Distribution board

Abstract

To provide a distribution board and a breaker in which a work for leading wires into a master breaker and a branch breaker can be easily performed.SOLUTION: In a distribution board 1, a primary side terminal 13A of a master breaker 3 and a secondary side terminal 14B of a branch breaker 4 are disposed on the same side (negative side) in a Z axis direction, in a front view of a base part 2. In this case, the lead-in wire direction to the primary side terminal 13A of the master breaker 3 is the same as the lead-in wire direction to the secondary side terminal 14B of the branch breaker 4. Accordingly, a worker can easily lead wires into the master breaker 3 and the branch breaker 4 from the same direction. In addition, the branch breaker 4 is disposed on the base part 2 so as to be adjacent to the master breaker 3 in an X axis direction. Thus, if the master breaker 3 and the branch breaker 4 are put to an opposite side (positive side in the Z axis direction) to the lead-in work side on the base part 2, a space for the wire leading work can be easily ensured.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a distribution board and a breaker.

Background Art

[0002] There is known a distribution board in which a main breaker and branch breakers are provided on a base portion (for example, Patent Document 1). In the distribution board, the primary side terminal of the main breaker is connected to the power supply side wiring, and the secondary side terminal of the branch breaker is connected to the load side wiring. The primary side terminal of the main breaker and the secondary side terminal of the branch breaker are provided so as to face different directions.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described distribution board, the primary side terminal of the main breaker and the secondary side terminal of the branch breaker face different directions from each other. Therefore, the wiring to the secondary side terminal of the branch breaker and the wiring to the primary side terminal of the main breaker are performed from different directions. Thus, since the wiring directions to the main breaker and the branch breaker are different, there is a possibility that the wiring work becomes troublesome.

[0005] An object of the present invention is to provide a distribution board and a breaker that can easily perform the wiring work for the main breaker and the branch breaker.

Means for Solving the Problems

[0006] The distribution board according to the present invention includes a base portion, a main breaker provided on the base portion, and a branch breaker provided on the base portion so as to be aligned with the main breaker in a first direction. In a front view of the base portion, a primary side terminal of the main breaker and a secondary side terminal of the branch breaker are arranged on the same side in a second direction orthogonal to the first direction.

[0007] In the distribution board according to the present invention, in a front view of the base portion, a primary side terminal of the main breaker and a secondary side terminal of the branch breaker are arranged on the same side in the second direction. In this case, the wiring to the primary side terminal of the main breaker and the wiring to the secondary side terminal of the branch breaker are performed from the same direction. Therefore, an operator can easily perform the wiring operation for the main breaker and the branch breaker from the same direction. Further, since the branch breaker is provided on the base portion so as to be aligned with the main breaker in the first direction, in the base portion, by moving the main breaker and the branch breaker to the side opposite to the wiring operation side, it becomes easy to secure a space for the wiring operation. As described above, the wiring operation for the main breaker and the branch breaker can be easily performed.

[0008] The base portion is formed with a first opening through which a first wiring connected to the primary side terminal of the main breaker passes from the back side of the base portion, and a second opening through which a second wiring connected to the secondary side terminal of the branch breaker passes from the back side. The first opening and the second opening may be arranged on the same side in the second direction with respect to the main breaker and the branch breaker. In this case, an operator can easily draw out the first wiring and the second wiring of the wall from the first opening and the second opening on the same side in the second direction. Then, the operator can wire the drawn first wiring and second wiring to the main breaker and the branch breaker from the same direction.

[0009] The secondary side terminal of the main breaker may be a plug-in type terminal. In this case, in the base portion, it becomes easy to move the main breaker to the side opposite to the wiring operation side, and it becomes easy to secure a space for the wiring operation.

[0010] The primary side terminals of the branch breaker are plug-in type terminals, and the secondary side terminals of the main breaker and the primary side terminals of the branch breaker may be plug-in connected to the same conductive bar provided on the base portion. In this case, by simply plugging in the main breaker and the branch breaker to the conductive bar, it is possible to easily arrange both of them side by side in the first direction.

[0011] The conductive bar has a strip shape extending in the first direction, and the main surfaces on both sides of the conductive bar may maintain a flat surface from the connection position with the main breaker to the connection position with the branch breaker. By configuring the conductive bar in such a simple manner, the number of parts and costs can be reduced.

[0012] The main breaker and the branch breaker may cover the conductive bar from the front side. In this case, the main breaker and the branch breaker themselves can function as members that cover the exposed portion of the conductor bar.

[0013] In the breaker according to the present invention, the secondary side terminal is a plug-in type terminal and reverse connection is possible.

[0014] According to this breaker, it is possible to make a plug-in connection to the conductive bar to which the primary side terminal of the branch breaker is connected, as the primary side terminal of the main breaker. At this time, the primary side terminal of the main breaker can be easily arranged on the same side as the secondary side terminal of the branch breaker. Thereby, similar to the above-described distribution board, it becomes possible to easily perform the wiring work for the main breaker and the branch breaker.

Effects of the Invention

[0015] According to the present invention, it is possible to provide a distribution board and a breaker that can easily perform the wiring work for the main breaker and the branch breaker.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[0018] FIG. 1 is a perspective view showing a distribution board 1 according to an embodiment of the present invention. FIG. 2 is a developed perspective view showing the distribution board 1 according to an embodiment of the present invention. In FIG. 2, a state in which the main breaker 3 and the branch breaker 4 are separated from the base portion 2 is shown. As shown in FIG. 1, the distribution board 1 includes a base portion 2, a main breaker 3, and a branch breaker 4. Here, in the following description, when explaining the configuration of each component, the XYZ coordinates, which are relative coordinates set for the distribution board 1, may be used. The Y-axis direction is a direction orthogonal to the X-axis direction (the first direction). The Z-axis direction (the second direction) is a direction orthogonal to the X-axis direction and the Y-axis direction. Also, one side of the X-axis direction, the Y-axis direction, and the Z-axis direction is referred to as the "positive side", and the other side is referred to as the "negative side". In the drawing, arrows are indicated from the negative side to the positive side on each axis. Further, when the distribution board 1 is installed on a wall, the X-axis direction is the horizontal direction and is the direction along the wall. The positive side of the Y-axis direction is the horizontal direction and is the direction perpendicular to the wall, the positive side is the front side, and the negative side is the back side (wall side). The Z-axis direction is the vertical direction, the positive side is the upper side, and the negative side of the Z-axis direction is the lower side. However, the posture of the distribution board 1 at the time of installation is not particularly limited, and a posture in which the X-axis direction is the vertical direction may be used.

[0019] The base part 2 constitutes the main body part of the distribution board 1 and is a unit to be attached to the wall to be installed. The base part 2 includes a housing 6, a base plate 7, and a copper bar 8 (conductive bar).

[0020] The housing 6 is a resin member to be attached to the wall with the internal devices of the distribution board 1 such as the breakers 3 and 4 accommodated therein. Although the housing 6 has a cover member, it is omitted in the drawings. The housing 6 extends parallel to the XZ plane and is configured in a rectangular plate shape with the X-axis direction as the longitudinal direction. The mounting surface 6a on the positive side in the Y-axis direction of the housing 6 is the surface on which the above-mentioned base plate 7, copper bar 8, and breakers 3 and 4 are provided. The back surface 6b on the negative side in the Y-axis direction of the housing 6 is the surface to be joined to the wall.

[0021] The base plate 7 is a metal plate-like member for supporting the copper bar 8 and the breakers 3 and 4. The shape of the base plate 7 is not particularly limited, but in this embodiment, it has a shape extending in the X-axis direction. The base plate 7 is attached to the region on the upper end side in the Z-axis direction of the housing 6. Although two base plates 7 are provided side by side in the Z-axis direction with respect to the housing 6 (see FIG. 2 in particular), the number of base plates 7 is not particularly limited.

[0022] The copper bar 8 is a conductive member for electrically connecting the main breaker 3 and the branch breaker 4. Although the copper bar 8 is a copper member, a conductor bar made of other conductive materials may be adopted. The copper bar 8 has a strip shape extending in the X-axis direction in a state of rising in the Y-axis direction. The copper bar 8 has a main surface 8a on the positive side in the Z-axis direction and a main surface 8b on the negative side. The main surfaces 8a and 8b on both sides of the copper bar 8 maintain a flat surface from the connection position CP1 with the main breaker 3 to the connection position CP2 with the branch breaker 4 (see Fig. 2). The state in which the flat surfaces of the main surfaces 8a and 8b are maintained means that the main surfaces 8a and 8b are parallel to the XY plane in all regions between the connection position CP1, the connection position CP2, and the connection positions CP1 and CP2. In the present embodiment, three copper bars 8 are provided on the upper base plate 7 at intervals in the Z-axis direction (see particularly Fig. 2).

[0023] The main breaker 3 is a breaker that detects the current of the building where the distribution board 1 is installed and shuts off the circuit in case of an abnormality. The main breaker 3 is provided at a position on the negative side in the X-axis direction of the base portion 2 and at a position where the base plate 7 is provided on the positive side in the Z-axis direction. The main breaker 3 has a primary terminal 13A on the power supply side and a secondary terminal 13B on the load side.

[0024] The branch breaker 4 is a breaker provided for load equipment branched from the main breaker 3. A plurality of branch breakers 4 are provided in the distribution board 1 in an array in the X-axis direction. The branch breaker 4 is provided at a position closer to the positive side in the X-axis direction of the base portion 2 and at a position where the base plate 7 is provided on the positive side in the Z-axis direction. The branch breaker 4 has a primary terminal 14A on the power supply side and a secondary terminal 14B on the load side. The positional relationship of the terminals 13 and 14 will be described later.

[0025] The secondary-side terminal 13B of the main breaker 3 is a plug-in type terminal. The main breaker 3 can be reversely connected. A plug-in type terminal is a terminal that can be electrically connected by fitting it into the counterpart terminal from a predetermined direction, and can structurally maintain the connection state without accompanying screw tightening or the like. The secondary-side terminal 13B is provided on the back surface on the negative side in the Y-axis direction of the main breaker 3 so as to be connectable to the copper bar 8. In the present embodiment, three copper bars 8 are arranged in the Z-axis direction and extend in the X-axis direction. Therefore, the main breaker 3 has three secondary-side terminals 13B that are arranged in the Z-axis direction and extend in the X-axis direction. The secondary-side terminal 13B is connected to the copper bar 8 by pressing the main breaker 3 against the copper bar 8 from the positive side to the negative side in the Y-axis direction.

[0026] The primary-side terminal 14A of the branch breaker 4 is a plug-in type terminal. The primary-side terminal 14A is provided on the back surface on the negative side in the Y-axis direction of the branch breaker 4 so as to be connectable to the copper bar 8. The primary-side terminal 14A of the branch breaker 4 has the same configuration as the main breaker 3.

[0027] With the configuration as described above, the secondary-side terminal 13B of the main breaker 3 and the primary-side terminal 14A of the branch breaker 4 are plug-in connected to the same copper bar 8 provided on the base portion 2. Thereby, the main breaker 3 and the branch breaker 4 are electrically connected via the same copper bar 8 in a state of being adjacent to each other in the X-axis direction. The copper bar 8 is covered by the main breaker 3 and the branch breaker 4 near the end portion on the positive side in the Y-axis direction. Therefore, when an operator reaches out from the outside, contact with the copper bar 8 is inhibited by the main breaker 3 and the branch breaker 4. Note that the portion of the copper bar 8 that is not covered by the main breaker 3 or the branch breaker 4 may be covered with another covering material.

[0028] The primary-side terminal 13A of the main breaker 3 is provided at the negative-side end of the main breaker 3 in the Z-axis direction. The main breaker 3 has three primary-side terminals 13A that are electrically connected to each of the three secondary-side terminals 13B and the three copper bars 8. The secondary-side terminal 14B of the branch breaker 4 is provided at the negative-side end of the branch breaker 4 in the Z-axis direction. Note that the branch breaker 4 has three secondary-side terminals 14B that are electrically connected to each of the three primary-side terminals 14A and the three copper bars 8.

[0029] Next, the wiring connected to the primary-side terminal 13A of the main breaker 3 and the secondary-side terminal 14B of the branch breaker 4 will be described with reference to Fig. 3(a). As shown in Fig. 3(a), since the primary-side terminal 13A is provided on the negative side of the main breaker 3 in the Z-axis direction, the first wiring L1 connected to the primary-side terminal 13A is arranged on the negative side of the main breaker 3 in the Z-axis direction. The first wiring L1 connected to the primary-side terminal 13A is connected to the primary-side terminal 13A in a state of extending from the negative side to the positive side in the Z-axis direction. That is, the incoming line direction D1 of the first wiring L1 with respect to the primary-side terminal 13A is the Z-axis direction from the negative side to the positive side.

