination section 222 and the branch position determination section 225.

[0038] As shown in Figure 1, the inner cover 2A is designed to cover the front surfaces of the changeover switch 3, electrical equipment 4, conductive connection part 8, and cover part 9 when they are housed in the housing 20. The inner cover 2A is configured as a flat plate extending in the vertical z direction and the horizontal y direction. The inner cover 2A is rectangular in shape, with the vertical z direction being longer than the horizontal y direction. In this embodiment, the inner cover 2A has window sections (not numbered) formed to match the positions of the changeover switch 3, main breaker 5, and branch breaker 6.

[0039] The outer cover portion 2a is for covering the inside of the housing portion 20. The outer cover portion 2a comprises an outer cover body portion 2b attached to the housing portion 20 and an outer cover door portion 2d that covers the outer cover body portion 2b. The outer cover body portion 2b has an opening 2c formed therein to expose a part of the inside of the housing portion 20. The outer cover door portion 2d covers the opening 2c. In this embodiment, the outer cover door portion 2d is attached to one side z1 in the vertical direction z of the outer cover body portion 2b. Furthermore, the outer cover door portion 2d in this embodiment is configured to be switchable by swinging between a closed position that covers the opening 2c of the outer cover body portion 2b and an open position that opens the opening 2c.

[0040] As shown in Figure 2, the enclosure 2 is installed on a wall with the horizontal direction y aligned to the first direction Y, the vertical direction z aligned to the second direction Z, and the height direction x aligned to the front-to-back direction X, such that the load conductor insertion portion 233 is positioned on one side Z1 of the second direction Z, and the power supply conductor insertion portion 231 is positioned on the other side Z2 of the second direction Z.

[0041] The changeover switch 3 is used to switch the power supply system that supplies electricity to the load system between the first power supply system and the second power supply system. The changeover switch 3 comprises a front section 30 and a rear section 31 that face each other in the height direction x and extend in the vertical direction z and the horizontal direction y, a pair of vertical side sections 32, 32 that extend in the vertical direction z and the height direction x, and a pair of horizontal side sections 33, 33 that extend in the horizontal direction y and the height direction x.

[0042] The changeover switch 3 has cutouts at one end y1 and the other end y2 in the lateral direction y of the front section 30. Therefore, the front section 30 comprises a front main body section 300 which is configured as one end in the height direction x, a front base section 301, and a rear base section 302.

[0043] Two front base sections 301 are arranged so as to be approximately the same in the height direction x. Of the two front base sections 301, one is positioned on one side y1 in the lateral direction y relative to the front main body section 300, and the other front base section 301 is positioned on the other side y2 in the lateral direction y relative to the front main body section 300. In this embodiment, the two front base sections 301 are positioned on the rear side 31 relative to the front main body section 300 in the height direction x.

[0044] The rear base portion 302 is positioned on the rear side 31 side of the two front base portions 301 in the height direction x. In the lateral direction y, the rear base portion 302 is positioned one side y1 side of one of the front base portions 301.

[0045] The two front base portions 301 and rear base portion 302 are provided with wall portions (not numbered) that protrude toward the front main body portion 300 in the height direction x. The wall portion in this embodiment comprises a pair of side wall portions 3A, 3A arranged in the lateral direction y, and an intermediate wall portion 3B arranged between the side wall portions 3A, 3A.

[0046] In this embodiment, the length of the lateral side portion 33 in the lateral direction y is longer than the length of the vertical side portion 32 in the vertical direction z. Therefore, the changeover switch 3 in this embodiment is configured such that the length in the lateral direction y is longer than the length in the vertical direction z.

[0047] The changeover switch 3 comprises a first-side terminal section 3a that can be electrically connected to the first power supply system, a second-side terminal section 3b that can be electrically connected to the second power supply system, and a load-side terminal section 3c that can be electrically connected to the load system. Furthermore, the changeover switch 3 of this embodiment has a changeover handle 3d for switching the power supply system to the first power supply system or the second power supply system. Therefore, the changeover switch 3 of this embodiment is a manual changeover switch.

[0048] The first terminal section 3a of this embodiment is a so-called "insertion type" terminal section that is fixed by inserting a screw. The first terminal section 3a is located on one side y1 in the lateral direction y. As shown in Figure 5, the first terminal section 3a of this embodiment is located on one front base section 301. Here, the first terminal section 3a of this embodiment comprises a first terminal section 3a for the first phase and a first terminal section 3a for the second phase. The first terminal section 3a for the first phase and the first terminal section 3a for the second phase are located between the side wall section 3A and the intervening wall section 3B on one front base section 301. Therefore, the first terminal section 3a for the first phase and the first terminal section 3a for the second phase are arranged side by side in the vertical direction z. Thus, the first terminal section 3a for the first phase and the first terminal section 3a for the second phase are separated in the vertical direction z by the intervening wall section 3B. Furthermore, in this embodiment, the first terminal portion 3a for the first phase and the first terminal portion 3a for the second phase are positioned between the side wall portion 3A and the intervening wall portion 3B, allowing the first conductor A to be connected from one side y1 in the lateral direction y. Thus, the space between the side wall portion 3A and the intervening wall portion 3B is open toward one side y1 in the lateral direction y, and the first conductor A can be inserted through this opening and connected to the first terminal portion 3a. As shown in Figure 5, in this embodiment, the first terminal portion 3a for the first phase and the first terminal portion 3a for the second phase are positioned at approximately the same height in the height direction x.

[0049] The second terminal section 3b of this embodiment is a so-called "insertion type" terminal section that is fixed by inserting a screw. As shown in Figure 3, the second terminal section 3b is located on the other side y2 in the lateral direction y. As shown in Figure 6, the second terminal section 3b of this embodiment is located on the other front base section 301. Therefore, in the changeover switch 3, the first terminal section 3a and the second terminal section 3b are provided on different sides of the front section 30 in the lateral direction y. Also, the first terminal section 3a and the second terminal section 3b are located at approximately the same position in the height direction x. Here, the second terminal section 3b of this embodiment comprises a second terminal section 3b for the first phase and a second terminal section 3b for the second phase. The second terminal section 3b for the first phase and the second terminal section 3b for the second phase are located between the side wall section 3A and the inter-wall section 3B. Therefore, the second terminal section 3b for the first phase and the second terminal section 3b for the second phase are arranged side by side in the vertical direction z. Therefore, the second terminal section 3b for the first phase and the second terminal section 3b for the second phase are separated in the vertical direction z by the intervening wall section 3B. Furthermore, in this embodiment, the second terminal section 3b for the first phase and the second terminal section 3b for the second phase are positioned between the side wall section 3A and the intervening wall section 3B, allowing the second conductor B to be connected from the other side y2 in the horizontal direction y. Thus, the space between the side wall section 3A and the intervening wall section 3B opens toward the other side y2 in the horizontal direction y, allowing the second conductor B to be inserted through this opening and connected to the second terminal section 3b. Note that, as shown in Figure 6, in this embodiment, the second terminal section 3b for the first phase and the second terminal section 3b for the second phase are positioned at approximately the same height in the height direction x.

[0050] The load-side terminal section 3c in this embodiment is a so-called "insertion-type" terminal section that is fixed by inserting a screw. The load-side terminal section 3c is located on one side y1 in the lateral direction y. As shown in Figure 5, in this embodiment, the load-side terminal section 3c is located on the rear base section 302. Therefore, in the lateral direction y, the load-side terminal section 3c in this embodiment is located one side y1 of the first side terminal section 3a and the second side terminal section 3b. In addition, in the height direction x, the load-side terminal section 3c in this embodiment is located on the rear side 31 of the first side terminal section 3a and the second side terminal section 3b.

