Wiring device and circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a wiring device and a circuit breaker comprising the wiring device. In the wiring device, the first group wiring hole comprises at least two first wiring holes, the wiring terminals corresponding to the first wiring holes are first-class terminals, each first-class terminal is used for being connected to one end of a first circuit of the switch device in series, the second group wiring hole comprises at least two second wiring holes, the number of the first wiring holes is the same as that of the second wiring holes, and the number of the second wiring holes is the same as that of the first wiring holes. The wiring terminals corresponding to the second wiring holes are second-class terminals, and the second-class terminals are used for being connected to one end of a second circuit of the switching device in series; the wiring device has a shunting effect, and wiring of the wiring device and the circuit breaker is convenient.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a wiring device and a circuit breaker comprising the wiring device. Background Art

[0002] A circuit breaker is a switching device used to disconnect and connect load circuits, and to cut off fault circuits to prevent accidents from expanding, thereby ensuring the safe operation of load circuits.

[0003] Existing circuit breakers, especially 1U circuit breakers, often include a positive and a negative circuit. Each of these circuits is electrically connected to only one outlet terminal. Each outlet terminal corresponds one-to-one with a wiring hole on the circuit breaker housing. Each outlet terminal can only be connected to one wire, and the cross-sectional area of ​​the wire cannot exceed a certain size. If the rated current of the circuit breaker is large (for example, ≥250A), the cross-sectional area of ​​a single wire is too large to pass through the wiring hole corresponding to the outlet terminal. Utility Model Content

[0004] The purpose of the present invention is to overcome at least one defect of the prior art and to provide a wiring device and a circuit breaker including the wiring device. The wiring device has a shunting function and is convenient for wiring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wiring device comprises a wiring seat and a wiring terminal arranged in the wiring seat;

[0007] The wiring seat includes a wiring side wall, which is provided with two groups of wiring holes. The wiring holes are matched with the wiring terminals in a one-to-one manner. The two groups of wiring holes are respectively a group of wiring holes and a group of wiring holes. The group of wiring holes includes at least two first wiring holes. The wiring terminals corresponding to each first wiring hole are Class I terminals. Each Class I terminal is used to be connected in series with one end of the first circuit of the switching device. The group of wiring holes includes at least two second wiring holes. The number of first wiring holes and second wiring holes is the same. The wiring terminals corresponding to each second wiring hole are Class II terminals. Each Class II terminal is used to be connected in series with one end of the second circuit of the switching device.

[0008] Furthermore, the terminal includes a terminal frame and a wire pressing piece, which cooperates with the terminal frame to compress the external conductor inserted into the terminal frame; the terminal side wall is also provided with two groups of operating holes, which are used for external force operation of the wire pressing piece to release the external conductor and cooperate one-to-one with the terminal hole, and the aperture of the operating hole is smaller than the aperture of the terminal hole. The two groups of operating holes are respectively group one operating holes and group two operating holes. Group one operating holes includes at least two first operating holes that cooperate one-to-one with the first terminal hole, and group two operating holes includes at least two second operating holes that cooperate one-to-one with the second terminal hole.

[0009] Furthermore, the wiring holes of group one are offset to one side relative to the wiring holes of group two in direction d3, the first wiring holes of group one are arranged side by side along direction d2, and the second wiring holes of group two are arranged side by side along direction d2; the wiring holes and the corresponding operating holes are arranged side by side along direction d3; the wiring holes and the corresponding wiring terminals are arranged opposite to each other along direction d1, and the operating holes and the corresponding wiring terminals are arranged opposite to each other along direction d1; the directions d1, d2 and d3 are perpendicular to each other.

[0010] Furthermore, the first wiring holes and the second wiring holes are alternately arranged in sequence along the direction d2, a second operation hole is provided between two adjacent first wiring holes, and a first operation hole is provided between two adjacent second wiring holes;

[0011] Alternatively, the group 1 wiring holes and the group 2 wiring holes are arranged in sequence in the direction d2, the group 1 wiring holes and the group 2 operating holes are arranged side by side along the direction d2, and the group 2 wiring holes and the group 1 operating holes are arranged side by side along the direction d2.

[0012] Furthermore, the terminal holder also includes a terminal cavity arranged therein and used to accommodate the terminal terminal. The terminal cavity is matched with the terminal terminal one-to-one. The terminal cavity includes a terminal cavity opening for the terminal terminal to be inserted into the terminal cavity. The terminal cavity opening is arranged at one end of the corresponding terminal cavity in the direction d3. The terminal cavity matched with the first type of terminal is the first cavity, and the terminal cavity matched with the second type of terminal is the second cavity. The terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity are respectively arranged on two side walls of the terminal holder that are opposite to each other along the direction d3.

[0013] Furthermore, the terminal block includes a terminal cavity insertion hole provided on its bottom wall and connected one-to-one with the terminal cavity. The terminal cavity insertion hole is used for inserting the connection plate of the circuit breaker into the corresponding terminal cavity and cooperating with the corresponding terminal.

[0014] Furthermore, the wiring frame includes a wide portion and a narrow portion arranged in sequence along direction d3 and connected to each other, the wiring screw is threadedly connected to the narrow portion, the wide portion is used for inserting an external conductor therein, and the wire pressing piece is a wire pressing block rotatably arranged on the wiring frame, and the wire pressing block is driven by the wiring screw to swing in the wiring frame to compress and release the external conductor inserted into the wide portion; in the direction d2, the size of the wide portion is larger than that of the narrow portion.

[0015] A circuit breaker includes the wiring device described above; the circuit breaker also includes a housing and a first circuit and a second circuit both arranged in the housing, the first circuit including a first connecting plate electrically connected to each of the first type of terminals, and the second circuit including a second connecting plate electrically connected to each of the second type of terminals; the housing and the wiring seat are of an integrated structure or a split structure.

[0016] Furthermore, the first circuit also includes a handle, an operating mechanism and a contact system, each type of terminal is electrically connected to the contact system through a first connecting plate, the contact system includes a moving contact and a static contact used in conjunction with each other, the handle is arranged to slide along direction d1 and is transmission-connected to the moving contact through the operating mechanism to drive the moving contact and the static contact to close and open; the wiring device and the handle are arranged at the same end of the housing in direction d1, and the wiring device and the handle are arranged side by side along direction d3, and direction d1 and direction d3 are perpendicular to each other.

