A circuit breaker
By adopting a specific layout of the housing and circuit structure in the circuit breaker, the rated current is increased, which solves the problem that existing circuit breakers cannot simultaneously meet the requirements of large current and miniaturization, and achieves a balance between large current and small size.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI LIANGXIN ELECTRICAL CO LTD
- Filing Date
- 2024-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
The rated current of existing circuit breakers is relatively small, which cannot simultaneously meet the needs of large current use and the design requirements of product miniaturization.
Design a circuit breaker that uses a first and second housing that interlocks with each other along the width direction, a first and second line with opposite polarities, and plug-in components and wiring components arranged along the height direction. By rationally arranging the first plug-in components, the second plug-in components, the first wiring components, and the second wiring components, the rated current can be increased while keeping the product size small.
It achieves the design requirements of larger rated current and smaller product size, conforms to usage habits, and avoids the increase in size in the length and height directions.
Smart Images
Figure CN122117700A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrical switch technology, and more specifically, to a circuit breaker. Background Technology
[0002] With the rapid development of society, economy, and urban construction, people's living standards and housing conditions have significantly improved, leading to a more comprehensive understanding of electrical safety. To enhance electrical safety, circuit breakers are typically installed in electrical circuits. A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions and, within a specified time, closing, carrying, and interrupting current under abnormal circuit conditions. When faults such as leakage, overload, or short circuit occur in the system, the circuit breaker can quickly disconnect the faulty component or cut off the entire power supply to prevent the fault from escalating and avoid significant economic losses and personal injury. However, existing circuit breakers have relatively low rated currents, which cannot simultaneously meet the demands of high-current applications and miniaturized design requirements. Summary of the Invention
[0003] The purpose of this invention is to provide a circuit breaker that can simultaneously meet the requirements of large rated current and small product size.
[0004] The embodiments of the present invention are implemented as follows:
[0005] This invention provides a circuit breaker, comprising a first housing and a second housing that interlock along the 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 the height direction, and a first wiring assembly and a second wiring assembly arranged along the width direction. The first plug-in assembly and the second plug-in assembly are arranged along the length direction with the first wiring assembly and the second wiring assembly. The first plug-in assembly is electrically connected to the second wiring assembly via the second line, and the second plug-in assembly is electrically connected to the first wiring assembly via the first line. The circuit breaker also includes a moving contact, the plane of rotation of which is parallel to the height direction. This circuit breaker can simultaneously meet the requirements of a large rated current and a small product size.
[0006] As one possible implementation, it further includes a partition fixedly disposed between the first housing and the second housing, forming a first chamber between the first housing and the partition, and forming a second chamber between the second housing and the partition; the first line passes through the first chamber, and the second line passes through the second chamber.
[0007] In one possible implementation, the partition is provided with a first through hole, and the first line includes a connector that passes through the first through hole.
[0008] In one possible implementation, the partition is provided with a second via, and the second line includes a shunt that passes through the second via.
[0009] In one possible implementation, the first plug-in assembly includes a plurality of first plug-in portions arranged along the width direction, and the plurality of first plug-in portions are connected in parallel; and / or, the second plug-in assembly includes a plurality of second plug-in portions arranged along the width direction, and the plurality of second plug-in portions are connected in parallel; the first plug-in portions and / or the second plug-in portions have a plate-like structure, and the plate surface direction of the plate-like structure is parallel to the width direction.
[0010] In one possible implementation, the first wiring assembly includes a plurality of first terminals arranged along the width direction, and the plurality of first terminals are connected in parallel; and / or, the second wiring assembly includes a plurality of second terminals arranged along the width direction, and the plurality of second terminals are connected in parallel.
[0011] As one possible implementation, it also includes an electric operating mechanism located in the first chamber, and a manual operating mechanism and a stationary contact located in the second chamber. The electric operating mechanism, the manual operating mechanism and the moving contact are sequentially connected in a transmission manner. The electric operating mechanism is used to drive the moving contact to close or open with the stationary contact through the manual operating mechanism.
[0012] In one possible 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 a transmission manner. The first inner handle and the second inner handle of the manual operating mechanism are coaxially sleeved on the transmission shaft. The motor drives the gear set to contact or separate from the first inner handle, thereby driving the second inner handle to drive the moving contact to contact or separate from the stationary contact.
[0013] In one possible implementation, the hand-operated mechanism further includes a button, a first link, a second inner handle, a second link, and an operating mechanism. The button, the first link, the second inner handle, the second link, and the operating mechanism are sequentially connected. The button is driven to rotate the second inner handle via the first link, thereby causing the second inner handle to drive the operating mechanism to be in an unlocked or locked state via the second link.
[0014] In one possible implementation, the moving contact 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.
[0015] In one possible implementation, the first line is positive and the second line is negative. The first line includes multiple first sub-lines connected in parallel, and the second line includes multiple second sub-lines connected in parallel.
[0016] The beneficial effects of the embodiments of the present invention include:
[0017] The circuit breaker includes a first housing and a second housing that interlock along the 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 the height direction, and a first wiring assembly and a second wiring assembly arranged along the width direction. The first plug-in assembly and the second plug-in assembly are arranged along the length direction with the first wiring assembly and the second wiring assembly. The first plug-in assembly is electrically connected to the second wiring assembly via the second line, and the second plug-in assembly is electrically connected to the first wiring assembly via the first line. The circuit breaker also includes a moving contact, the plane of rotation of which is parallel to the height direction. The first housing and the second housing together form a mounting housing to support and protect the components, and the circuit breaker is smoothly connected to the power circuit via the first line and the second line. Thus, the rated current of the circuit breaker can be increased by increasing the rated current of the first line and the second line. At the same time, this application also increases the size of the circuit breaker in the width direction by making reasonable arrangements of the first plug-in assembly, the second plug-in assembly, the first wiring assembly, the second wiring assembly and the moving contact, which is more in line with the existing user habits, thereby avoiding the increase of the size of the circuit breaker in the length and height directions. This circuit breaker can simultaneously meet the requirements of large rated current and small product size. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is one of the structural schematic diagrams of a circuit breaker provided in an embodiment of the present invention;
[0020] Figure 2 This is a second schematic diagram of the structure of the circuit breaker provided in an embodiment of the present invention;
[0021] Figure 3 This is the third schematic diagram of the circuit breaker provided in the embodiment of the present invention;
[0022] Figure 4This is the fourth schematic diagram of the circuit breaker provided in the embodiments of the present invention;
[0023] Figure 5 This is the fifth schematic diagram of the circuit breaker provided in the embodiments of the present invention;
[0024] Figure 6 This is the sixth schematic diagram of the circuit breaker provided in the embodiment of the present invention;
[0025] Figure 7 This is the seventh schematic diagram of the circuit breaker provided in the embodiment of the present invention;
[0026] Figure 8 This is the eighth schematic diagram of the circuit breaker provided in the embodiment of the present invention;
[0027] Figure 9 This is the ninth schematic diagram of the circuit breaker provided in the embodiment of the present invention.
[0028] Icons: 10-First housing; 20-Second housing; 30-Baffle; 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 terminal block; 62a, 62b-First terminal; 70-Second wiring assembly; 71a, 71b-Second terminal block; 72a, 72b-Second terminal; 81-Motor; 82-Gear set; 83-First inner handle; 84-Drive shaft; 91-Button; 92-First link; 93-Second inner handle; 94-Second link; 95-Operating mechanism; 100-Moving contact; 101a, 101b-Contact piece; 110-Stationary contact; 120-Shunting device; x-Length direction; y-Width direction; z-Height direction. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0035] Please refer to the reference. Figures 1 to 9 This application provides a circuit breaker, including a first housing 10 and a second housing 20 that are interlocked along the width direction y, a first circuit and a second circuit 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 and the second plug-in assembly 50 are arranged with the first wiring assembly 60 and the second wiring assembly 70 along the length direction x. The first plug-in assembly 40 is electrically connected to the second wiring assembly 70 through the second circuit, and the second plug-in assembly 50 is electrically connected to the first wiring assembly 60 through the first circuit. The circuit breaker also includes a moving contact 100, the plane of rotation of which is parallel to the height direction z. This circuit breaker can simultaneously meet the requirements of a large rated current and a small product size.
[0036] It should be noted that, as Figure 1 As shown, the circuit breaker includes a first housing 10 and a second housing 20 that are interlocked along the width direction y, so that the first housing 10 and the second housing 20 together form a mounting housing with a receiving cavity, so as to support and protect the components through the mounting housing.
[0037] Please refer to the reference again. Figures 2 to 5 The circuit breaker also includes a first line and a second line with opposite polarities, allowing the circuit breaker to be connected to the power circuit via the first and second lines. This allows the rated current of the circuit breaker to be increased by increasing the rated current of the first and second lines. In one possible implementation, the first line is positive and the second line is negative. The first line includes multiple first sub-lines connected in parallel, and the second line includes multiple second sub-lines connected in parallel. This parallel current-sharing effect increases the rated current of the first and second lines, thereby increasing the rated current of the circuit breaker.
[0038] Please refer to the reference again. Figures 1 to 5 The circuit breaker also includes a first plug-in assembly 40, a second plug-in assembly 50, a first wiring assembly 60, and a second wiring assembly 70. 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), and 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 via a second line, and the second plug-in assembly 50 is electrically connected to the first wiring assembly 60 via a first line. The circuit breaker also includes a moving contact 100, whose plane of rotation relative to the stationary contact 110 is parallel to the height direction (z). This arrangement does not require changing the plane of rotation of the moving contact 100, better conforming to existing user habits. Furthermore, it only increases the size of the circuit breaker in the width direction (y) of the prior art, thus avoiding the need to increase the size of the circuit breaker in the length direction (x) and the height direction (z) of the prior art.
[0039] Please refer to the reference. Figures 1 to 5 As one possible implementation, the circuit breaker further 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; a first line passes through the first chamber, and a second line passes through the second chamber.
[0040] It should be noted that the circuit breaker divides the housing into a first chamber and a second chamber by adding a partition 30 between the first housing 10 and the second housing 20. The first chamber refers to the space between the first housing 10 and the partition 30, and the second chamber refers to the space between the second housing 20 and the partition 30. The first circuit passes through the first chamber, and the second circuit passes through the second chamber, achieving electrical isolation between the first and second circuits and allowing for the avoidance of components located in the first and second chambers. The specific structure of the partition 30 can be planar, I-shaped, or U-shaped, etc. Those skilled in the art should be able to make reasonable choices and designs based on actual conditions; no specific limitations are imposed here.
[0041] As one possible implementation, the area of the orthographic projection of the partition 30 onto the first housing 10 along the width direction y is less than or equal to the area of the first housing 10. In other words, the first chamber and the second chamber described above can be partially isolated by the partition 30, or they can be completely isolated by the partition 30. In the case of complete isolation, some through holes need to be made on the partition 30 to allow some components to pass through smoothly.
[0042] In one possible implementation, the partition 30 is provided with a first through hole, and a first circuit including a connector passes through the first through hole; the partition 30 is provided with a second through hole, and a second circuit including a shunt 120 passes through the second through hole. Thus, electrical isolation between the first and second chambers can be achieved through the partition 30, while the first and second through holes can ensure smooth wiring of the first and second circuits.
[0043] As one possible implementation method, such as Figures 1 to 5 As shown, 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 can be connected in parallel through a plurality of second sub-circuits. Similarly, the second plug-in assembly 50 includes a plurality of second plug-in portions arranged along the width direction, and the plurality of second plug-in portions can be connected in parallel through a plurality of first sub-circuits. In other words, in the above embodiments, the first plug-in assembly 40 and the second plug-in assembly 50 can be connected in parallel as separate components. Of course, in other embodiments, the first plug-in assembly 40 and the second plug-in assembly 50 can also be directly selected as an integral unit. Regarding the specific structure of the first plug-in portions and the second plug-in portions, for example, the first plug-in portions and / or the second plug-in portions can be plate-shaped structures, with the plate surface direction parallel to the width direction y.
[0044] As one possible implementation method, such as Figure 1As shown, 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, so as to facilitate connection to the power circuit.
[0045] As one possible implementation method, such as Figure 2 and Figure 5 As shown, the first wiring assembly 60 includes a plurality of first terminal blocks arranged along the height direction z, and the plurality of first terminal blocks can be connected in parallel through a plurality of first sub-circuits. And / or, the second wiring assembly 70 includes a plurality of second terminal blocks arranged along the height direction z, and the plurality of second terminal blocks can be connected in parallel through a plurality of second sub-circuits. In other words, in the above embodiment, the first terminal blocks and the second terminal blocks can be separately connected in parallel. Of course, in other embodiments, the first terminal blocks and the second terminal blocks can also be directly selected as an integral unit.
[0046] As one possible implementation method, such as Figures 6 to 9 As shown, the circuit breaker 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 sequentially connected. 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, so that the circuit breaker can be operated both electrically and manually, giving the circuit breaker the advantage of remote control.
[0047] As one possible implementation method, such as Figures 6 to 9 As shown, the electric operating mechanism includes a motor 81, a gear set 82, a first inner handle 83, and a drive shaft 84. The motor 81, gear set 82, and first inner handle 83 are sequentially connected and driven. The first inner handle 83 and the second inner handle 93 of the manual operating mechanism are coaxially mounted on the drive shaft 84. The motor 81 drives the gear set 82 to contact or separate from the first inner handle 83, causing the drive shaft 84 to rotate. This, in turn, drives the second inner handle 93 to contact or separate the moving contact 100 from the stationary contact 110. In addition, the electric operating mechanism may also include a circuit board to control the forward and reverse rotation of the motor 81.
[0048] As one possible implementation method, such as Figures 6 to 9As shown, the manual operating mechanism also 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, first link 92, second inner handle 93, second link 94, and operating mechanism 95 are sequentially connected. The button 91, driven by the first link 92, rotates the second inner handle 93, which in turn drives the operating mechanism 95 to either unlock or lock via the second link 94. When the operating mechanism 95 is unlocked, the moving contact 100 can rotate relative to the stationary contact 110, causing the moving contact 100 and stationary contact 110 to gradually approach or move away from each other. When the operating mechanism 95 is locked, the moving contact 100 can remain in contact with or separate from the stationary contact 110.
[0049] It should be understood that the manual operating mechanism may also include magnetic trip units, thermal trip units, arc-extinguishing chambers, etc. Those skilled in the art should be able to make reasonable selections and designs based on the actual situation; these will not be discussed in detail here. For example, such as... Figure 1 As shown, button 91 is arranged along the width direction and is located above the first wiring assembly 60 and the second wiring assembly 70. In addition, an observation window and indicator can be centrally located to observe whether the circuit breaker is in the closed or open state.
[0050] As one possible implementation method, such as Figure 3 and Figure 4 As shown, 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. The plurality of contact pieces are respectively disposed in correspondence with a plurality of first insertion portions and are interconnected with each other.
[0051] like Figures 1 to 5 As shown in the accompanying drawings, the first plug-in assembly 40 includes a first plug-in portion 41a and a first plug-in portion 41b arranged along the width direction, and the second plug-in assembly 50 includes a second plug-in portion 51a and a second plug-in portion 51b arranged along the width direction for explanation and illustration. