Circuit breaker

Abstract

The utility model discloses a circuit breaker, and relates to the technical field of electric appliance switches. The circuit breaker comprises a first shell, a second shell, a first circuit, a second circuit, a first plugging assembly, a second plugging assembly, a first wiring assembly and a second wiring assembly, wherein the first shell and the second shell are buckled with each other along the width direction; the first circuit and the second circuit are opposite in polarity; the first plugging assembly and the second plugging assembly are arranged along the height direction; the first plugging assembly, the second plugging assembly, the first wiring assembly and the second wiring assembly are arranged in the length direction, the first plugging assembly is electrically connected with the second wiring assembly through a second line, and the second plugging assembly is electrically connected with the first wiring assembly through a first line; the rotating plane of the moving contact is parallel to the height direction. The circuit breaker can simultaneously meet the use requirement of larger rated current and the design requirement of smaller product volume.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric appliance switch, specifically, relates to a circuit breaker. BACKGROUND

[0002] With the rapid development of social economy and urban construction, people's living standards and living standards have been significantly improved, and the safety of electricity has been more comprehensive cognition. In order to increase the safety of electricity, the circuit breaker is usually connected in the power circuit. The circuit breaker is a switch device that can close, carry and open the current under normal loop conditions and can close, carry and open the current under abnormal loop conditions within a specified time. When leakage, overload, short circuit and other faults occur in the system, the circuit breaker can quickly cut off the fault mechanism in the system or cut off the entire power supply to prevent the fault from expanding and avoid causing huge economic losses and casualties. The rated current of the circuit breaker in the prior art is small, which cannot meet the use demand of large current and the design demand of small product size at the same time. SUMMARY

[0003] The utility model aims at providing a circuit breaker, which can meet the use demand of large rated current and the design demand of small product size at the same time.

[0004] The embodiment of the utility model is realized as follows:

[0005] The utility model discloses an embodiment of a circuit breaker, which comprises a first shell and a second shell buckled to each other along the width direction, a first line and a second line with opposite polarity, a first plug-in assembly and a second plug-in assembly arranged along the height direction, and a first wiring assembly and a second wiring assembly arranged along the width direction. The first plug-in assembly, the second plug-in assembly, the first wiring assembly and the second wiring assembly are arranged along the length direction. The first plug-in assembly is electrically connected to the second wiring assembly through the second line. The second plug-in assembly is electrically connected to the first wiring assembly through the first line. The circuit breaker further comprises a movable contact, and the rotation plane of the movable contact is parallel to the height direction. The circuit breaker can meet the use demand of large rated current and the design demand of small product size at the same time.

[0006] As an implementable mode, a partition plate fixedly arranged between the first shell and the second shell is further included. A first chamber is formed between the first shell and the partition plate, and a second chamber is formed between the second shell and the partition plate. The first line is arranged in the first chamber, and the second line is arranged in the second chamber.

[0007] As an implementable mode, a first via hole is arranged on the partition plate, the first line comprises a wiring piece, and the wiring piece passes through the first via hole.

[0008] As an implementation, the second via is arranged on the partition plate, and the second circuit includes a shunt passing through the second via.

[0009] As an implementation, the first plug-in assembly includes a plurality of first plug-in parts arranged along the width direction, and the plurality of first plug-in parts are connected in parallel, and / or the second plug-in assembly includes a plurality of second plug-in parts arranged along the width direction, and the plurality of second plug-in parts are connected in parallel; the first plug-in part and / or the second plug-in part is in a plate structure, and the plate surface direction of the plate structure is parallel to the width direction.

[0010] As an implementation, the first plug-in assembly includes a plurality of first plug-in parts arranged along the width direction, and the plurality of first plug-in parts are connected in parallel, and / or the second plug-in assembly includes a plurality of second plug-in parts arranged along the width direction, and the plurality of second plug-in parts are connected in parallel.

[0011] As an implementation, the first cavity further includes an electric operating mechanism, the second cavity further includes a manual operating mechanism and a static contact, and the electric operating mechanism, the manual operating mechanism and the moving contact are sequentially connected in transmission, and the electric operating mechanism is used to drive the moving contact and the static contact to close or open through the manual operating mechanism.

[0012] As an implementation, the electric operating mechanism includes a motor, a gear set, a first inner handle and a transmission shaft, the motor, the gear set and the first inner handle are sequentially connected in transmission, the first inner handle and a second inner handle of the manual operating mechanism are coaxially sleeved on the transmission shaft, and the motor drives the gear set and the first inner handle to contact or separate, so as to drive the second inner handle to drive the moving contact and the static contact to contact or separate.

[0013] As an implementation, the manual operating mechanism further includes a button, a first connecting rod, a second inner handle, a second connecting rod and an operating mechanism, the button, the first connecting rod, the second inner handle, the second connecting rod and the operating mechanism are sequentially connected in transmission, the button is driven to rotate the second inner handle through the first connecting rod, so as to drive the second inner handle to drive the operating mechanism to be in an unlocking or locking state through the second connecting rod.

[0014] As an implementation, the moving contact includes a contact support rotatably arranged in the second cavity, and a plurality of contact pieces fixedly arranged on the contact support, and the plurality of contact pieces are one-to-one connected with the plurality of first plug-in parts.

[0015] As an implementable mode, the first line has a positive polarity, the second line has a negative polarity, the first line comprises a plurality of first sub-lines in parallel, and the second line comprises a plurality of second sub-lines in parallel.

[0016] The beneficial effects of the embodiments of the utility model include:

[0017] The circuit breaker comprises a first shell and a second shell buckled with each other along a width direction, a first line and a second line with opposite polarities, a first plug-in assembly and a second plug-in assembly arranged along a height direction, and a first wiring assembly and a second wiring assembly arranged along the width direction, the first plug-in assembly, the second plug-in assembly, the first wiring assembly and the second wiring assembly are arranged along a length direction, the first plug-in assembly is electrically connected with the second wiring assembly through the second line, the second plug-in assembly is electrically connected with the first wiring assembly through the first line, the circuit breaker further comprises a movable contact, a rotation plane of the movable contact is parallel to the height direction, so as to form an installation shell together with the first shell and the second shell to support and protect the parts, and the first line and the second line are smoothly connected to an electric circuit, thereby, the rated current of the first line and the second line can be increased, so that the rated current of the circuit breaker is increased, meanwhile, the first plug-in assembly, the second plug-in assembly, the first wiring assembly, the second wiring assembly and the movable contact are reasonably arranged, on the basis of being more in line with the existing use habits of users, only the size of the circuit breaker in the width direction in the prior art is increased, so that the size of the circuit breaker in the length direction and the height direction in the prior art can be avoided to be increased. The circuit breaker can meet the use requirement of a larger rated current and the design requirement of a smaller product volume at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0019] Figure 1 One of the structure schematic diagram of the circuit breaker provided by the embodiments of the utility model;

[0020] Figure 2 The second structure schematic diagram of the circuit breaker provided by the embodiments of the utility model;

[0021] Figure 3 The third structure schematic diagram of the circuit breaker provided by the embodiments of the utility model;

[0022] Figure 4The utility model provides a circuit breaker's structure diagram four of embodiment of the utility model provides.

[0023] Figure 5 The utility model provides a circuit breaker's structure diagram five of embodiment of the utility model provides.

[0024] Figure 6 The utility model provides a circuit breaker's structure diagram six of embodiment of the utility model provides.

[0025] Figure 7 The utility model provides a circuit breaker's structure diagram seven of embodiment of the utility model provides.

[0026] Figure 8 The utility model provides a circuit breaker's structure diagram eight of embodiment of the utility model provides.

[0027] Figure 9 The utility model provides a circuit breaker's structure diagram nine of embodiment of the utility model provides.

[0028] Icon: 10 - first shell, 20 - second shell, 30 - partition, 40 - first plug-in assembly, 41a, 41b - first plug-in part, 50 - second plug-in assembly, 51a, 51b - second plug-in part, 60 - first wiring assembly, 61a, 61b - first wiring board, 62a, 62b - first wiring terminal, 70 - second wiring assembly, 71a, 71b - second wiring board, 72a, 72b - second wiring terminal, 81 - motor, 82 - gear set, 83 - first inner handle, 84 - transmission shaft, 91 - button, 92 - first connecting rod, 93 - second inner handle, 94 - second connecting rod, 95 - operating mechanism, 100 - moving contact, 101a, 101b - contact piece, 110 - static contact, 120 - shunt, x - length direction, y - width direction, z - height direction. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. The components of the utility model embodiment described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0031] It should be noted that like numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not require further defining and explaining in subsequent views.

[0032] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the connection between two elements inside. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] Please refer to Figures 1 to 9 The embodiment of the application provides a circuit breaker, comprising a first shell 10 and a second shell 20 which are mutually buckled along the width direction y, a first line and a second line which are opposite in polarity, a first plug-in assembly 40 and a second plug-in assembly 50 which are arranged along the height direction z, and a first wiring assembly 60 and a second wiring assembly 70 which are arranged along the width direction y, the first plug-in assembly 40, the second plug-in assembly 50, the first wiring assembly 60 and the second wiring assembly 70 are arranged along the length direction x, the first plug-in assembly 40 is electrically connected with the second wiring assembly 70 through the second line, the second plug-in assembly 50 is electrically connected with the first wiring assembly 60 through the first line, and the circuit breaker further comprises a movable contact 100, and the rotation plane of the movable contact 100 is parallel to the height direction z. The circuit breaker can simultaneously meet the use requirement of a larger rated current and the design requirement of a smaller product volume.

[0036] It should be noted that, as shown in Figure 1 The circuit breaker includes a first shell 10 and a second shell 20 which are buckled to each other along the width direction y to jointly form a mounting shell with a receiving cavity, so as to support and protect the components by the mounting shell.

[0037] Please refer to Figures 2 to 5 The circuit breaker further includes a first line and a second line with opposite polarities, so that the circuit breaker can be connected to the power circuit by the first line and the second line, and thus the rated current of the circuit breaker can be increased by increasing the rated current of the first line and the second line. As an implementable manner, the polarity of the first line is positive, the polarity of the second line is negative, the first line includes a plurality of first sub-lines in parallel, and the second line includes a plurality of second sub-lines in parallel, so as to increase the rated current of the first line and the second line by the effect of parallel shunt, thereby increasing the rated current of the circuit breaker.

[0038] Please refer to Figures 1 to 5 The circuit breaker further includes a first plug-in assembly 40, a second plug-in assembly 50, a first wiring assembly 60 and a second wiring assembly 70, wherein the first plug-in assembly 40 and the second plug-in assembly 50 are arranged along the height direction z, the first wiring assembly 60 and the second wiring assembly 70 are arranged along the width direction y, the first plug-in assembly 40, the second plug-in assembly 50, the first wiring assembly 60 and the second wiring assembly 70 are arranged along the length direction x, the first plug-in assembly 40 is electrically connected to the second wiring assembly 70 through the second line, the second plug-in assembly 50 is electrically connected to the first wiring assembly 60 through the first line, and the circuit breaker further includes a movable contact 100, the rotation plane of the movable contact 100 relative to a stationary contact 110 is parallel to the height direction z. The above arrangement does not change the rotation plane of the movable contact 100, and is more in line with the existing use habits of users, and on this basis, only the size of the circuit breaker in the width direction y in the prior art is increased, so that the size of the circuit breaker in the length direction x and the height direction z in the prior art can be avoided.

[0039] Please refer to Figures 1 to 5 As an implementable manner, the circuit breaker further includes a partition plate 30 fixedly arranged between the first shell 10 and the second shell 20, a first chamber is formed between the first shell 10 and the partition plate 30, and a second chamber is formed between the second shell 20 and the partition plate 30; the first line is arranged in the first chamber, and the second line is arranged in the second chamber.

[0040] It should be noted that the circuit breaker is provided with the partition plate 30 between the first shell 10 and the second shell 20 to separate the accommodating cavity into a first chamber and a second chamber, wherein the first chamber refers to the space between the first shell 10 and the partition plate 30, the second chamber refers to the space between the second shell 20 and the partition plate 30, the first line is arranged in the first chamber, and the second line is arranged in the second chamber to realize electrical isolation of the first line and the second line and to avoid the parts arranged in the first chamber and the second chamber. The specific structure of the partition plate 30 can be a planar structure, an I-shaped structure, a U-shaped structure, and the like, and the person skilled in the art can reasonably select and design according to the actual situation, which is not limited specifically here.