[0017] Furthermore, the shell also includes heat dissipation holes, and heat dissipation holes are provided on a pair of side walls of the shell; the shell also includes guide ribs arranged on its outer surface and used to cooperate with the guide grooves on the shell of the installation position, and the guide ribs extend along the direction in which the circuit breaker is inserted into the installation position.

[0018] The wiring device of the present invention is provided with a plurality of first-class terminals connected in series with one end of a first circuit and a plurality of second-class terminals connected in series with one end of a second circuit. The first circuit can be connected to a plurality of external conductors through the plurality of first-class terminals, and the second circuit can be connected to a plurality of external conductors through the plurality of second-class terminals. This can play a shunting role, can reduce the cross-sectional area of ​​the wire connected to each wiring terminal, and facilitate the connection of the wire to the circuit breaker of the present invention.

[0019] In addition, the wiring seat combines the wiring terminals into a whole, which is conducive to overall installation and disassembly, and improves the assembly efficiency of the switch device.

[0020] In addition, the arrangement of the first wiring hole and the second wiring hole of the wiring device is conducive to reducing the space required for each wiring hole, while reducing the space required for each wiring terminal, which is conducive to reducing the overall specifications and dimensions of the wiring device.

[0021] In addition, the wiring frame includes a wide portion and a narrow portion, which is beneficial for reducing the space occupied by the wiring terminals.

[0022] The circuit breaker of the utility model includes the wiring device, and its wiring is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the switch device of the utility model;

[0024] Figure 2 This is an exploded view of the switch device of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the switch device of the present invention with the housing removed;

[0026] Figure 4 It is a structural diagram of the loop structure of the first circuit and the loop structure of the second circuit of the utility model;

[0027] Figure 5 It is a structural diagram of the shell of the utility model;

[0028] Figure 6 This is an exploded view of the housing of the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the wiring socket of the utility model, wherein the first wiring hole and the second wiring hole adopt the first arrangement mode;

[0030] Figure 8 This is a schematic diagram of an arrangement of the first and second terminal types of the present invention, corresponding to the first arrangement of the first and second wiring holes;

[0031] Figure 9 It is a schematic diagram of the structure of the utility model terminal block under two viewing angles;

[0032] Figure 10 This is a structural diagram of the wiring socket of the utility model, wherein the first wiring hole and the second wiring hole adopt the second arrangement mode;

[0033] Figure 11 This is a schematic diagram of another arrangement of the first and second terminal types of the present invention, corresponding to the second arrangement of the first and second wiring holes.

[0034] Description of Reference Numerals

[0035] Shell 1a, first outer half shell 1-1a, guide rib 1-23a, first socket 1-3a, second socket 1-4a, heat dissipation hole 1-9a, installation port 1-10a;

[0036] Inner shell 2a, first inner half shell 2-1a, second inner half shell 2-2a;

[0037] Handle 1b;

[0038] Wiring device 6b, terminal block 6-1b, terminal block body 6-11b, wiring side wall 6-111b, terminal cavity 6-12b, terminal cavity insertion hole 6-120b, wiring hole 6-13b, first wiring hole 6-131b, second wiring hole 6-132b, operation hole 6-14b, first operation hole 6-141b, second operation hole 6-142b, terminal block retaining wall 6-15b, wiring terminal 6-2b, type I terminal 6-21b, wiring frame 6-211b, wide portion 6-2111b, narrow portion 6-2112b, wire pressing side wall 6-2113b, wide portion side wall 6-2114b, narrow portion side wall 6-2115b, screw mounting wall 6-2116b, wiring screw 6-212b, wire pressing piece 6-213b, type II terminal 6-22b;

[0039] Operating mechanism 7b, front link 7-1b, second rotating shaft 7-2b, rear link 7-3b, first rotating shaft structure 7r, first rotating shaft 7-4b, third link 7-5a, locking component 7-6b, locking spring 7-7b;

[0040] Electric reclosing mechanism 8b;

[0041] Thermal trip mechanism 9b;

[0042] Magnetic tripping mechanism 10b;

[0043] Contact system 11b, moving contact 11-1b, stationary contact 11-2b, stationary contact 11-21b;

[0044] Arc extinguishing mechanism 12b;

[0045] Manganese copper shunt 13b;

[0046] First connecting plate 14b, first connecting main plate 14-1b, first connecting end plate 14-2b;

[0047] First busbar clamp 15b;

[0048] Second connecting plate 1c, second connecting main plate 1-1c, second connecting end plate 1-2c;

[0049] Second busbar clamp 2c. DETAILED DESCRIPTION

[0050] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the switch device of the present invention. The switch device of the present invention is not limited to the description of the following embodiments.

[0051] The utility model discloses a switch device, specifically a circuit breaker. Further, the circuit breaker is a plug-in circuit breaker. Further, the circuit breaker is a 1U circuit breaker.

[0052] like Figure 2-4 The figure shows an embodiment of the switch device of the present invention. The switch device of this embodiment is a single-pole switch device, which includes a housing and a first circuit and a second circuit disposed within the housing. The first circuit is a negative circuit, and the first circuit preferably includes a breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact), that is, the conduction and disconnection of the first circuit can be controlled by controlling the closing and opening of the breakpoint. The second circuit is a positive circuit, and the second circuit is preferably a straight-through circuit. "Straight-through circuit" means that there is no breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact) in the second circuit, and it always remains in a conducting state. Furthermore, in actual use of the switch device of this embodiment, the two ends of the first circuit are used to connect the negative conductor on the power supply side and the negative conductor on the load side, and the two ends of the second circuit are used to connect the positive conductor on the power supply side and the positive conductor on the load side, respectively.

[0053] Furthermore, the length direction, width direction and height direction of the switch device of the present invention are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other; the length direction, width direction and height direction of the shell are respectively the same as direction d1, direction d2 and direction d3.

[0054] Further, such as Figure 1-6 As shown, the housing includes an outer shell 1a, and the first and second circuits are both disposed within the outer shell 1a. The length, width, and height of the outer shell 1a are aligned with directions d1, d2, and d3, respectively. Specifically, the outer shell 1a includes a first outer half shell 1-1a and a second outer half shell 1-2a that are assembled relative to each other along direction d2.

[0055] Further, such as Figure 2-4As shown, the first circuit includes an operating system, a contact system 11b and an arc extinguishing mechanism 12b, the operating system includes a handle 1b and an operating mechanism 7b, the handle 1b is slidably arranged in the housing (specifically, the handle 1b is slidably arranged in the housing 1a) and switches between the handle closing position and the handle opening position by reciprocating sliding, the contact system 11b includes a moving contact 11-1b and a static contact 11-2b used in conjunction with each other, the handle 1b is transmission-connected to the operating mechanism 7b, and the operating mechanism 7b is transmission-connected to the moving contact 11-1b; when the handle 1b slides to the handle closing position, the handle 1b switches to the handle opening position through the operating mechanism 7b. b drives the moving contact 11-1b to the closed position and closes with the static contact 11-2b, i.e., the switch device completes the closing operation, and the operating mechanism 7b and the switch device switch from the open state to the closed state. When the handle 1b slides to the handle-open position, the handle 1b drives the moving contact 11-1b to the disconnected position through the operating mechanism 7b and disconnects from the static contact 11-2b, i.e., the switch device completes the opening operation, and the operating mechanism 7b and the switch device switch from the closed state to the open state. The arc extinguishing mechanism 12b cooperates with the contact system 11b to extinguish the arc generated by the closing and opening of the contact system 11b. The handle 1b is pressed by an external force to slide into the housing 1a and switch to the handle-closed position. The handle 1b is pulled by an external force to slide out of the housing 1a and switch to the handle-open position.

[0056] Further, such as Figure 2-3 As shown, the movable contact 11-1b and the static contact 11-2b are arranged opposite to each other along the direction d2. Furthermore, one end of the movable contact 11-1b is transmission-connected to the operating mechanism 7b and the other end is matched with the static contact 11-2b.

[0057] Further, such as Figure 3As shown, the operating mechanism 7b includes a second rotating shaft 7-2b, a rear connecting rod 7-3b, a first rotating shaft structure 7r and a main reset member. The second rotating shaft 7-2b is rotatably arranged, and the handle 1b is driven by the second rotating shaft 7-2b to drive it to rotate (that is, the handle 1b switches between the handle closing position and the handle opening position by reciprocating sliding to drive the second rotating shaft 7-2b to rotate reciprocally, and the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position). The second rotating shaft 7-2b is driven by the first rotating shaft structure 7r to rotate through the rear connecting rod 7-3b (that is, the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position by reciprocating rotation and drives the first rotating shaft structure 7r to rotate reciprocally through the rear connecting rod 7-3b, and the first rotating shaft structure 7r switches between the first rotating shaft structure closing position and the first rotating shaft structure opening position). The first rotating shaft structure 7r includes a third connecting rod 7-3b that is respectively rotatably arranged and snap-fitted. Rod 7-5b and locking component 7-6b, the first rotating shaft structure 7r is connected to the moving contact 11-1b by transmission, and the main reset member acts on the first rotating shaft structure 7r to make it have a rotational tendency to drive the moving contact 11-1b to move toward the disconnected position, that is, the main reset member acts on the first rotating shaft structure 7r to make it have a tendency to rotate toward the opening position of the first rotating shaft structure. For example, when the handle 1b drives the operating mechanism 7b to open the gate or after the operating mechanism 7b is tripped, the main reset member applies a force to the first rotating shaft structure 7r. The first rotating shaft structure 7r rotates the second rotating shaft 7b toward the opening position, thereby driving the moving contact 11-1b to the disconnected position. When the operating mechanism 7b is normally opening and closing (that is, when the second rotating shaft 7-2b is driven by an external force—the external force comes from the handle 1b or the electric reclosing mechanism 8b mentioned later—to rotate and drive the moving contact 11-1b and the static contact 11-2b to close and open via the first rotating shaft structure 7r), the third connecting rod 7-5b and the locking component 7-6b maintain a snap-fit ​​fit. Furthermore, the operating mechanism 7b also includes a front connecting rod 7-1b, through which the handle 1b is connected to the second rotating shaft 7-2b for transmission, thereby driving the second rotating shaft 7-2b to rotate.Furthermore, the first rotating shaft structure 7r also includes a first rotating shaft 7-4b and a lock spring 7-7b that are rotatably arranged. The first rotating shaft structure 7r is rotatably arranged through the first rotating shaft 7-4b, and the third connecting rod 7-5b and the lock component 7-6b are rotatably arranged on the rotating shaft 7-4b respectively. The second rotating shaft 7-2b is transmission-connected to the third connecting rod 7-5b through the rear connecting rod 7-3b, and the first rotating shaft 7-4b is transmission-connected to the moving contact 11-1b. The main reset member acts on the first rotating shaft 7-4b to enable the first rotating shaft structure 7r to drive the moving contact. The head 11-1b has a rotational tendency to move toward the disconnected position (that is, when the handle 1b drives the operating mechanism 7b to perform the opening operation and after the operating mechanism 7b is tripped, the main reset member applies a force to the first rotating shaft 7-4b, so that the first rotating shaft structure 7r drives the moving contact 11-1b to move toward the disconnected position and disconnects from the static contact 11-2b), and the locking spring 7-7b acts on the locking component 7-6b to make it have a tendency to rotate relative to the first rotating shaft 7-4b and ensure that the locking component 7-6b and the third connecting rod 7-5b are reliably snap-fitted.

[0058] Furthermore, the operating mechanism 7b also includes a second rotating shaft reset member, which acts on the second rotating shaft 7-2b to make it have a rotation tendency to drive the operating mechanism 7b to open the gate, that is, the second rotating shaft reset member acts on the second rotating shaft 7-2b to make it have a tendency to rotate toward the second rotating shaft opening position.

[0059] Further, such as Figure 2-3 As shown, the operating system also includes an electric reclosing mechanism 8b, which is coupled with the handle 1b or the second rotating shaft 7-2b to drive the operating mechanism 7b to open or close the switch. In this embodiment, the electric reclosing mechanism 8b is preferably coupled with the second rotating shaft 7-2b. The electric reclosing mechanism 8b facilitates remote closing and opening of the switch device of the present invention.