[0051] The load-side terminal section 3c of this embodiment comprises a load-side terminal section 3c for the first phase and a load-side terminal section 3c for the second phase. The load-side terminal section 3c for the first phase and the load-side terminal section 3c for the second phase are arranged between the side wall section 3A and the inter-wall section 3B. Therefore, the load-side terminal section 3c for the first phase and the load-side terminal section 3c for the second phase are arranged side by side in the vertical direction z. Thus, the load-side terminal section 3c for the first phase and the load-side terminal section 3c for the second phase are separated in the vertical direction z by the inter-wall section 3B. Furthermore, because the load-side terminal section 3c for the first phase and the load-side terminal section 3c for the second phase are arranged between the side wall section 3A and the inter-wall section 3B in this embodiment, the conductive connection section 8, which will be described later, can be connected from one side y1 in the horizontal direction y. Therefore, the space between the side wall 3A and the intervening wall 3B is open toward one side y1 in the lateral direction y, and the conductive connection part 8, which will be described later, can be inserted through this opening, and the conductive connection part 8 can be connected to the load-side terminal part 3c. In this embodiment, the load-side terminal part 3c for the first phase and the load-side terminal part 3c for the second phase are arranged at approximately the same position in the height direction x.

[0052] As described above, in this embodiment, the first terminal section 3a is provided with first and second phase terminal sections 3a, the second terminal section 3b is provided with first and second phase terminal sections 3b, and the load-side terminal section 3c is provided with first and second phase load-side terminal sections 3c. Therefore, the changeover switch 3 in this embodiment is a changeover switch 3 used in a single-phase two-wire circuit.

[0053] The switching handle 3d is operated to switch the connected power supply system to either the first power supply system or the second power supply system. In this embodiment, the switching handle 3d is provided on the front main body 300. Therefore, in the lateral direction y, the switching handle 3d is positioned between the first terminal section 3a and the second terminal section 3b. Furthermore, the switching handle 3d in this embodiment is configured to be operable in the lateral direction y. Specifically, the switching handle 3d is configured to rotate in the lateral direction y. Thus, the switching handle 3d in this embodiment is configured to switch the connected power supply system to the first power supply system by rotating it toward the first terminal section 3a, and to switch the connected power supply system to the second power supply system by rotating it toward the second terminal section 3b.

[0054] The changeover switch 3 is installed in the housing body 22. In this embodiment, the front part 30 is positioned at the front and the rear part 31 is positioned at the rear, with the first terminal part 3a positioned on one side Y1 of the first direction Y and the second terminal part 3b positioned on the other side Y2 of the first direction Y, so that the horizontal direction y, vertical direction z, and height direction x are aligned with the first direction Y, the second direction Z, and the front-rear direction X, respectively. Here, the changeover switch 3 in this embodiment is configured such that the length in the horizontal direction y is shorter than the distance between the pair of changeover position fixing parts 220, 220. Therefore, the changeover switch 3 can be positioned between the pair of changeover position fixing parts 220, 220. Specifically, the changeover switch 3 in this embodiment is installed in the housing body 22 with the pair of vertical side parts 32, 32 in contact with the pair of changeover position fixing parts 220, 220. Therefore, when installed in the housing body 22, the changeover switch 3 is positioned in the second direction Z on one side Z1 of the power conductor insertion section 231 and on the other side Z2 of the load conductor insertion section 233.

[0055] As shown in Figure 3, the lateral side portion 33 is longer than the power conductor insertion portion 231 in the first direction Y. When the changeover switch 3 is installed in the housing body portion 22, the vertical side portion 32 located on one side Y1 of the first direction Y is located on one side Y1 of the first direction Y longer than one of the inclined portions 232, and the vertical side portion 32 located on the other side Y2 of the first direction Y is located on the other side Y2 of the first direction Y longer than the other inclined portion 232. Furthermore, the lateral side portion 33 located on the other side Z2 of the second direction Z is located on one side Z1 of the power conductor insertion portion 231 in the second direction Z longer than one side Z1 of the power conductor insertion portion 231 in the second direction Z. In addition, the lateral side portion 33 located on the other side Z2 of the second direction Z is aligned with one side Z1 of the power conductor insertion portion 231 in the second direction Z longer than one side Z1 of the power conductor insertion portion 231 in the second direction Z.

[0056] When the changeover switch 3 is installed in the housing body 22, the first terminal section 3a and the load-side terminal section 3c are positioned on one side Y1 of the power conductor insertion section 231 in the first direction Y. The second terminal section 3b is positioned on the other side Y2 of the power conductor insertion section 231 in the first direction Y. Furthermore, the first terminal section 3a is positioned toward one side Y1 of the first direction Y, so that it can be electrically connected to the first conductor A from one side Y1 of the first direction Y. The second terminal section 3b is positioned toward the other side Y2 of the first direction Y, so that it can be electrically connected to the second conductor B from the other side Y2 of the first direction Y. The load-side terminal section 3c is positioned toward one side Y1 of the first direction Y, beyond the first terminal section 3a, and is positioned toward one side Y1 of the first direction Y, so that it can be electrically connected to the conductive connection section 8 described later from one side Y1 of the first direction Y. In addition, the load-side terminal section 3c is positioned behind the first-side terminal section 3a and the second-side terminal section 3b in the front-rear direction X. The switching handle 3d is positioned towards the front so that it can be operated in the first direction Y.

[0057] Furthermore, as shown in Figure 2, in this embodiment, when the changeover switch 3 is installed in the housing body 22, the first terminal portion 3a and the second terminal portion 3b are covered from the front by the terminal cover portion 3X.

[0058] Furthermore, when the changeover switch 3 is installed in the housing body 22, the changeover handle 3d is located on one side Z1 of the second direction Z, from approximately the center in the first direction Y of the power conductor insertion section 231.

[0059] The electrical equipment 4 is positioned on the load side of the circuit relative to the changeover switch 3. The electrical equipment 4 includes an electrical input terminal section that can be electrically connected to the load-side terminal section 3c of the changeover switch 3, and an electrical output terminal section that can be electrically connected to the load. Specifically, the electrical equipment 4 in this embodiment includes a main circuit breaker 5, a plurality of branch circuit breakers 6, and a circuit breaker connection section 7 that electrically connects the main circuit breaker 5 and the branch circuit breakers 6.

[0060] The main circuit breaker 5 is designed to protect the load-side equipment by cutting the electrical circuit. The main circuit breaker 5 comprises a main front section 50 and a main rear section 51 that face each other in the height direction x and extend in the vertical direction z and the horizontal direction y, a pair of main vertical side sections 52, 52 that extend in the vertical direction z and the height direction x, and a pair of main horizontal side sections 53, 53 that extend in the horizontal direction y and the height direction x.

[0061] The main breaker 5 has a main front section 50 with one side y1 and the other side y2 cut out in the lateral direction y. Therefore, the main front section 50 comprises a main front body section 500 which is configured as one end in the height direction x, and a pair of main base sections 501, 501 which are located on the rear side 31 side of the main front body section 500 in the height direction x.

[0062] Of the pair of main trunk base sections 501, 501, one main trunk base section 501 is positioned on one side y1 in the lateral direction y relative to the main trunk front body section 500. The depth of the notch in the vertical direction z differs for one main trunk base section 501. Therefore, as shown in Figure 5, one main trunk base section 501 comprises, in the height direction x, the other main trunk base body section 502 positioned on the main trunk front body section 500 side and the other main trunk base body section 503 positioned on the main trunk rear body section 51 side. In this embodiment, the one main trunk base body section 503 is positioned on one side z1 in the vertical direction z, and the other main trunk base body section 502 is positioned on the other side z2 in the vertical direction z.

[0063] One main branch section 501 is provided with a pair of side walls 5A, 5A at both ends in the vertical direction z, and an intermediate wall 5B is provided between one main branch body section 503 and the other main branch body section 502.

[0064] Of the pair of main trunk base sections 501, 501, the other main trunk base section 501 is positioned on the other side y2 in the lateral direction y from the main trunk front body section 500. The other main trunk base section 501 has a different notch depth in the vertical direction z. Therefore, as shown in Figure 6, the other main trunk base section 501 comprises, in the height direction x, the other main trunk base body section 502 positioned on the main trunk front body section 500 side and the one main trunk base body section 503 positioned on the rear side 31 side. In this embodiment, the one main trunk base body section 503 is positioned on one side z1 in the vertical direction z, and the other main trunk base body section 502 is positioned on the other side z2 in the vertical direction z.

[0065] The other main branch section 501 is provided with a pair of side walls 5A, 5A at both ends in the vertical direction z, and an intermediate wall 5B is provided between the main branch body section 503 and the other main branch body section 502.

[0066] As shown in Figure 5, in this embodiment, of the pair of main trunk vertical side sections 52, 52, the main trunk vertical side section 52 located on one side y1 in the horizontal direction y has a main trunk mounting section 520 formed thereon, which is used when installing the main breaker 5 into the housing body section 22. The main trunk mounting section 520 is configured as a plate shape that extends in the vertical direction z and the horizontal direction y. Screw holes for inserting screws are formed in this main trunk mounting section 520. Furthermore, this main trunk mounting section 520 is located on one side y1 in the horizontal direction y from the main trunk vertical side section 52.

[0067] In this embodiment, the length of the horizontal side portion 53 of the main breaker in the lateral direction y is longer than the length of the vertical side portion 52 of the main breaker in the vertical direction z. Therefore, the main breaker 5 in this embodiment is configured such that the length of the horizontal direction y is longer than the length of the vertical direction z.

[0068] The main circuit breaker 5 comprises a main input terminal section 5a, a main output terminal section 5b, and a main handle 5c.

[0069] The main input terminal section 5a in this embodiment is a so-called "insertion type" terminal section that is fixed by inserting a screw. The main input terminal section 5a is located on one side y1 in the horizontal direction y. In this embodiment, the main input terminal section 5a is located on one main base section 501. Here, the main input terminal section 5a in this embodiment comprises a main input terminal section 5a for the first phase and a main input terminal section 5a for the second phase. The main input terminal section 5a for the first phase is located on the other main base section 502, and the main input terminal section 5a for the second phase is located on the one main base section 503. Therefore, in this embodiment, the main input terminal section 5a for the first phase and the main input terminal section 5a for the second phase are located at different positions in the height direction x. Also, the main input terminal section 5a for the first phase and the main input terminal section 5a for the second phase are located side by side in the vertical direction z. The main input terminal section 5a for the first phase and the main input terminal section 5a for the second phase are separated in the vertical direction z by a partition wall 5B. Furthermore, in this embodiment, the main input terminal section 5a for the first phase and the main input terminal section 5a for the second phase are positioned between the side wall 5A and the partition wall 5B, allowing the conductive connection section 8, described later, to be connected from one side y1 in the horizontal direction y. Thus, the space between the side wall 5A and the partition wall 5B opens toward one side y1 in the horizontal direction y, allowing the conductive connection section 8, described later, to be inserted through this opening and connected to the main input terminal section 5a. In this embodiment, the main input terminal section 5a is configured as the electrical input terminal section of the electrical equipment 4.

[0070] The main output terminal section 5b of this embodiment is a so-called "insertion type" terminal section that is fixed by inserting a screw. The main output terminal section 5b is located on the other side y2 in the lateral direction y. The main output terminal section 5b of this embodiment is located on the other main base section 501. Therefore, the main input terminal section 5a and the main output terminal section 5b are provided at separate ends in the lateral direction y of the main breaker 5. Here, the main output terminal section 5b of this embodiment comprises a main output terminal section 5b for the first phase and a main output terminal section 5b for the second phase. The main output terminal section 5b for the first phase is located on the other main base section 502, and the main output terminal section 5b for the second phase is located on the one main base section 503. Therefore, the main output terminal section 5b for the first phase and the main output terminal section 5b for the second phase are located at different positions in the height direction x. Furthermore, the main output terminal section 5b for the first phase and the main output terminal section 5b for the second phase are arranged side by side in the vertical direction z. The main output terminal section 5b for the first phase and the main output terminal section 5b for the second phase are separated in the vertical direction z by a partition wall 5B. Moreover, in this embodiment, the main output terminal section 5b for the first phase and the main output terminal section 5b for the second phase are arranged between the side wall 5A and the partition wall 5B, so that the breaker connection section 7, which will be described later, can be connected from the other side y2 in the horizontal direction y. Thus, the space between the side wall 5A and the partition wall 5B is open toward the other side y2 in the horizontal direction y, and the breaker connection section 7, which will be described later, can be inserted through this opening and connected to the main output terminal section 5b.

[0071] The main handle 5c is operated to switch between electrical conduction and deconduction. In this embodiment, the main handle 5c is located on the main body 500 on the front of the main circuit. Therefore, the main handle 5c is positioned between the main input terminal 5a and the main output terminal 5b in the lateral direction y. Furthermore, the main handle 5c in this embodiment is configured to be operable in the lateral direction y. Specifically, the main handle 5c is configured to rotate in the lateral direction y.

[0072] The main circuit breaker 5 is installed in the housing body 22. In this embodiment, the main circuit breaker 5 is installed in the housing body 22 with the lateral direction y, vertical direction z, and height direction x aligned to the first direction Y, the second direction Z, and the front-to-back direction X, respectively, such that the main circuit breaker front part 50 is positioned at the front and the main circuit breaker rear part 51 is positioned at the rear, the main circuit breaker input terminal part 5a is positioned on one side Y1 of the first direction Y, and the main circuit breaker output terminal part 5b is positioned on the other side Y2 of the first direction Y. In this embodiment, the main circuit breaker 5 is installed in the housing body 22 such that the main circuit breaker side part 53, 53 positioned on one side Z1 of the second direction Z abuts against the main circuit breaker one position fixing part 223, and the main circuit breaker mounting part 520 abuts against the pair of main circuit breaker other position fixing parts 224, 224. Therefore, when installed in the housing body 22, the main circuit breaker 5 is positioned on one side Z1 of the second direction Z than the changeover switch 3. Specifically, the main circuit breaker 5 is positioned next to the changeover switch 3 in the second direction Z. Therefore, the main circuit breaker side section 53, which is positioned on the other side Z2 of the second direction Z, is positioned opposite the side section 33, which is positioned on one side Z1 of the second direction Z. The main circuit breaker input terminal section 5a is positioned one side Z1 of the first side terminal section 3a and the load side terminal section 3c in the second direction Z, and the main circuit breaker output terminal section 5b is positioned one side Z1 of the second side terminal section 3b in the second direction Z. Specifically, as shown in Figure 5, the main circuit breaker input terminal section 5a is positioned next to the first side terminal section 3a and the load side terminal section 3c in the second direction Z, and as shown in Figure 6, the main circuit breaker output terminal section 5b is positioned next to the second side terminal section 3b in the second direction Z.

[0073] When the main breaker 5 is installed in the housing body 22, the main breaker 5 is positioned relative to the changeover switch 3 in the first direction Y such that the main vertical side portion 52 located on one side Y1 of the first direction Y is positioned on the other side Y2 of the first direction Y than the vertical side portion 32 located on one side Y1 of the first direction Y, and the main vertical side portion 52 located on the other side Y2 of the first direction Y is positioned on the other side Y2 of the first direction Y than the vertical side portion 32 located on the other side Y2 of the first direction Y.

[0074] Furthermore, when the main breaker 5 is installed in the housing body 22, the main input terminal 5a is positioned on one side Y1 of the first direction Y, and the main output terminal 5b is positioned on the other side Y2 of the first direction Y. The main input terminal 5a is positioned facing one side Y1 of the first direction Y, so that it can be electrically connected to the conductive connection part 8, which will be described later, from one side Y1 of the first direction Y. The main output terminal 5b is positioned facing the other side Y2 of the first direction Y, so that it can be electrically connected to the breaker connection part 7, which will be described later, from the other side Y2 of the first direction Y. In addition, the main handle 5c is positioned on the front side so that it can be operated in the first direction Y.