[0030] Since the secondary-side terminal 14B of the branch breaker 4 is provided on the negative side of the branch breaker 4 in the Z-axis direction, the second wiring L2 connected to the secondary-side terminal 14B is arranged on the negative side of the branch breaker 4 in the Z-axis direction. The second wiring L2 connected to the secondary-side terminal 14B is connected to the secondary-side terminal 14B in a state of extending from the negative side to the positive side in the Z-axis direction. That is, the incoming line direction D2 of the second wiring L2 with respect to the secondary-side terminal 14B is the Z-axis direction from the negative side to the positive side.

[0031] With the above configuration, the primary-side terminal 13A of the main breaker 3 and the secondary-side terminal 14B of the branch breaker 4 are arranged on the same side, that is, the negative side, in the Z-axis direction. Also, the incoming line direction D1 of the primary-side terminal 13A of the main breaker 3 and the incoming line direction D2 of the secondary-side terminal 14B of the branch breaker 4 are set in the same direction, that is, the Z-axis direction from the negative side to the positive side.

[0032] Next, with reference to FIGS. 1 and 2, a structure for drawing out wirings L1 and L2 to breakers 3 and 4 via base portion 2 will be described. As shown in FIGS. 1 and 2, a first opening 11 and a second opening 12 are formed in base portion 2. The first opening 11 is a location for allowing a first wiring L1 (see FIG. 3(a)) connected to the primary side terminal 13A of main breaker 3 to pass through from the back surface 6b side of base portion 2. The second opening 12 is a location for allowing a second wiring L2 connected to the secondary side terminal 14B of branch breaker 4 to pass through from the back surface 6b side. Openings 11 and 12 are configured by forming a through portion that penetrates base portion 2 in the Y direction from the mounting surface 6a side to the back surface 6b.

[0033] The first opening 11 is formed in a region on the negative side in the X-axis direction of base portion 2 and in a region on the negative side in the Z-axis direction with respect to main breaker 3. The second opening 12 is formed in a region on the positive side in the X-axis direction of base portion 2 and in a region on the negative side in the Z-axis direction with respect to branch breaker 4. Openings 11 and 12 are configured as rectangular through portions. Also, between openings 11 and 12, a pillar portion 17 is formed to separate the two and divide the first wiring L1 and the second wiring L2. However, the shapes and sizes of openings 11 and 12 are not particularly limited and may be changed as appropriate. Also, openings 11 and 12 do not necessarily have to be separated by pillar portion 17, and openings 11 and 12 may communicate with each other as shown in FIG. 3(a).

[0034] The operation and effects of the distribution board 1 and the main breaker 3 according to this embodiment will be described.

[0035] First, referring to FIG. 3(b), the distribution board 100 according to the comparative example will be described. In the distribution board 100, the primary side terminal 113A of the main breaker 103 is provided on the positive side in the Z-axis direction, and the secondary side terminal 113B is provided on the negative side. The primary side terminal 114A of the branch breaker 104 is provided on the positive side in the Z-axis direction, and the secondary side terminal 114B is provided on the negative side. Further, the secondary side terminal 113B of the main breaker 103 and the primary side terminal 114A of the branch breaker 104 are electrically connected by a copper bar 108. This copper bar 108 has a portion 108a extending on the negative side in the Z-axis direction, a portion 108b extending in the Z-axis direction, and a portion 108c extending on the positive side in the Z-axis direction. The secondary side terminal 113B of the main breaker 103 is connected to the portion 108a extending downward by a screw tightening method.

[0036] In the above-mentioned distribution board 100, the primary side terminal 113A of the main breaker 103 and the secondary side terminal 114B of the branch breaker 104 face different directions. Therefore, the wiring to the secondary side terminal 114B of the branch breaker 104 and the wiring to the primary side terminal 113A of the main breaker 103 are performed from different directions. In this way, since the wiring directions to the main breaker 103 and the branch breaker 104 are different, there is a possibility that the wiring work may be time-consuming. Also, in a structure like the distribution board 100 where the wiring directions are different, it is difficult to provide an opening for drawing the wiring from the wall. When the opening is narrow, it is also necessary to remove the internal unit (units such as breakers, copper bars, and base plates) during the energization work. Alternatively, if the opening is enlarged, there is also a problem that the entire distribution board 100 becomes larger. Further, the copper bar 108 has a complex shape and is arranged over a wide range. In this case, there is a problem that the entire distribution board 100 becomes larger by the width dimensions W1, W2, and W3 of each part 108b. For example, the width dimensions of each part of the copper bar 108 are set to "W1 = 20 mm", "W2 = 40 mm", and "W3 = 20 mm", the height of the distribution board 100 is set to "H = 220 mm", and the length of the distribution board 100 is set to "L = 510 mm". Also, when the copper bar 108 is drilled or the like, the number of parts increases and the cost rises. Further, when the exposed portion of the copper bar 108 exists over a wide range, foreign matters such as dust are likely to adhere.