[0060] Further, such as Figure 2-4 As shown in 7-11, the switch device also includes a first wiring component and a second wiring component arranged in the shell, and among the first wiring component and the second wiring component, one is an outgoing wiring component and the other is an incoming wiring component; the first wiring component includes a first negative wiring component and a first positive wiring component, and the second wiring component includes a second negative wiring component and a second positive wiring component, and the first negative wiring component and the second negative wiring component are respectively connected in series at both ends of the first circuit (i.e., the negative circuit), that is, the first circuit is connected to the corresponding external circuit through the first negative wiring component and the second negative wiring component, and the first positive wiring component and the second positive wiring component are respectively connected in series at both ends of the second circuit (i.e., the positive circuit / through circuit), and the second circuit is connected to the corresponding external circuit through the first positive wiring component and the second positive wiring component.

[0061] Specifically, the first and second wiring components are respectively arranged at two ends of the housing, the first wiring component is an outgoing wiring component, and the second wiring component is an incoming wiring component. The second wiring component is a plug-in wiring component, such as a busbar clamp.

[0062] Further, such as Figure 2-4 As shown, the first circuit further includes a first connecting plate 14b, a first negative electrode connecting member, the first connecting plate 14b, the contact system 11b, and a second negative electrode connecting member, which are sequentially connected in series. Specifically, the first negative electrode connecting member, the first connecting plate 14b, the movable contact 11-1b, the static contact 11-2b, and the second negative electrode connecting member are sequentially connected in series. Furthermore, the first connecting plate 14b is a metal conductive plate.

[0063] Further, such as Figure 2-4 As shown, the first circuit also includes a manganese copper shunt 13b, which is preferably connected in series between the contact system 11b and the second negative pole wiring device; specifically, the manganese copper shunt 13b is connected in series between the static contact 11-2b and the second negative pole wiring device.

[0064] Further, such as Figure 2-4 As shown, the second circuit further includes a second connecting plate 1c. The first positive electrode wiring component, the second connecting plate 1c, and the second positive electrode wiring component are sequentially connected in series. Furthermore, the second connecting plate 1c is a metal conductive plate, and the second positive electrode wiring component is a second busbar clamp 2c. The second connecting plate 1c and the second busbar clamp 2c are welded or connected via fasteners (e.g., rivets or screws).

[0065] Further, such as Figure 2-3 As shown, the operating system also includes a thermal trip mechanism 9b and / or a magnetic trip mechanism 10b. The thermal trip mechanism 9b and / or the magnetic trip mechanism 10b are used to drive the locking component 7-6b to rotate and release the latching engagement with the third connecting rod 7-5b when an overload fault and / or a short circuit fault occurs in the circuit where the switching device is located (which is also the circuit where the contact system 11b, the moving contact 11-1b, and the static contact 11-2b are located), thereby tripping the operating mechanism 7b.

[0066] Furthermore, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are arranged side by side along direction d1 and on the same side of the operating mechanism 7b, creating a more rational and compact layout and helping to reduce the space occupied by the thermal trip mechanism 9b and the magnetic trip mechanism 10b. Specifically, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are arranged on the same side of the operating mechanism 7b along direction d2.

[0067] Further, such as Figure 1-3As shown in Figures 7-11, the switch device of the present invention also includes a wiring device 6b, which includes a wiring seat 6-1b and a wiring terminal 6-2b arranged in the wiring seat 6-1b; the wiring seat 6-1b includes a wiring side wall 6-111b, and the wiring side wall 6-111b is provided with two groups of wiring holes 6-13b, and the wiring holes 6-13b are matched with the wiring terminals 6-2b one to one, and the two groups of wiring holes 6-13b are respectively a group one wiring hole and a group two wiring hole, and the group one wiring hole includes at least two first wiring holes 6-131b, the connection terminals 6-2b that cooperate with each first connection hole 6-131b are Class I terminals 6-21b, and each Class I terminal 6-21b is used to be connected in series to one end of the first circuit. The second connection hole group includes at least two second connection holes 6-132b, and the number of first connection holes 6-131b and second connection holes 6-132b is the same. The connection terminals 6-2b corresponding to each second connection hole 6-132b are Class II terminals 6-22b, and each Class II terminal 6-22b is used to be connected in series to one end of the second circuit. Furthermore, the at least two Class I terminals 6-21b are used to electrically connect to the first connecting plate 14b, that is, m connection terminals 6-2b are electrically connected to the first connecting plate 14b, where m is a positive integer ≥2; the at least two Class II terminals 6-22b are used to electrically connect to the second connecting plate 1c, that is, m connection terminals 6-2b are electrically connected to the second connecting plate 1c, where m is a positive integer ≥2.

[0068] Specifically, the terminal block 6-2b is a first wiring device; in this embodiment, the first wiring hole group includes two first wiring holes 6-131b, and correspondingly, two first-class wiring terminals 6-21b are provided in the wiring seat 6-1b, which respectively correspond to the two first wiring holes 6-131b; the second wiring hole group includes two second wiring holes 6-132b, and correspondingly, two second-class wiring terminals 6-22b are provided in the wiring seat 6-1b, which respectively correspond to the two second wiring holes 6-132b; the first-class terminal 6-21b is electrically connected to the first connecting plate 14b, and the second-class terminal 6-22b is electrically connected to the second connecting plate 1c.

[0069] The wiring device 6b brings the following benefits: the wiring device 6b is provided with a plurality of first-class terminals 6-21b connected in series with one end of the first circuit and a plurality of second-class terminals 6-22b connected in series with one end of the second circuit. The first circuit can be connected to a plurality of external conductors through the plurality of first-class terminals 6-21b, and the second circuit can be connected to a plurality of external conductors through the plurality of second-class terminals 6-22b, which plays a shunting role and can reduce the cross-sectional area of ​​the wire connected to each wiring terminal, thereby facilitating the connection between the wire and the switch device of this embodiment. Specifically, the current specification of the switch device of this embodiment is 250A. In order to meet the current carrying requirements, if the first circuit and the second circuit are respectively connected to the external conductor through a single wire, Circuit connection, the interface of a single wire is larger, and due to the size limitation of the switching device of this embodiment, if only one Class I terminal 6-21b and one Class II terminal 6-22b are provided, the maximum size of the wiring hole 6-13b allowed to cooperate with each wiring terminal is provided on the shell of the switching device, which cannot accommodate a single wire - that is, a single wire cannot be inserted into the wiring hole 6-13b. The switching device of this embodiment is provided with multiple Class I terminals 6-21b and multiple Class II terminals 6-22b, so the cross-sectional area of ​​the single wire connected to each wiring terminal 6-2b can be reduced by at least half, so that the single wire can pass through the corresponding wiring hole 6-13b and be connected to the corresponding wiring terminal 6-2b.

[0070] Furthermore, the wiring device 6b is also provided in the housing 1a and is located at one end of the housing 1a. The wiring seat 6-1b and the housing 1a are of a separate structure. The wiring seat 6-1b combines the wiring terminals 6-2b into a whole, which is conducive to the overall installation and removal, and improves the assembly efficiency of the switch device. Figure 5 As shown, the housing 1a is provided with a mounting opening 1-10a at one end in the direction d1, and the wiring device 6b is arranged in the mounting opening 1-10a.

[0071] As another embodiment of the wiring socket 6 - 1 b and the housing 1 a , the wiring socket 6 - 1 b and the housing 1 a are an integrated structure. In other words, a part of the structure of the housing 1 a serves as the wiring socket 6 - 1 b .

[0072] Furthermore, the terminal block 6-2b includes a terminal frame 6-211b and a wire pressing piece 6-213b, wherein the wire pressing piece 6-213b cooperates with the terminal frame 6-211b to compress an external conductor inserted into the terminal frame 6-211b, and an external force directly or indirectly operates the wire pressing piece 6-213b to release the external conductor. Furthermore, the terminal block 6-2b also includes a terminal screw 6-212b, which is arranged on the terminal frame 6-211b and cooperates with the wire pressing piece 6-213b to drive the wire pressing piece 6-213b to move to compress and release the external conductor.

[0073] Specifically, the wire pressing member 6-213b is a wire pressing block that is rotatably mounted on the wiring frame 6-211b. The wire pressing block is driven by the wiring screw 6-212b to swing within the wiring frame 6-211b to compress and release the external conductor inserted into the wiring frame 6-211b. Furthermore, the wiring frame 6-211b includes a wide portion 6-2111b and a narrow portion 6-2112b that are sequentially arranged and connected to each other along direction d3. The wiring screw 6-212b is threadedly connected to the narrow portion 6-2112b. The wide portion 6-2111b is used to allow the external conductor to be inserted therein. The wire pressing block is driven by the wiring screw 6-212b to swing within the wiring frame 6-211b to compress and release the external conductor inserted into the wide portion 6-2111b. In the direction d2, the size of the wide portion 6-2111b is larger than the size of the narrow portion 6-2112b. The wide and narrow portion design of the wiring frame helps reduce the space occupied by the terminal. Furthermore, the wiring frame 6-211b includes a wire pressing side wall 6-2113b, a wide portion side wall 6-2114b, a narrow portion side wall 6-2115b and a screw mounting wall 6-2116b, and the wire pressing side wall 6-2113b is used to cooperate with the wire pressing block to press and release the external conductor inserted into the wide portion 6-2111b (specifically, the first connecting end plate 14-2b of the first connecting plate 14b or the second connecting end plate 1-2c of the second connecting plate 1c is inserted into the wiring frame 6-211b of the corresponding terminal 6-2b and is overlapped with the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b, and the external conductor is inserted between the wire pressing block and the first connecting end plate 14-2b or the second connecting end plate 1-2c, and the wire pressing block rotates to press the external conductor against the first connecting end plate 14-2b or the second connecting end plate Plate 1-2c), the two wide side walls 6-2114b are relatively arranged along the direction d2 and are respectively connected to the two ends of the wire pressing side wall 6-2113b by bending, the two narrow side walls 6-2115b are relatively arranged along the direction d2, the two narrow side walls 6-2115b are respectively connected to the two wide side walls 6-2114b and the two narrow side walls 6-2115b are offset between the two wide side walls 6-2114b, the two screw mounting walls 6-2116b are stacked together along the direction d1 and are respectively connected to the two narrow side walls 6-2115b by bending, the wiring screw 6-212b is arranged along the direction d1 and is threadedly connected to the two screw mounting walls 6-2116b, and the wire pressing block includes a wire pressing block shaft, and the two ends of the wire pressing block shaft are respectively rotatably arranged in the wire pressing block shaft grooves of the two narrow side walls 6-2115b.

[0074] As another embodiment of the terminal block 6-2b, the wire pressing member 6-213b is a spring piece with one end being rotatably arranged on the wiring frame 6-211b. When wiring, the wiring screw 6-212b presses the spring piece so that its other end presses the external conductor inserted into the wiring frame 6-211b. When removing the wires, the wiring screw 6-212b avoids the spring piece, and the spring piece automatically resets and releases the external conductor.

[0075] As another embodiment of the terminal block 6-2b, the wire pressing member 6-213b is provided on a wiring spring, one end of which is fixed and the other end is used to press the external conductor inserted into the wiring frame 6-211b; an external force (such as a screwdriver) presses the wiring spring through the operating hole 6-14b to release the external conductor.

[0076] Furthermore, the wiring side wall 6-111b of the wiring seat 6-1b is also provided with two groups of operating holes 6-14b, the operating holes 6-14b are matched one-to-one with the wiring screws 6-212b, the aperture of the operating hole 6-14b is smaller than the aperture of the wiring hole 6-13b, and the two groups of operating holes 6-14b are respectively group one operating holes and group two operating holes. The group one operating holes includes at least two first operating holes 6-141b that are matched one-to-one with the first wiring holes 6-131b, and the group two operating holes includes at least two second operating holes 6-142b that are matched one-to-one with the second wiring holes 6-132.

[0077] Specifically, the wiring side wall 6-111b is provided with two groups of first operating holes 6-141b, which respectively cooperate with the two groups of first wiring holes 6-131b; the wiring side wall 6-111b is provided with two groups of second operating holes 6-142b, which respectively cooperate with the two groups of second wiring holes 6-132b. It should be noted that the operating holes 6-14b and the corresponding wiring holes 6-13b can be two holes provided independently of each other, or two holes connected to each other.