[0041] As an implementable manner, the area of the orthographic projection of the partition plate 30 on the first shell 10 in the width direction y is less than or equal to the area of the first shell 10. In other words, the first chamber and the second chamber can be partially isolated by the partition plate 30, or completely isolated by the partition plate 30. In the case of complete isolation, some through holes need to be formed on the partition plate 30 to allow some parts to pass through smoothly.

[0042] As an implementable manner, the partition plate 30 is provided with a first through hole, the first line includes a connecting piece, and the connecting piece passes through the first through hole; the partition plate 30 is provided with a second through hole, and the second line includes a shunt 120, and the shunt 120 passes through the second through hole. In this way, the electrical isolation of the first chamber and the second chamber can be realized by the partition plate 30, and the first line and the second line can be connected smoothly by the first through hole and the second through hole.

[0043] As an implementable manner, as shown in Figures 1 to 5 The first plug-in assembly 40 includes a plurality of first plug-in parts arranged in the width direction y, and the plurality of first plug-in parts can be connected in parallel through a plurality of second sub-lines, and / or the second plug-in assembly 50 includes a plurality of second plug-in parts arranged in the width direction, and the plurality of second plug-in parts can be connected in parallel through a plurality of first sub-lines. In other words, in the above embodiment, the first plug-in assembly 40 and the second plug-in assembly 50 can be connected in parallel in a split type, and of course, in other embodiments, the first plug-in assembly 40 and the second plug-in assembly 50 can also be directly selected as a whole. As for the specific structure of the first plug-in part and the second plug-in part, for example, the first plug-in part and / or the second plug-in part can be a plate structure, and the plate surface direction of the plate structure is parallel to the width direction y.

[0044] As an implementable manner, as shown in Figure 1As shown in the figure, the first wiring assembly 60 includes a plurality of first wiring terminals arranged along the width direction y, and the plurality of first wiring terminals are connected in parallel, and / or the second wiring assembly 70 includes a plurality of second wiring terminals arranged along the width direction y, and the plurality of second wiring terminals are connected in parallel, so as to access the power circuit.

[0045] As an implementable manner, as shown in the figure, Figure 2 and Figure 5 As shown in the figure, the first wiring assembly 60 includes a plurality of first wiring plates arranged along the height direction z, and the plurality of first wiring plates can be connected in parallel through a plurality of first sub-lines, and / or the second wiring assembly 70 includes a plurality of second wiring plates arranged along the height direction z, and the plurality of second wiring plates can be connected in parallel through a plurality of second sub-lines. In other words, in the above embodiment, the first wiring plate and the second wiring plate can be connected in parallel in a split type, of course, in other embodiments, the first wiring plate and the second wiring plate can also be directly selected as a whole.

[0046] As an implementable manner, as shown in the figure, Figures 6 to 9 As shown in the figure, the circuit breaker further includes an electric operating mechanism located in the first chamber, and a hand operating mechanism and a static contact 110 located in the second chamber, the electric operating mechanism, the hand operating mechanism and the movable contact 100 are sequentially connected in transmission, and the electric operating mechanism is used to drive the movable contact 100 and the static contact 110 to close or open through the hand operating mechanism, so that the circuit breaker can realize both electric operation and manual operation, so that the circuit breaker has the advantage of remote control.

[0047] As an implementable manner, as shown in the figure, Figures 6 to 9 As shown in the figure, the electric operating mechanism includes a motor 81, a gear set 82, a first inner handle 83 and a transmission shaft 84, the motor 81, the gear set 82 and the first inner handle 83 are sequentially connected in transmission, the first inner handle 83 and a second inner handle 93 of the hand operating mechanism are coaxially sleeved on the transmission shaft 84, and the motor 81 drives the gear set 82 to contact or separate from the first inner handle 83, so that the transmission shaft 84 rotates, thereby driving the second inner handle 93 to drive the movable contact 100 to contact or separate from the static contact 110 through the transmission shaft 84. In addition, the electric operating mechanism can also include a circuit board, so as to control the forward rotation and reverse rotation of the motor 81 through the circuit board.