[0075] As shown in Figure 5, in this embodiment, when the main breaker 5 is installed in the housing body 22, the main input terminal 5a for the first phase is positioned in approximately the same location as the first terminal 3a in the front-to-back direction X. The main input terminal 5a for the second phase is positioned behind the first terminal 3a in the front-to-back direction X, and is positioned in approximately the same location as the load terminal 3c. Furthermore, as shown in Figure 6, the main output terminal 5b for the first phase is positioned in approximately the same location as the second terminal 3b in the front-to-back direction X. In addition, the main output terminal 5b for the second phase is positioned behind the second terminal 3b in the front-to-back direction X.

[0076] The branch breaker 6 is designed to protect equipment on the load side by cutting the circuit. The branch breaker 6 is located on the load side of the circuit, closer to the main breaker 5. The branch breaker 6 comprises a branch front section 60 and a branch rear section 61 that face each other in the height direction x and extend in the vertical direction z and horizontal direction y, a pair of branch vertical side sections 62, 62 that extend in the vertical direction z and height direction x, and a pair of branch horizontal side sections 63, 63 that extend in the horizontal direction y and height direction x. In this embodiment, the length of the branch breaker 6 in the vertical direction z is longer than the length of the horizontal direction y.

[0077] The branch circuit breaker 6 includes a branch input terminal section 6a that is electrically connected to a circuit breaker connection section 7, which will be described later, a branch output terminal section 6b that can be electrically connected to a load conductor C, and a branch handle 6c for switching between electrical conduction and deconduction.

[0078] The branch input terminal section 6a of this embodiment is configured as a so-called plug-in terminal. The branch input terminal section 6a is provided on the branch side surface section 63 located on the other side z2 in the vertical direction z. The branch input terminal section 6a of this embodiment includes a branch input terminal section 6a for the first phase and a branch input terminal section 6a for the second phase. In this embodiment, the branch input terminal section 6a for the first phase and the branch input terminal section 6a for the second phase are located at different positions in the height direction x. As shown in Figure 6, in this embodiment, in the height direction x, the branch input terminal section 6a for the first phase is located on the branch front surface section 60 side, and the branch input terminal section 6a for the second phase is located on the branch rear surface section 61 side. Therefore, an opening is formed in the branch side surface section 63 located on the other side z2 in the vertical direction z as the branch input terminal section 6a, and the breaker connection section 7 (specifically, the branch connection section 72), which will be described later, can be inserted through this opening in the vertical direction z.

[0079] The branch output terminal section 6b in this embodiment is configured as a so-called quick-connect terminal. The branch output terminal section 6b is provided on the branch lateral side section 63, which is located on one side z1 in the vertical direction z. The branch output terminal section 6b in this embodiment includes a branch output terminal section 6b for the first phase and a branch output terminal section 6b for the second phase. In this embodiment, the branch output terminal section 6b is configured as an electrical output terminal section of the electrical equipment 4. Therefore, the branch lateral side section 63, which is located on one side z1 in the vertical direction z, has an opening formed toward one side z1 in the vertical direction z as the branch output terminal section 6b, and the load conductor C can be inserted in the vertical direction z through this opening.

[0080] The branch handle 6c switches between electrical conduction and deconduction when operated. In this embodiment, the branch handle 6c is provided on the front of the branch 60. The branch handle 6c in this embodiment is configured to be operable in the vertical direction z. Specifically, the branch handle 6c is configured to rotate in the vertical direction z.

[0081] The branch breaker 6 is installed in the housing body 22. In this embodiment, the branch front section 60 is positioned at the front, the branch rear section 61 is positioned at the rear, the branch output terminal section 6b is positioned on one side Z1 of the second direction Z, and the branch input terminal section 6a is positioned on the other side Z2 of the second direction Z. Thus, the branch breaker 6 is installed in the housing body 22 with the horizontal direction y, vertical direction z, and height direction x aligned with the first direction Y, the second direction Z, and the front-to-back direction X, respectively. Therefore, the branch input terminal section 6a is positioned toward the other side Z2 of the second direction Z, and the branch output terminal section 6b is positioned toward one side Z1 of the second direction Z. Here, the length of the vertical direction z of the branch breaker 6 in this embodiment is shorter than the distance between the pair of branch positioning sections 225, 225. Therefore, the branch breaker 6 can be positioned between the pair of branch positioning sections 225, 225 which are spaced apart. Specifically, the branch breaker 6 is installed in the housing body 22 with a pair of branch lateral side sections 63, 63 in contact with a pair of branch positioning sections 225, 225. Therefore, when installed in the housing body 22, the branch breaker 6 is positioned in the second direction Z on one side Z1 of the main breaker 5 and on the other side Z2 of the load conductor insertion section 233. Here, the branch positioning section 225 positioned on one side Z1 of the second direction Z defines one side Z2 of the load conductor insertion section 233 on the other side Z2 of the second direction Z. Therefore, by bringing the branch lateral side section 63 into contact with the branch positioning section 225 on one side Z1 of the second direction Z, the branch output terminal section 6b provided on the branch lateral side section 63 is positioned toward the load conductor insertion section 233. In addition, in this embodiment, multiple (specifically, two) branch breakers 6 are installed in the housing body 22 in a line in the first direction Y. Specifically, the length of the multiple branch breakers 6 aligned in the first direction Y is approximately the same as the length of the load conductor insertion section 233 in the first direction Y. Furthermore, of the multiple branch breakers 6 aligned in the first direction Y, almost the entire area in the first direction Y is positioned between the two sides of the load conductor insertion section 233 in the first direction Y. As a result, the branch output terminals 6b of the multiple branch breakers 6 are positioned close to the load conductor insertion section 233, making it easy to connect the load conductor C to the branch output terminals 6b.

[0082] When the branch breaker 6 is installed in the housing unit 22, the branch input terminal 6a is positioned facing the main breaker 5. Also, as shown in Figure 6, the branch input terminal 6a for the first phase is positioned in approximately the same location as the main output terminal 5b for the first phase in the front-to-back direction X. Furthermore, the branch input terminal 6a for the second phase is positioned in approximately the same location as the main output terminal 5b for the second phase in the front-to-back direction X.

[0083] The circuit breaker connection section 7 electrically connects the main output terminal section 5b and the branch input terminal section 6a. In this embodiment, the circuit breaker connection section 7 is made of a conductive plate-shaped member (specifically, a copper plate). In this embodiment, there is also a circuit breaker connection section 7 for the first phase and a circuit breaker connection section 7 for the second phase. The circuit breaker connection section 7 comprises a connection body section 70, a main connection section 71 connected to the main output terminal section 5b, and a branch connection section 72 connected to the branch input terminal section 6a.

[0084] The main connection section 70 connects the main connection section 71 and the branch connection section 72. The main connection section 70 comprises a vertical connection section 700 extending in the vertical direction z, and a horizontal connection section 701 connected to the vertical connection section 700 and extending in one direction y1 in the horizontal direction y.

[0085] In this embodiment, the main connection section 71 is configured as a so-called "insert type" terminal section, which is fixed by inserting a screw. The main connection section 71 extends from the connection vertical section 700 to one side y1 in the horizontal direction y. In this embodiment, the branch connection section 72 is configured as a so-called "plug-in terminal," which is electrically connected to the branch breaker 6 by being inserted into the branch input terminal section 6a. The branch connection section 72 extends from the connection horizontal section 701 to one side z1 in the vertical direction z. In this embodiment, multiple branch connection sections 72 are arranged spaced apart in the horizontal direction y.