[0037] On the other hand, as shown in Fig. 3(a), in the distribution board 1 according to the present embodiment, in a front view of the base portion 2, the primary side terminal 13A of the main breaker 3 and the secondary side terminal 14B of the branch breaker 4 are arranged on the same side (negative side) in the Z-axis direction. In this case, the wiring to the primary side terminal 13A of the main breaker 3 and the wiring to the secondary side terminal 14B of the branch breaker 4 are performed from the same direction. Therefore, the operator can easily perform the wiring operation for the main breaker 3 and the branch breaker 4 from the same direction. Further, since the branch breaker 4 is provided on the base portion 2 so as to be aligned with the main breaker 3 in the X-axis direction, in the base portion 2, by moving the main breaker 3 and the branch breaker 4 to the side opposite to the wiring operation side (positive side in the Z-axis direction), it becomes easier to secure the space for the wiring operation. As described above, the wiring operation for the main breaker 3 and the branch breaker 4 can be easily performed.

[0038] The base portion 2 is formed with a first opening 11 for passing a first wiring L1 connected to the primary side terminal 13A of the main breaker 3 from the back surface 6b side of the base portion 2, and a second opening 12 for passing a second wiring L2 connected to the secondary side terminal 14B of the branch breaker 4 from the back surface 6b side. The first opening 11 and the second opening 12 may be arranged on the same side in the Z-axis direction with respect to the main breaker 3 and the branch breaker 4. In this case, the operator can easily draw out the first wiring L1 and the second wiring L2 of the wall from the first opening 11 and the second opening 12 on the same side in the Z-axis direction. Then, the operator can wire the drawn first wiring L1 and second wiring L2 to the main breaker 3 and the branch breaker 4 from the lower side, which is the same direction.

[0039] The secondary side terminal 13B of the main breaker 3 may be a plug-in type terminal. In this case, in the base portion 2, it becomes easier to move the main breaker 3 toward the positive side in the Z-axis direction, which is the side opposite to the wire passing operation side, and it becomes easier to secure the lower space for the wire passing operation. In the present embodiment, since the main breaker 3 and the branch breaker 4 can be plug-in connected to the copper bar 8 on the back side, unlike the copper bar 108 in Fig. 3(b) which requires a space in the Z-axis direction by the amount of "W1" and "W3", it can be moved toward the positive side in the Z-axis direction without being obstructed by the copper bar 8.

[0040] The primary side terminal 14A of the branch breaker 4 is a plug-in type terminal, and the secondary side terminal 13B of the main breaker 3 and the primary side terminal 14A of the branch breaker 4 may be plug-in connected to the same copper bar 8 provided in the base portion 2. In this case, by simply plug-in connecting the main breaker 3 and the branch breaker 4 to the copper bar 8, it is possible to easily arrange both of them side by side in the lateral direction.

[0041] The copper bar 8 has a strip shape extending in the X-axis direction, and the main surfaces 8a and 8b on both sides of the copper bar 8 may maintain a flat surface from the connection position CP1 with the main breaker 3 to the connection position CP2 with the branch breaker 4. By making the copper bar 8 have such a simple configuration, the number of parts and the cost can be reduced.

[0042] The main breaker 3 and the branch breaker 4 may cover the copper bar 8 from the front side. In this case, the main breaker 3 and the branch breaker 4 themselves can function as members that cover the exposed portion of the copper bar 8.

[0043] The main breaker 3 according to this embodiment has a secondary-side terminal 13B that is a plug-in type terminal and can be reversely connected. According to this main breaker 3, it is possible to perform a plug-in connection to the copper bar 8 to which the primary-side terminal 14A of the branch breaker 4 is connected, as the primary-side terminal 13A of the main breaker 3. At this time, the primary-side terminal 13A of the main breaker 3 can be easily arranged on the same side as the secondary-side terminal 14B of the branch breaker 4. Thereby, similar to the above-described distribution board 1, it becomes possible to easily perform the wiring work for the main breaker 3 and the branch breaker 4.