[0078] like Figure 7The figure shows a first arrangement of the first wiring holes 6-131b and the second wiring holes 6-132: the wiring holes in group 1 are offset to one side relative to the wiring holes in group 2 in direction d3, the first wiring holes 6-131b of group 1 are arranged side by side along direction d2, and the second wiring holes 6-132b of group 2 are arranged side by side along direction d2; the wiring holes 6-13b and the corresponding operation holes 6-14b are arranged side by side along direction d3; the wiring holes 6-13b and the corresponding wiring terminals 6-2b are arranged opposite each other along direction d1, and the operation holes 6-14b and the corresponding wiring terminals 6-2b are arranged opposite each other along direction d1. Furthermore, the first wiring holes 6-131b and the second wiring holes 6-132b are arranged alternately in sequence along direction d2, with a second operation hole 6-142b provided between two adjacent first wiring holes 6-131b, and a first operation hole 6-141b provided between two adjacent second wiring holes 6-132b.

[0079] Specifically, such as Figure 7 In the direction shown, on the wiring side wall 6-111b of the wiring seat 6-1b, from right to left, the first wiring hole 6-131b, the second wiring hole 6-132b, the first wiring hole 6-131b, and the second wiring hole 6-132b are arranged in sequence.

[0080] Further, such as Figure 8 As shown, when the first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned arrangement method, the first-class terminals 6-21b and the second-class terminals 6-22b of the wiring device 6b are alternately arranged in sequence along the direction d2, and among the adjacent first-class terminals 6-21b and second-class terminals 6-22b, the wide part 6-2111b of the first-class terminal 6-21b and the narrow part 6-2112b of the second-class terminal 6-22b are arranged side by side along the direction d2, and the narrow part 6-2112b of the first-class terminal 6-21b and the wide part 6-2111b of the second-class terminal 6-22b are arranged side by side along the direction d2.

[0081] like Figure 10 As shown, this is a second arrangement of the first wiring holes 6-131b and the second wiring holes 6-132b. The difference between this arrangement and the above arrangement is that: the group one wiring holes and the group two wiring holes are arranged in sequence in the direction d2, the group one wiring holes are located to one side of the group two wiring holes in the direction d2, the group two wiring holes and the group two operating holes are arranged side by side along the direction d2, and the group two wiring holes and the group one operating holes are arranged side by side along the direction d2.

[0082] Further, such as Figure 11As shown, when the first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned arrangement method, the first-class terminal 6-21b of the wiring device 6b is located on the side of the second-class terminal 6-22b in the direction d2, the wide part 6-2111b of each first-class terminal 6-21b is side by side along the direction d2 and the narrow part 6-2112b is side by side along the direction d2, the wide part 6-2111b of each second-class terminal 6-22b is side by side along the direction d2 and the narrow part 6-2112b is side by side along the direction d2, the wide part 6-2111b of each first-class terminal 6-21b and the narrow part 6-2112b of each second-class terminal 6-22b are side by side along the direction d2, and the narrow part 6-2112b of each first-class terminal 6-21b and the wide part 6-2111b of each second-class terminal 6-22b are side by side along the direction d2.

[0083] The first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned two arrangement methods, which is conducive to reducing the space required for each wiring hole 6-13b, and at the same time reducing the space required for each wiring terminal 6-2b, which is conducive to reducing the overall specifications and dimensions of the wiring device 6b.

[0084] It should be noted that the arrangement of the first wiring hole 6-131b and the second wiring hole 6-132b is not limited to the above two. The two can also adopt the following arrangement: Method 1 - Refer to Figure 7 As shown, this arrangement is similar to Figure 7 The arrangement shown has at least the following differences: from right to left, the second wiring hole 6-132b, the first wiring hole 6-131b, the second wiring hole 6-132b and the first wiring hole 6-131b. Figure 10 As shown, this arrangement is similar to Figure 10 The arrangement shown has at least the following differences: from right to left, the second wiring hole 6-132b, the second wiring hole 6-132b, the first wiring hole 6-131b, and the first wiring hole 6-131b. Method 3: In the direction d2, the two second wiring holes 6-132b are located at both ends, and the two first wiring holes 6-131b are located between the two second wiring holes 6-132b; in the direction d3, the two second wiring holes 6-132b are offset to one side relative to the two first wiring holes 6-131b. Method 4: The difference from Method 3 is that in the direction d2, the two first wiring holes 6-131b are located at both ends, and the two second wiring holes 6-132b are located between the two first wiring holes 6-131b. The first wiring holes 6-131b and the second wiring holes 6-132b can also be arranged in many other ways, which are not listed here one by one.

[0085] Further, such as Figure 7As shown, 4 the terminal block 6-1b also includes a terminal cavity 6-12b arranged therein and used to accommodate the terminal 6-2b, 7 the terminal cavity 6-12b is matched with the terminal 6-2b one-to-one, that is, a terminal 6-2b is arranged in each terminal cavity 6-12b, the terminal cavity 6-12b includes a terminal cavity opening for allowing the terminal 6-2b to be transferred into the terminal cavity 6-12b, the terminal cavity opening is arranged at one end of the corresponding terminal cavity 6-12b in the direction d3, the terminal cavity 6-12b matched with the first type terminal 6-21b is the first cavity, and the terminal cavity 6-12b matched with the second type terminal 6-22b is the second cavity, the terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity are respectively arranged on the two side walls of the terminal block 6-1b that are opposite to each other along the direction d3.

[0086] The layout of the terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity is conducive to improving the insulation gap and creepage distance between the first cavity and the second cavity.

[0087] As another embodiment of the terminal cavity opening, the terminal cavity opening is provided on the bottom wall of the corresponding terminal cavity, and the bottom wall of the terminal cavity refers to the side wall of the terminal cavity opposite to the wiring side wall 6 - 111 b along the direction d1 .