[0086] In this embodiment, the breaker connection section 7 is installed in the housing body section 22 after the main breaker 5. When installing the breaker connection section 7 in the housing body section 22, the horizontal connection section 701 is supported by the connection support section 240 with the horizontal direction y aligned with the first direction Y, and the vertical connection section 700 is positioned to extend from the horizontal connection section 701 to the other side Z2 of the second direction Z, and the main connection section 71 is connected to the main output terminal section 5b. Here, the vertical connection section 700 extends in the second direction Z on the other side Y2 of the main breaker 5 and branch breaker 6 in the first direction Y, and the horizontal connection section 701 extends from the vertical connection section 700 to one side Y1 of the first direction Y between the main breaker 5 and branch breaker 6. Therefore, the main connection body section 70 extends from the main output terminal section 5b to one side Z1 of the second direction Z, and extends in the first direction Y between the main breaker 5 and branch breaker 6. Furthermore, in this embodiment, the breaker connection section 7 is installed in the housing body 22 in front of the branch breaker 6. Therefore, after the breaker connection section 7 is installed in the housing body 22, the branch breaker 6 is installed in the housing body 22, and the branch connection section 72 is connected to the branch input terminal section 6a. Thus, the main output terminal section 5b and the branch input terminal section 6a are electrically connected. In this way, in this embodiment, the main breaker 5 and the branch breaker 6 are electrically connected by the breaker connection section 7. Also, in this embodiment, the branch input terminal sections 6a of multiple branch breakers 6 are connected to the branch connection section 72, so that the branch input terminal section 6a of each branch breaker 6 is electrically connected to the main output terminal section 5b. Note that in this embodiment, the breaker connection section 7 for the first phase is located on the front side, and the breaker connection section 7 for the second phase is located on the rear side.

[0087] Therefore, in this embodiment, the electrical equipment 4 is positioned in the second direction Z on one side Z1 of the changeover switch 3 and the power conductor insertion section 231, and on the other side Z2 of the load conductor insertion section 233.

[0088] The conductive connection section 8 is for electrically connecting the changeover switch 3 and the electrical equipment 4 within the housing 2. In this embodiment, the conductive connection section 8 is made of a conductive plate-shaped member (specifically, a copper plate). In this embodiment, there is a conductive connection section 8 for the first phase and a conductive connection section 8 for the second phase. The conductive connection section 8 comprises a conductive body section 80, a changeover conductive section 81 connected to the load-side terminal section 3c, and a main conductive section 82 connected to the main input terminal section 5a. In this embodiment, the conductive body section 80 differs in shape between the conductive connection section 8 for the first phase and the conductive connection section 8 for the second phase.

[0089] As shown in Figure 5, in the conductive connection section 8 for the first phase, the conductive body section 80 of this embodiment is configured in a stepped shape (specifically, a three-tiered shape) where it is positioned on one side x1 (upper side) in the height direction x as it moves toward one side z1 in the vertical direction z. In contrast, the conductive body section 80 in the conductive connection section 8 for the second phase is configured in a flat plate shape. The switching conductive section 81 and the main conductive section 82 are terminal sections of the so-called "insertion type" which are fixed by inserting screws. As shown in Figure 3, the switching conductive section 81 and the main conductive section 82 extend from the conductive body section 80 toward the other side y2 in the horizontal direction y.

[0090] The conductive connection section 8 is installed in the housing body 22 after the changeover switch 3 and the main breaker 5. In the conductive connection section 8 for the first phase, the switching conductive section 81 is connected to the load-side terminal section 3c for the first phase, and the main conductive section 82 is connected to the main input terminal section 5a for the first phase. Similarly, in the conductive connection section 8 for the second phase, the switching conductive section 81 is connected to the load-side terminal section 3c for the second phase, and the main conductive section 82 is connected to the main input terminal section 5a for the second phase. Furthermore, this conductive body 80 is positioned to extend in the second direction Z on one side Y1 of the first direction Y from the changeover switch 3 and the electrical equipment 4. Thus, the load-side terminal section 3c and the main input terminal section 5a are electrically connected. In this way, the conductive connection section 8 enables the changeover switch 3 and the electrical equipment 4 to be electrically connected. In this embodiment, in the front-to-back direction X, the conductive connection section 8 for the first phase is positioned in front of the conductive connection section 8 for the second phase.

[0091] The cover portion 9 covers the breaker connection portion 7 and the conductive connection portion 8 from the front in the changeover switch 3. The cover portion 9 is made of a plate-shaped member. As shown in Figure 2, the cover portion 9 of this embodiment includes a connection cover portion 90 that covers the main output terminal portion 5b and the breaker connection portion 7, and a conductive cover portion 91 that covers the load side terminal portion 3c, the main input terminal portion 5a and the conductive connection portion 8.

[0092] The connection cover portion 90 in this embodiment is composed of a substantially L-shaped flat plate member. The connection cover portion 90 in this embodiment is placed on the connection support portion 240, thereby covering the main output terminal portion 5b and the breaker connection portion 7 from the front.

[0093] The conductive cover portion 91 comprises a conductive cover main body portion 910 and a cover mounting portion 914 used to attach the conductive cover portion 91 to the housing body. In this embodiment, the conductive cover main body portion 910 comprises a load-side cover portion 911 that covers the load-side terminal portion 3c and the conductive connection portion 8, a main-side cover portion 912 that covers the main-side input terminal portion 5a and the conductive connection portion 8, and a cover connecting portion 913 that covers the load-side cover portion 911 and the main-side terminal portion.

[0094] The main circuit breaker cover portion 912 is configured as a flat plate extending in the vertical direction z and the horizontal direction y. The length of the main circuit breaker cover portion 912 in the vertical direction z is longer than the length of the main circuit breaker 5 in the vertical direction z. As shown in Figure 5, the length of the main circuit breaker cover portion 912 in the horizontal direction y is set to be sufficient to cover the main input terminal portion 5a and the conductive connection portion 8. The main circuit breaker cover portion 912 is positioned on one side z1 in the vertical direction z than the load-side cover portion 911.

[0095] The load-side cover portion 911 is configured as a flat plate extending in the vertical z direction and the horizontal y direction. The length of the load-side cover portion 911 in the vertical z direction is longer than the length of the changeover switch 3 in the vertical z direction. In the horizontal y direction, the load-side cover portion 911 is set to a length that can cover the load-side terminal portion 3c and the conductive connection portion 8. The load-side cover portion 911 is positioned on the other side z2 in the vertical z direction than the main-side cover portion 912. In addition, the load-side cover portion 911 in this embodiment is positioned on the other side x2 (lower side) in the height direction x than the main-side cover portion 912.

[0096] The cover connecting portion 913 extends in the horizontal direction y and the height direction x. The cover connecting portion 913 connects the load-side cover portion 911 and the main-side cover portion 912 in the height direction x. In this embodiment, the cover connecting portion 913 is connected to one end of the load-side cover portion 911 in the vertical direction z and to the other end of the main-side cover portion 912 in the vertical direction z.

[0097] The cover mounting portion 914 extends in the horizontal direction y and the height direction x. In this embodiment, a pair of cover mounting portions 914, 914 are arranged on both sides of the conductive cover body portion 910. Furthermore, the pair of cover mounting portions 914, 914 are arranged to face each other in the vertical direction z. The cover mounting portion 914 located on one side z1 in the vertical direction z has a length in the height direction x that is longer than the distance from the main rear portion 51 of the main breaker 5 to one of the main base portions 501. This cover mounting portion 914 is connected to one end of the main side cover portion 912 in the vertical direction z. The cover mounting portion 914 located on the other side z2 in the vertical direction z has a length in the height direction x that is longer than the distance from the rear portion 31 of the changeover switch 3 to the rear base portion 302. Furthermore, this cover mounting portion 914 is connected to the other end of the load side cover portion 911 in the vertical direction z.

[0098] The conductive cover section 91 is installed in the housing body section 22 after the changeover switch 3, the main breaker 5, and the conductive connection section 8. When installing the conductive cover section 91 in the housing body section 22, the conductive cover body section 910 is positioned in front of the changeover switch 3 and the main breaker 5, with the load-side cover section 911 covering the load-side terminal section 3c and the conductive connection section 8, and the main-side cover section 912 covering the main input terminal section 5a and the conductive connection section 8. Then, a pair of cover mounting sections 914, 914 are positioned opposite each other in the second direction Z so as to cover the conductive connection section 8 from one side Z1 and the other side Z2 in the second direction Z.

[0099] Therefore, when the conductive cover portion 91 is installed in the housing body portion 22, the main circuit side cover portion 912 is positioned at the front, the load side cover portion 911 is positioned at the rear, and the cover connecting portion 913 extends in the front-rear direction X. Specifically, the load side cover portion 911 is positioned in front of the load side terminal portion 3c and behind the second side terminal portion 3b. In addition, the cover mounting portion 914 covers the conductive connection portion 8 from one side Z1 and the other side Z2 in the second direction Z. Furthermore, the load side cover portion 911 is positioned behind the second side terminal portion 3b.

[0100] As described above, according to this embodiment, the space between the side wall 3A and the intermediate wall 3B is open toward one side y1 in the lateral direction y, and the first conductor A can be inserted through this opening and connected to the first terminal 3a. Furthermore, the space between the side wall 3A and the intermediate wall 3B is open toward the other side y2 in the lateral direction y, and the second conductor B can be inserted through this opening and connected to the second terminal 3b. Therefore, when wiring the first conductor A and the second conductor B inserted into the housing 2 via the power conductor insertion section 231, the first conductor A can be wired toward one side Y1 of the first direction Y, which is the other direction of the two directions Z (first direction Y and second direction Z), and the second conductor B can be wired toward the other side Y2 of the first direction Y, which is the other direction, thereby suppressing wiring errors by the worker. Specifically, the first conductor A can be connected from one side Y1 of the first direction Y to the first terminal 3a, and the second conductor B can be connected from the other side Y2 of the first direction Y to the second terminal 3b. Furthermore, by separating the first conductor A to one side Y1 of the first direction Y and the second conductor B to the other side Y2 of the first direction Y, interference between the wires can be prevented.

[0101] Furthermore, in this embodiment, when the changeover switch 3 is installed in the housing body 22, the changeover switch 3 is positioned on one side Z1 of the power conductor insertion portion 231 in the second direction Z, which is one of the two directions Z, the first direction Y. Therefore, for example, when performing wiring work on a changeover switch built into a panel 1 mounted on a wall, the changeover switch 3 can be prevented from obstructing the insertion of the first conductor A and the second conductor B into the housing 2 via the power conductor insertion portion 231, allowing for smooth wiring work.

[0102] Furthermore, in this embodiment, the electrical equipment 4 is positioned in the second direction Z on one side Z1 of the changeover switch 3 and the power conductor insertion section 231, and on the other side Z2 of the load conductor insertion section 233. Therefore, the electrical equipment 4 can be prevented from obstructing the insertion of the first conductor A and the second conductor B into the power conductor insertion section 231 and the insertion of the load conductor C into the load conductor insertion section 233.

[0103] Specifically, in this embodiment, the load conductor insertion section 233 is positioned on one side Z1 of the second direction Z relative to the positioning structure. Here, the branch breaker 6 of the electrical equipment 4 is positioned on the other side Z2 of the second direction Z relative to the load conductor insertion section 233 by contacting the branch positioning section 225 of the positioning structure within the housing 2. Therefore, the load conductor insertion section 233 is positioned on one side Z1 of the electrical equipment 4 in the second direction Z. Consequently, when inserting the load conductor C into the housing 2 via the load conductor insertion section 233, the electrical equipment 4 can be prevented from obstructing the insertion of the load conductor C, allowing for smooth wiring work.

[0104] Furthermore, the power conductor insertion section 231 of this embodiment includes one inclined section 232 that slopes toward the one side y1 of the horizontal direction y as it progresses from one side z1 of the vertical direction z to the other side z2. The first side terminal section 3a includes first side terminal sections 3a for the first phase and for the second phase. Therefore, for example, when wiring so that the first conductor A for the first phase and the first conductor A for the second phase are in contact with one inclined section 232, the first conductor A for the first phase and the first conductor A for the second phase can be separated in the first direction Y, thereby preventing interference between the first conductor A for the first phase and the first conductor A for the second phase. Note that the power conductor insertion section 231 of this embodiment also includes the other inclined section 232, so the same applies to the second conductor B.

[0105] Furthermore, in this embodiment, the front section 30 comprises two front base sections 301 and a rear base section 302, with the rear base section 302 positioned on the rear side 31 side of the two front base sections 301 in the height direction x. The first terminal section 3a is located on one of the front base sections 301, the second terminal section 3b is located on the other front base section 301, and the load-side terminal section 3c is located on the rear base section 302. Therefore, in the front-to-back direction X, the load-side terminal section 3c is positioned behind the first terminal section 3a and the second terminal section 3b. Thus, for example, when a worker performs wiring work connecting the first terminal section 3a to the first conductor A and the second terminal section 3b to the second conductor B, the load-side terminal section 3c is prevented from interfering with the connection, making the connection work easier.

[0106] Furthermore, in this embodiment, the changeover switch 3 is positioned on one side Z1 of the power conductor insertion section 231 in the second direction Z, and the electrical equipment 4, which is positioned on the load side of the changeover switch 3 in the circuit, is positioned on one side Z1 of the changeover switch 3 and on the other side Z2 of the load conductor insertion section 233. Therefore, the equipment and wiring inside the changeover switch enclosure 1 are configured so that electricity flows from the other side Z2 to the one side Z1 in the second direction Z, making it easy to understand the flow of electricity.

[0107] Furthermore, the housing body 22 of this embodiment has a conductor insertion section 230. Therefore, since wiring can be done from the rear side in the front-to-back direction X, for example, when the housing body 22 is installed on a wall, the conductors passed through the wall can be routed from the rear side, and the conductors can be hidden, thus improving the appearance of the changeover switch built-in panel 1.

[0108] Furthermore, in this embodiment, the first terminal portion 3a is located on one side Y1 in the first direction Y, and the second terminal portion 3b is located on the other side Y2 in the first direction Y, relative to the first terminal portion 3a. Therefore, when the first conductor A and the second conductor B are inserted into the housing 2, the first conductor A must be wired to one side Y1 in the first direction Y, and the second conductor B must be wired to the other side Z2 in the second direction Z, thus allowing for neat wiring within the housing 2.

[0109] Furthermore, in this embodiment, the electrical equipment 4 is housed within the enclosure 2 and positioned on one side Z1 of the changeover switch 3 in the second direction Z. The changeover switch 3 has a load-side terminal section 3c that can be electrically connected to a load, and the electrical equipment 4 has an electrical input terminal section, with the load-side terminal section 3c and the electrical input terminal section being electrically connected. Therefore, in the circuit, the electrical equipment 4 can be positioned on the load side of the changeover switch 3. Specifically, the electrical equipment 4 includes a main circuit breaker 5, and the main input terminal section 5a of the main circuit breaker 5 and the load-side terminal section 3c are electrically connected via a conductive connection section 8. Thus, in the circuit, the main circuit breaker 5 can be positioned on the load side of the changeover switch 3, and for example, if an overcurrent flows through the circuit, the main circuit breaker 5 can protect the equipment on the load side by cutting the circuit. In addition, in this embodiment, since a branch circuit breaker 6 is positioned on the load side of the main circuit breaker 5, the equipment on the load side can also be protected by the branch circuit breaker 6.

[0110] Furthermore, in this embodiment, the main input terminal section 5a is located on one side Y1 in the first direction Y, and the load-side terminal section 3c is located on one side Y1 in the first direction Y. Therefore, since the main input terminal section 5a and the load-side terminal section 3c are located on one side Y1 in the first direction Y, they are easy to connect.