[0044] The distribution board 1 according to this embodiment has a configuration that facilitates the energization operation, and can omit the width dimensions W1, W2, and W3 of the exposed portions of the copper bars 108 in the comparative example, so that the whole can be made into a compact configuration. For example, the height of the distribution board 1 can be set to "H = 200 mm", and the length of the distribution board 100 can be set to "L = 470 mm". Further, since there is no need for hole processing or a complicated structure in the copper bar 8, the number of parts can be reduced and the cost can be reduced. Further, by covering with the main breaker 3 and the branch breaker 4, the exposed portion of the copper bar 8 can be reduced, and foreign matters such as dust can be reduced.

[0045] The present invention is not limited to the above-described embodiments.

[0046] For example, in the above-described embodiment, the secondary terminal 13B of the main breaker 3 and the primary terminal 14A of the branch breaker 4 were provided on the back side of each breaker 3, 4. Instead, as shown in FIG. 4, the secondary terminal 13B of the main breaker 3 and the primary terminal 14A of the branch breaker 4 may be provided at the positive-side end portions of each breaker 3, 4 in the Z-axis direction. In this case, the copper bar 8 is arranged so as to have a main surface parallel to the XZ plane. The secondary terminal 13B of the main breaker 3 and the primary terminal 14A of the branch breaker 4 are plug-connected by being inserted into such a copper bar 8 from the negative side to the positive side in the Z-axis direction. Even in such a configuration, by inserting the main breaker 3 and the branch breaker 4 toward the positive side in the Z-axis direction, it becomes easier to move the entire unit toward the positive side in the Z-axis direction, and it becomes easier to secure a space for wire-passing work. At this time, as shown in FIG. 5, by covering the copper bar 8 with the resin member 50, the exposed portion of the copper bar 8 can be eliminated.

[0047] Note that within the scope not departing from the gist of the present invention, the positional relationship between the main breaker 3 and the branch breaker 4 within the base portion 2 can be appropriately changed.

Explanation of Reference Numerals

[0048] 1... distribution board, 2... base portion, 3... main breaker, 4... branch breaker, 8... copper bar (conductor bar), 11... first opening, 12... second opening, 13A... primary terminal of main breaker, 13B... secondary terminal of main breaker, 14A... primary terminal of branch breaker, 14B... secondary terminal of branch breaker.

Claims

1. A base portion, A main breaker provided on the base portion, A branch breaker provided on the base portion so as to be aligned with the main breaker in a first direction, and In a front view of the base portion, a primary side terminal of the main breaker and a secondary side terminal of the branch breaker are arranged on the same side in a second direction orthogonal to the first direction. On the base portion, A first opening for passing a first wiring connected to the primary side terminal of the main breaker from the back side of the base portion, and A second opening for passing a second wiring connected to the secondary side terminal of the branch breaker from the back side are formed. The first opening and the second opening are arranged on the same side in the second direction with respect to the main breaker and the branch breaker. The base portion includes a base plate that integrally supports the main breaker, the branch breaker, and a conductive bar to which the main breaker and the branch breaker are connected. The first opening and the second opening communicate with each other, a distribution board.

2. A base portion, A main breaker provided on the base portion, A branch breaker provided on the base portion so as to be aligned with the main breaker in a first direction, and In a front view of the base portion, a primary side terminal of the main breaker and a secondary side terminal of the branch breaker are arranged on the same side in a second direction orthogonal to the first direction. The base portion includes a base plate that integrally supports the main breaker, the branch breaker, and a conductive bar to which the main breaker and the branch breaker are connected. A plurality of the conductive bars are provided on the base plate at intervals from each other, a distribution board.

3. On the base portion, A first opening for passing a first wiring connected to the primary side terminal of the main breaker from the back side of the base portion, and A second opening for passing a second wiring connected to the secondary side terminal of the branch breaker from the back side are formed. The first opening and the second opening are arranged on the same side in the second direction with respect to the main breaker and the branch breaker, the distribution board according to claim 2.

4. The secondary side terminal of the main breaker is a plug-in type terminal, the distribution board according to any one of claims 1 to 3.

5. The primary side terminal of the branch breaker is a plug-in type terminal. The secondary side terminal of the main breaker and the primary side terminal of the branch breaker are plug-in connected to the same conductive bar provided on the base portion. The distribution board according to claim 4.

6. The conductive bar has a strip shape extending in the first direction. The main surfaces on both sides of the conductive bar maintain a flat surface from the connection position with the main breaker to the connection position with the branch breaker. The distribution board according to claim 5.

7. The main breaker and the branch breaker cover the conductive bar from the front side. The distribution board according to claim 5 or 6.

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