[0048] As an implementable manner, as shown in the figure, Figures 6 to 9As shown, the hand-operated mechanism further comprises a button 91, a first connecting rod 92, a second inner handle 93, a second connecting rod 94 and an operating mechanism 95, which are sequentially drivingly connected, the button 91 is driven to rotate the second inner handle 93 through the first connecting rod 92, so as to drive the second inner handle 93 to drive the operating mechanism 95 to be in an unlocked or locked state through the second connecting rod 94. When the operating mechanism 95 is in the unlocked state, the movable contact 100 can rotate relative to the fixed contact 110, so as to gradually approach or gradually move away from each other between the movable contact 100 and the fixed contact 110; when the operating mechanism 95 is in the locked state, the movable contact 100 can always be kept in a contact state or a separation state with the fixed contact 110.

[0049] It should be understood that the hand-operated mechanism can also include a magnetic release, a thermal release, an arc extinguishing chamber, etc., and those skilled in the art can make reasonable selection and design according to the actual situation, which will not be described in detail here; for example, as shown in Figure 1 As shown, the button 91 is arranged along the width direction and located above the first wiring assembly 60 and the second wiring assembly 70, in addition, an observation window and an indicating member can also be centrally arranged, so as to observe whether the circuit breaker is in a closed state or an open state at this time.

[0050] As an implementable manner, as shown in Figure 3 and Figure 4 As shown, the movable contact 100 comprises a contact bracket rotatably arranged in the second cavity, and a plurality of contact pieces fixedly arranged on the contact bracket, the plurality of contact pieces are arranged one by one corresponding to the plurality of first plug-in parts and are connected to each other.

[0051] As shown in Figures 1 to 5 In the drawings, the first plug-in assembly 40 comprises the first plug-in part 41a and the first plug-in part 41b arranged along the width direction, and the second plug-in assembly 50 comprises the second plug-in part 51a and the second plug-in part 51b arranged along the width direction. Among them, the first plug-in part 41a is located in the first cavity, the first plug-in part 41b is located in the second cavity, the second plug-in part 51a is located in the first cavity, and the second plug-in part 51b is located in the second cavity.

[0052] Correspondingly, as shown in Figure 3 and Figure 4 In the drawings, the movable contact 100 comprises the contact piece 101a and the contact piece 101b coaxially and spaced apart on the contact bracket, the first plug-in part 41a is connected to the contact piece 101a through a soft connecting line, and the first plug-in part 41b is connected to the contact piece 101b through another soft connecting line; as Figure 2 、 Figure 6 、 Figure 7 and Figure 9As shown in the drawings, the second wiring assembly 70 in the drawings includes the second wiring board 71a and the second wiring board 71b in parallel, one end of the second wiring board 71a and the second wiring board 71b is connected with the static contact plate of the static contact 110 through a coil, and the other end is connected with the wiring frame located in the second chamber; as Figure 5 and Figure 8 As shown in the drawings, the first wiring assembly 60 in the drawings includes the first wiring board 61a and the first wiring board 61b, one end of the first wiring board 61a is connected with the wiring frame located in the first chamber, and the other end is connected with the second plug-in part 51a located in the first chamber, one end of the first wiring board 61b (i.e. the wiring part described above) is connected with the wiring frame located in the first chamber, and the other end is connected with the second plug-in part 51b located in the second chamber through the second through hole on the partition plate 30.

[0053] In addition, the first plug-in assembly 40 and the moving contact 100 are further provided with the shunt 120 described above, so that the current can flow into the shunt 120 from the first plug-in part 41a and the first plug-in part 41b, and under the action of the shunt 120, part of the current flows into the contact piece 101a through a soft connection line, and the other part of the current flows into the contact piece 101b through another soft connection line; when the circuit breaker is closed, the moving contact 100 and the static contact 110 are in contact, the current flows from the moving contact 100 into the static contact 110, and then flows from the static contact plate into the second wiring assembly 70; the second plug-in part 51a and the second plug-in part 51b are straight-through poles, that is, the current directly flows to the second plug-in part 51a and the second plug-in part 51b through the first wiring board 61a and the first wiring board 61b.

[0054] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0055] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not describe various possible combinations again.

Claims

1. A circuit breaker, characterized in that, The circuit breaker includes a first housing (10) and a second housing (20) that interlock along the width direction (y), a first line and a second line with opposite polarities, a first plug-in assembly (40) and a second plug-in assembly (50) arranged along the height direction (z), and a first wiring assembly (60) and a second wiring assembly (70) arranged along the width direction (y). The first plug-in assembly (40), the second plug-in assembly (50) and the first wiring assembly (60), the second wiring assembly (70) are arranged along the length direction (x). The first plug-in assembly (40) is electrically connected to the second wiring assembly (70) through the second line, and the second plug-in assembly (50) is electrically connected to the first wiring assembly (60) through the first line. The circuit breaker also includes a moving contact (100) whose plane of rotation is parallel to the height direction (z).

2. The circuit breaker according to claim 1, characterized in that, It also includes a partition (30) fixedly disposed between the first housing (10) and the second housing (20), forming a first chamber between the first housing (10) and the partition (30), and forming a second chamber between the second housing (20) and the partition (30); the first line passes through the first chamber, and the second line passes through the second chamber.

3. The circuit breaker according to claim 2, characterized in that, The partition (30) is provided with a first through hole, and the first line includes a connector that passes through the first through hole.

4. The circuit breaker according to claim 2, characterized in that, The partition (30) is provided with a second through hole, and the second line includes a splitter (120) that passes through the second through hole.

5. The circuit breaker according to claim 2, characterized in that, The first plug-in assembly (40) includes a plurality of first plug-in portions arranged along the width direction (y), and the plurality of first plug-in portions are connected in parallel, and / or the second plug-in assembly (50) includes a plurality of second plug-in portions arranged along the width direction (y), and the plurality of second plug-in portions are connected in parallel; The first plug-in portion and / or the second plug-in portion have a plate-like structure, and the plate surface direction of the plate-like structure is parallel to the width direction (y).

6. The circuit breaker according to claim 1, characterized in that, The first wiring assembly (60) includes a plurality of first terminals arranged along the width direction (y), and the plurality of first terminals are connected in parallel, and / or the second wiring assembly (70) includes a plurality of second terminals arranged along the width direction (y), and the plurality of second terminals are connected in parallel.

7. The circuit breaker according to claim 5, characterized in that, It also includes an electric operating mechanism located in the first chamber, and a manual operating mechanism and a stationary contact (110) located in the second chamber. The electric operating mechanism, the manual operating mechanism and the moving contact (100) are connected in sequence. The electric operating mechanism is used to drive the moving contact (100) to close or open with the stationary contact (110) through the manual operating mechanism.

8. The circuit breaker according to claim 7, characterized in that, The electric operating mechanism includes a motor (81), a gear set (82), a first inner handle (83), and a transmission shaft (84). The motor (81), the gear set (82), and the first inner handle (83) are sequentially connected in a transmission manner. The first inner handle (83) and the second inner handle (93) of the manual operating mechanism are coaxially sleeved on the transmission shaft (84). The motor (81) drives the gear set (82) to contact or separate from the first inner handle (83), so as to drive the second inner handle (93) to drive the moving contact (100) to contact or separate from the stationary contact (110).

9. The circuit breaker according to claim 7, characterized in that, The manual operating mechanism further includes a button (91), a first link (92), a second inner handle (93), a second link (94), and an operating mechanism (95). The button (91), the first link (92), the second inner handle (93), the second link (94), and the operating mechanism (95) are sequentially connected. The button (91) is driven to rotate the second inner handle (93) through the first link (92), thereby causing the second inner handle (93) to drive the operating mechanism (95) to be in an unlocked or locked state through the second link (94).

10. The circuit breaker according to claim 7, characterized in that, The moving contact (100) includes a contact bracket rotatably disposed in the second chamber and a plurality of contact pieces fixedly disposed on the contact bracket, wherein the plurality of contact pieces are connected one-to-one with the plurality of first insertion portions.

11. The circuit breaker according to any one of claims 1 to 10, characterized in that, The first line has a positive polarity, and the second line has a negative polarity. The first line includes multiple first sub-lines connected in parallel, and the second line includes multiple second sub-lines connected in parallel.

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