[0111] Furthermore, in this embodiment, the load-side terminal portion 3c is positioned one side Y1 of the first-side terminal portion 3a in the first direction Y. Therefore, for example, an operator can check both the first-side terminal portion 3a and the load-side terminal portion 3c together from the front side in the front-rear direction X.

[0112] Furthermore, in this embodiment, the device includes a conductive connection section 8 that connects the load-side terminal section 3c and the main input terminal section 5a, and a conductive cover section 91 that covers the conductive connection section 8 from the front in the front-rear direction X. The conductive cover section 91 includes a load-side cover section 911 that is positioned behind the second-side terminal section 3b. Therefore, when an operator connects the first conductor A to the first-side terminal section 3a, the conductive connection section 8 can be prevented from interfering with the connection work, and the operator can be prevented from touching the conductive connection section 8 and receiving an electric shock.

[0113] Furthermore, in this embodiment, the main input terminal section 5a is located on one side Y1 in the first direction Y and is configured to be electrically connectable to the load side terminal section 3c from one side Y1 in the first direction Y, and the main output terminal section 5b is located on the other side Y2 in the first direction Y and is configured to be electrically connectable to the branch input terminal section 6a from the other side Y2 in the first direction Y. Therefore, in the first direction Y, the connection between the load side terminal section 3c and the main input terminal section 5a and the connection between the main output terminal section 5b and the branch input section can be separated, preventing interference between them.

[0114] Furthermore, in this embodiment, the branch input terminal section 6a is located on the other side Z2 of the second direction Z. Therefore, in the second direction Z, the branch input terminal section 6a is located toward the main breaker 5. Thus, the main output terminal section 5b and the branch input terminal section 6a can be located close together.

[0115] Furthermore, in this embodiment, in the second direction Z, a load conductor insertion portion 233 is formed on one side Z1 of the branch breaker 6 through which a load conductor C electrically connected to the load is inserted. The branch breaker 6 is equipped with a branch output terminal portion 6b that can be electrically connected to the load conductor C. The branch output terminal portion 6b is located on one side Z1 of the second direction Z than the branch input terminal portion 6a, and is configured so that the load conductor C can be connected from one side Z1 of the second direction Z. Therefore, it is easy to connect the load conductor C to the branch output terminal portion 6b.

[0116] Furthermore, in this embodiment, multiple branch breakers 6 are provided, and the branch input terminal 6a of each branch breaker 6 is electrically connected to the main output terminal 5b. Therefore, in the circuit, the load side of the main breaker 5 can be configured to branch, allowing electricity to flow to multiple load-side devices.

[0117] Furthermore, in this embodiment, the changeover switch 3 is equipped with a changeover handle 3d on the front side in the front-to-back direction X for switching the power supply to the first power supply system or the second power supply system, and the main breaker 5 is equipped with a main handle 5c on the front side in the front-to-back direction X for switching the conduction and deconduction of electricity, and the changeover handle 3d and the main handle 5c are configured to be operable in the first direction Y. Therefore, since the direction in which the changeover handle 3d and the main handle 5c can be operated is the same, the appearance of the changeover switch built-in panel 1 can be improved.

[0118] Furthermore, in this embodiment, the branch breaker 6 is equipped with a branch handle 6c on the front side in the front-rear direction X for switching between electrical conduction and deconduction, and the branch handle 6c is configured to be operable in the second direction Z. Therefore, the operable direction of the branch handle 6c can be different from the operable direction of the switching handle 3d and the main handle 5c, thereby suppressing errors in selecting the handle to operate.

[0119] Furthermore, in this embodiment, the main input terminal section 5a includes a main input terminal section 5a for the first phase, and the first side terminal section 3a and the main input terminal section 5a for the first phase are arranged at substantially the same position in the front-to-back direction X. Therefore, the arrangement of the terminals can be made neat, and the appearance can be improved.

[0120] Furthermore, in this embodiment, the main input terminal section 5a includes a main input terminal section 5a for the second phase, and the load-side terminal section 3c and the main input terminal section 5a for the second phase are arranged at substantially the same position in the front-to-back direction X. Therefore, the arrangement of the terminals can be made neat, improving the appearance. In particular, in this embodiment, since the main input terminal section 5a for the second phase and the load-side terminal section 3c for the second phase are arranged at substantially the same position in the front-to-back direction X, electrical connection by the conductive connection section 8 is made easier.

[0121] Furthermore, in this embodiment, the main output terminal section 5b includes a main output terminal section 5b for the first phase and a main output terminal section 5b for the second phase, and the branch input terminal section 6a includes a branch input terminal section 6a for the first phase and a branch input terminal section 6a for the second phase. The main output terminal section 5b for the first phase and the branch input terminal section 6a for the first phase are arranged at approximately the same position in the front-to-back direction X, and the main output terminal section 5b for the second phase and the branch input terminal section 6a for the second phase are arranged at approximately the same position in the front-to-back direction X. Therefore, it is easy to connect each main output terminal section 5b and each branch input terminal section 6a using the breaker connection section 7 for the first phase and the breaker connection section 7 for the second phase in the front-to-back direction X.

[0122] Furthermore, in this embodiment, since the conductive cover body 910 covers the load-side terminal 3c, the main input terminal 5a, and the conductive connection 8 from the front, the appearance inside the housing 2 can be improved, and it is possible to prevent workers from touching the load-side terminal 3c, the main input terminal 5a, and the conductive connection 8 and receiving an electric shock. The same applies to the connection cover 90.

[0123] Furthermore, in this embodiment, the cover connecting portion 913 connects the load-side cover portion 911 and the main-side cover portion 912 in the front-rear direction X. Therefore, it is possible to prevent workers from being electrocuted by contacting the conductive main body portion 80 for the first phase from the other side Z2 of the second direction Z. In addition, since the cover mounting portion 914 covers the conductive connection portion 8 from one side Z1 and the other side Z2 of the second direction Z, it is possible to prevent workers performing wiring work from being electrocuted by contacting the conductive connection portion 8 from one side Z1 and the other side Z2 of the second direction Z.

[0124] Furthermore, in this embodiment, when the changeover switch 3 is installed in the housing body 22, the changeover handle 3d is located at one side Z1 of the second direction Z, approximately from the center of the first direction Y of the power conductor insertion section 231. Therefore, because the changeover handle 3d, which can be operated in the first direction Y, is located at one side Z1 of the second direction Z, approximately from the center of the first direction Y of the power conductor insertion section 231, it is easy to separate the first conductor A and the second conductor B in the first direction Y using the changeover handle 3d as a reference when wiring them. Also, using the changeover handle 3d as a reference, it is easier to see one side Y1 and the other side Y2 from approximately the center of the first direction Y of the power conductor insertion section 231.

[0125] It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0126] In the above embodiment, the case where "one direction" is the second direction Z and "the other direction" is the first direction Y was described, but it is not limited to this, and for example, "one direction" may be the first direction Y and "the other direction" may be the second direction Z.

[0127] In the above embodiment, the case was described in which a conductor insertion portion 230 is provided in the housing body portion 22, and the first conductor A, the second conductor B, and the load conductor C are inserted into the housing 2 from the rear. However, the invention is not limited to this, and for example, a conductor insertion portion 230 may be provided in the frame portion 21, and the first conductor A, the second conductor B, and the load conductor C may be inserted into the housing 2 in the second direction Z.

[0128] In the above embodiment, the case in which the housing 2 is a changeover switch 3 that houses the changeover switch 3, electrical equipment 4, conductive connection part 8 and cover part 9 has been described, but it is not limited to this, and for example, the housing 2 may be a changeover switch built-in panel 1 that houses only the changeover switch 3.

[0129] In the above embodiment, the first terminal portion 3a is located on one side Y1 of the power conductor insertion portion 231 in the first direction Y, and the second terminal portion 3b is located on the other side Y2 of the power conductor insertion portion 231 in the first direction Y. However, the embodiment is not limited to this, and it is sufficient if the first terminal portion 3a is located on one side Y1 of the center of the power conductor insertion portion 231 in the first direction Y, and the second terminal portion 3b is located on the other side Y2 of the center of the power conductor insertion portion 231 in the first direction Y.

[0130] In the above embodiment, the case in which the electrical equipment 4 includes a main circuit breaker 5, branch circuit breakers 6, and a circuit breaker connection section 7 has been described. However, it is not limited to this, and for example, the electrical equipment 4 may be configured to include only the main circuit breaker 5 or the branch circuit breaker 6. If the electrical equipment 4 includes only the branch circuit breaker 6, it is conceivable that the branch input terminal section 6a and the load-side terminal section 3c of the branch circuit breaker 6 are electrically connected by a conductive connection section 8. In addition, the electrical equipment 4 may include equipment other than circuit breakers such as the main circuit breaker 5 and the branch circuit breaker 6 (for example, a terminal block).

[0131] In the above embodiment, the case where the changeover switch 3 is a manual changeover switch was described. However, the changeover switch 3 is not limited to a manual changeover switch; it may also be an automatic changeover switch. In this case, the changeover switch 3 does not need to have a changeover handle 3d.

[0132] In the above embodiment, the case in which the first terminal portion 3a is located on one front base portion 301 and the second terminal portion 3b is located on the other front base portion 301 has been described. However, the embodiment is not limited to this, and the first terminal portion 3a may be located on the other front base portion 301 and the second terminal portion 3b may be located on one front base portion 301.

[0133] In the above embodiment, the two front base portions 301 were positioned at approximately the same height in the height direction x. A first terminal portion 3a was positioned on one front base portion 301, and a second terminal portion 3b was positioned on the other front base portion 301. Therefore, the first terminal portion 3a and the second terminal portion 3b were positioned at approximately the same height in the height direction x. However, this is not limited to this configuration; for example, one of the first terminal portion 3a and the second terminal portion 3b may be positioned further forward than the other. In this case, the two front base portions 301 may be positioned at different heights in the height direction x.

[0134] In the above embodiment, the case described was that the load-side terminal portion 3c is located behind the first-side terminal portion 3a and the second-side terminal portion 3b in the front-rear direction X. However, the case is not limited to this, and the load-side terminal portion 3c may be located in front of the first-side terminal portion 3a and the second-side terminal portion 3b, or in substantially the same position as the first-side terminal portion 3a and the second-side terminal portion 3b, in the front-rear direction X.

[0135] In the above embodiment, a two-phase system comprising conductors for the first phase and the second phase and terminals for each phase was described, but the system is not limited to this, and may be a one-phase system or a system with three or more phases.

[0136] In the above embodiment, the main output terminal section 5b was located on the other side Y2 of the first direction Y, and was configured to be connectable to the breaker connection section 7 from the other side Y2 of the first direction Y. However, the embodiment is not limited to this, and for example, the main output terminal section 5b may be located facing the branch input terminal section 6a in the second direction Z.

[0137] In the above embodiment, the case in which the electrical equipment 4 is located on one side Z1 of the changeover switch 3 in the second direction Z has been described. However, the invention is not limited to this, and for example, the electrical equipment 4 may be located at approximately the same position as the changeover switch 3 in the second direction Z. In this case, for example, the electrical input terminal portion may be arranged to face the load side terminal portion 3c. [Explanation of Symbols]

[0138] 1: Changeover switch built-in panel, 2: Housing, 20: Housing section, 21: Frame section, 22: Housing main body section, 220: Changeover position fixing section, 222: Main position fixing section, 223: Main one-way position fixing section, 224: Main other-way position fixing section, 225: Branch position fixing section, 230: Conductor insertion section, 231: Power conductor insertion section, 232: Inclined section, 233: Load conductor insertion section, 240: Connection support section, 241: First isolation section, 242: Second isolation section, 2A: Inner cover section, 2a: Outer cover section, 2b: Outer cover main body section, 2c: Opening, 2d: Outer cover door section, 3: Changeover switch, 30: Positive 300: Front body section, 301: Front base section, 302: Rear base section, 31: Rear section, 32: Vertical side section, 33: Horizontal side section, 3A: Side wall section, 3B: Intermediate wall section, 3X: Terminal cover section, 3a: First side terminal section, 3b: Second side terminal section, 3c: Load side terminal section, 3d: Switching handle, 4: Electrical equipment, 5: Main circuit breaker, 50: Main front section, 500: Main front body section, 501: Main base section, 502: Other main base body section, 503: One main base body section, 51: Main rear section, 52: Main vertical side section, 520: Main mounting section, 5 3: Main breaker side section, 5A: Side wall section, 5B: Intermediate wall section, 5a: Main breaker input terminal section, 5b: Main breaker output terminal section, 5c: Main breaker handle, 6: Branch breaker, 60: Branch front section, 61: Branch rear section, 62: Branch vertical side section, 63: Branch horizontal side section, 6a: Branch input terminal section, 6b: Branch output terminal section, 6c: Branch handle, 7: Breaker connection section, 70: Connection body section, 700: Connection vertical section, 701: Connection horizontal section, 71: Main breaker connection section, 72: Branch connection section, 8: Conductive connection section, 80: Conductive body section, 81: Switching conductive section, 82: Main breaker Conductive part, 9: Cover part, 90: Connection cover part, 91: Conductive cover part, 910: Conductive cover main body part, 911: Load side cover part, 912: Main circuit side cover part, 913: Cover connection part, 914: Cover mounting part, A: First conductor, B: Second conductor, C: Load conductor, X: Front / back direction, Y: First direction, Y1: One side, Y2: Other side, Z: Second direction, Z1: One side, Z2: Other side, x: Height direction, x1: One side, x2: Other side, y: Horizontal direction, y1: One side, y2: Other side, z: Vertical direction, z1: ​​One side, z2: Other side

Claims

1. A changeover switch that switches the power supply system that supplies electricity to a load system to a first power supply system or a second power supply system, comprising a first terminal section electrically connectable to the first power supply system and a second terminal section electrically connectable to the second power supply system, The system comprises a housing for the aforementioned changeover switch, The housing is formed with a power conductor insertion section through which a first conductor for electrically connecting the first terminal section and the first power supply of the first power supply system and a second conductor for electrically connecting the second terminal section and the second power supply of the second power supply system can be inserted. The power conductor insertion portion is positioned on the side of the changeover switch in one of the two directions, which are perpendicular to the front-to-back direction of the housing and perpendicular to each other. The first terminal portion is positioned to one side of the center of the power conductor insertion portion in the other direction of the first and second directions, and is configured to be electrically connectable to the first conductor from one side in the other direction. A control panel with a built-in changeover switch, wherein the second terminal portion is positioned to the other side of the center of the power conductor insertion portion in the other direction, and is configured to be electrically connectable to the second conductor from the other side in the other direction.

2. The main circuit breaker is housed within the aforementioned enclosure and is positioned on one side of the changeover switch in one of the aforementioned directions. The main circuit breaker is equipped with a main input terminal section. The aforementioned changeover switch is equipped with a load-side terminal section that can be electrically connected to the load system, The control panel with a built-in changeover switch according to claim 1, wherein the load-side terminal section and the main input terminal section are electrically connected.

3. The control panel with a built-in changeover switch according to claim 2, wherein the load-side terminal portion is located behind the first-side terminal portion and the second-side terminal portion in the front-to-back direction.

4. The main circuit breaker is equipped with a main output terminal section, The system includes a branch circuit breaker housed within the aforementioned enclosure and positioned on one side of the main circuit breaker in one of the aforementioned directions, The aforementioned branch breaker is equipped with a branch input terminal section, The control panel with a built-in changeover switch according to claim 2 or 3, wherein the main output terminal section and the branch input terminal section are electrically connected.

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