[0088] Further, such as Figure 7 As shown, the terminal cavity 6-12b also includes a terminal cavity insertion hole 6-120b provided on its bottom wall for the corresponding connecting plate (the first connecting plate 14b or the second connecting plate 1c) to be inserted therein and cooperate with the wiring frame 6-211b of the corresponding wiring terminal 6-2b; the first connecting end plate 14-2b of the first connecting plate 14b of the first circuit is inserted therein through the terminal cavity insertion hole 6-120b of the first cavity and cooperates with the wiring frame 6-211b of the first type of terminal 6-21b, and the second connecting end plate 1-2c of the second connecting plate 1c of the second circuit is inserted therein through the terminal cavity insertion hole 6-120b of the second cavity and cooperates with the wiring frame 6-211b of the second type of terminal 6-22b.

[0089] Specifically, the first connecting plate 14b includes a first connecting main board 14-1b and a first connecting end plate 14-2b, the first connecting end plate 14-2b is arranged on one end of the first connecting main board 14-1b and is matched with a type of terminal 6-21b one to one, each first connecting end plate 14-2b is arranged side by side along the direction d2, and each first connecting end plate 14-2b is inserted into the wiring frame 6-211b of the corresponding terminal 6-2b through the corresponding terminal cavity insertion hole 6-120b and is connected to the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b. Stacked together; the second connecting plate 1c includes a second connecting main plate 1-1c and a second connecting end plate 1-2c, the second connecting end plate 1-2c is arranged on one end of the second connecting main plate 1-1c and is one-to-one matched with the second type terminal 6-22b, and each second connecting end plate 1-2c is arranged side by side along the direction d2, and each second connecting end plate 1-2c is inserted into the wiring frame 6-211b of the corresponding wiring terminal 6-2b through the corresponding terminal cavity insertion hole 6-120b and is stacked with the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b.

[0090] Furthermore, the terminal block 6-1b includes a terminal hole 6-13b and a terminal block retaining wall 6-15b arranged thereon. The terminal block retaining wall 6-15b is located between the terminal hole 6-13b and the handle mounting cavity for the handle 1 to be slidably arranged therein in the direction d3. The terminal block retaining wall 6-15b is used for the operator to pull and pull the switch device out of the installation position (such as a cabinet, a distribution cabinet, etc.). In addition, the terminal block retaining wall 6-15b can also separate the external conductor inserted into the terminal hole 6-13b and the handle 1b to prevent the movement of the handle 1b from being hindered by the external conductor. Furthermore, the terminal block 6-1b includes a terminal block body 6-11b and a terminal block retaining wall 6-15b, and the wiring hole 6-13b, the terminal cavity 6-12b, the operating hole 6-14b, and the wiring side wall 6-111b are all arranged on the terminal block body 6-11b, and one end of the terminal block retaining wall 6-15b is connected to the wiring side wall 6-111b.

[0091] Further, such as Figure 1 、 3 -4, the size of the shell 1a in the direction d2 is larger than the size of the shell 1a in the direction d3, that is, the width of the shell 1a is larger than the height of the shell 1a; the second negative wiring component is the first busbar clamp 15b, and the second positive wiring component is the second busbar clamp 2c. The first busbar clamp 15b and the second busbar clamp 2c are arranged relatively spaced apart along the direction d3. The first busbar clamp 15b and the second busbar clamp 2c both include a pair of clamping plates arranged relatively along the direction d3 and used to clamp the external conductor, and each clamping plate extends to both ends of the shell 1a along the direction d2.

[0092] Specifically, the first busbar clamp 15b and the second busbar clamp 2c both have a generally Ω-shaped structure in the projection perpendicular to the direction d2; the housing 1a is provided with a first socket 1-3a that cooperates with the first busbar clamp 15b and a second socket 1-4a that cooperates with the second busbar clamp 2c, and the first socket 1-3a and the second socket 1-4a are arranged side by side and spaced apart along the direction d3.

[0093] The arrangement of the first busbar clamp 15b and the second busbar clamp 2c facilitates increasing their structural dimensions, enabling them to be plugged into larger busbars, increasing their maximum current carrying capacity and thereby increasing the rated current of the switchgear of the present invention. This arrangement of the first busbar clamp 15b and the second busbar clamp 2c can be applied to switchgear with a rated current of 250A or above.

[0094] Further, such as Figure 2-4 As shown, the first connecting plate 14b and the second connecting plate 1c are respectively arranged at the two ends of the interior of the shell 1a along the direction d3, so that more internal space of the shell 1a can be utilized to increase the structural size of the first connecting plate 14b and the second connecting plate 1c, thereby increasing the current carrying capacity of the two.

[0095] Further, such as Figure 2 、 6 As shown, the housing of the switchgear of the present invention further includes an inner housing 2a disposed within an outer housing 1a. The operating mechanism 7b, contact system 11b, thermal trip mechanism 9b, magnetic trip mechanism 10b, and electric reclosing mechanism 8b are all disposed within the inner housing 2a. Furthermore, the inner housing 2a includes a first inner half-shell 2-1a and a second inner half-shell 2-2a that are relatively joined together along direction d3.

[0096] Further, such as Figure 1 、 5 As shown in FIG. 6 , the housing 1 a further includes heat dissipation holes 1 - 9 a , and heat dissipation holes 1 - 9 a are provided on a pair of side walls of the housing 1 a perpendicular to the direction d2 .

[0097] Further, such as Figure 5-6 As shown, the housing 1a also includes a guide rib 1-23a arranged on its outer surface for cooperating with the guide groove on the shell of the installation position of the circuit breaker. The guide rib 1-23a extends along the direction d1. The guide rib 1-23a ensures that the switching device of the present invention is installed in the installation position in the correct posture.

[0098] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0099] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A wiring device comprising a wiring seat (6-1b) and a wiring terminal (6-2b) arranged in the wiring seat (6-1b); Its characteristics are: The wiring seat (6-1b) includes a wiring side wall (6-111b), and the wiring side wall (6-111b) is provided with two groups of wiring holes (6-13b). The wiring holes (6-13b) are matched with the wiring terminals (6-2b) in a one-to-one manner. The two groups of wiring holes (6-13b) are respectively a group one wiring hole and a group two wiring hole. The group one wiring hole includes at least two first wiring holes (6-131b), and the wiring terminals (6-2b) corresponding to each first wiring hole (6-131b) are a type of terminal ( 6-21b), each first-class terminal (6-21b) is used to be connected in series with one end of the first circuit of the switching device, the second wiring hole group includes at least two second wiring holes (6-132b), the number of the first wiring holes (6-131b) and the second wiring holes (6-132b) are the same, and the wiring terminals (6-2b) corresponding to each second wiring hole (6-132b) are second-class terminals (6-22b), and each second-class terminal (6-22b) is used to be connected in series with one end of the second circuit of the switching device.

2. The wiring device according to claim 1, wherein: The wiring terminal (6-2b) comprises a wiring frame (6-211b) and a wire pressing piece (6-213b), wherein the wire pressing piece (6-213b) cooperates with the wiring frame (6-211b) to press the external conductor inserted into the wiring frame (6-211b); the wiring side wall (6-111b) is further provided with two groups of operating holes (6-14b), wherein the operating holes (6-14b) are used for operating the wire pressing piece (6-213b) with external force to release the external conductor and connect with the wiring hole. (6-13b) are matched one-to-one, the aperture of the operation hole (6-14b) is smaller than the aperture of the wiring hole (6-13b), the two groups of operation holes (6-14b) are respectively a group of operation holes and a group of operation holes, the group of operation holes includes at least two first operation holes (6-141b) that are matched one-to-one with the first wiring holes (6-131b), and the group of operation holes includes at least two second operation holes (6-142b) that are matched one-to-one with the second wiring holes (6-132b).

3. The wiring device according to claim 2, wherein: The wiring holes of group one are offset to one side relative to the wiring holes of group two in direction d3; the first wiring holes (6-131b) of the wiring holes of group one are arranged side by side along direction d2, and the second wiring holes (6-132b) of the wiring holes of group two are arranged side by side along direction d2; the wiring holes (6-13b) and the corresponding operating holes (6-14b) are arranged side by side along direction d3; the wiring holes (6-13b) and the corresponding wiring terminals (6-2b) are arranged opposite to each other along direction d1, and the operating holes (6-14b) and the corresponding wiring terminals (6-2b) are arranged opposite to each other along direction d1; the directions d1, d2 and d3 are perpendicular to each other.

4. The wiring device according to claim 3, characterized in that: The first wiring holes (6-131b) and the second wiring holes (6-132b) are alternately arranged in sequence along the direction d2, a second operating hole (6-142b) is provided between two adjacent first wiring holes (6-131b), and a first operating hole (6-141b) is provided between two adjacent second wiring holes (6-132b); Alternatively, the group 1 wiring holes and the group 2 wiring holes are arranged in sequence in the direction d2, the group 1 wiring holes and the group 2 operating holes are arranged side by side along the direction d2, and the group 2 wiring holes and the group 1 operating holes are arranged side by side along the direction d2.

5. The wiring device according to claim 1, wherein: The terminal block (6-1b) further includes a terminal cavity (6-12b) arranged therein and used to accommodate the terminal (6-2b), the terminal cavity (6-12b) and the terminal terminal (6-2b) being matched one-to-one, the terminal cavity (6-12b) including a terminal cavity opening for allowing the terminal (6-2b) to be inserted into the terminal cavity (6-12b), the terminal cavity opening being arranged at one end of the corresponding terminal cavity (6-12b) in the direction d3, the terminal cavity (6-12b) matched with the first type of terminal (6-21b) being the first cavity, and the terminal cavity (6-12b) matched with the second type of terminal (6-22b) being the second cavity, the terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity being respectively arranged on two side walls of the terminal block (6-1b) that are opposite to each other along the direction d3.

6. The wiring device according to claim 5, characterized in that: The wiring seat (6-1b) includes a terminal cavity insertion hole (6-120b) provided on its bottom wall and connected one-to-one with the terminal cavity (6-12b). The terminal cavity insertion hole (6-120b) is used for allowing the connection plate of the circuit breaker to be inserted into the corresponding terminal cavity (6-12b) and to cooperate with the corresponding wiring terminal (6-2b).

7. The wiring device according to claim 3, characterized in that: The wiring frame (6-211b) comprises a wide portion (6-2111b) and a narrow portion (6-2112b) sequentially arranged along a direction d3 and connected to each other, the wiring screw (6-212b) is threadedly connected to the narrow portion (6-2112b), the wide portion (6-2111b) is used for inserting an external conductor therein, the wire pressing piece (6-213b) is a wire pressing block rotatably arranged on the wiring frame (6-211b), and the wire pressing block is driven by the wiring screw (6-212b) to swing within the wiring frame (6-211b) to compress and release the external conductor inserted into the wide portion (6-2111b); in the direction d2, the size of the wide portion (6-2111b) is larger than that of the narrow portion (6-2112b).

8. A circuit breaker, characterized in that: The circuit breaker includes the wiring device according to any one of claims 1 to 7; the circuit breaker also includes a housing (1a) and a first circuit and a second circuit both arranged in the housing (1a), the first circuit including a first connecting plate (14b) electrically connected to each of the first-class terminals (6-21b), and the second circuit including a second connecting plate (1c) electrically connected to each of the second-class terminals (6-22b); the housing (1a) and the wiring seat (6-1b) are an integrated structure or a split structure.

9. The circuit breaker according to claim 8, characterized in that: The first circuit also includes a handle (1b), an operating mechanism (7b) and a contact system (11b). Each type of terminal (6-21b) is electrically connected to the contact system (11b) through a first connecting plate (14b). The contact system (11b) includes a movable contact (11-1b) and a static contact (11-2b) used in conjunction with each other. The handle (1b) is arranged to slide along a direction d1 and is connected to the movable contact (11-1b) through an operating mechanism (7b) to drive the movable contact (11-1b) and the static contact (11-2b) to close and open. The wiring device and the handle (1b) are arranged at the same end of the housing (1a) in the direction d1. The wiring device and the handle (1b) are arranged side by side in the direction d3, and the direction d1 and the direction d3 are perpendicular to each other.

10. The circuit breaker according to claim 8, wherein: The housing (1a) further comprises heat dissipation holes (1-9a), and a pair of side walls of the housing (1a) are both provided with heat dissipation holes (1-9a); the housing (1a) further comprises guide ribs (1-23a) arranged on its outer surface and used to cooperate with guide grooves on the housing of the installation position, and the guide ribs (1-23a) extend along the direction in which the circuit breaker is inserted into the installation position.

Images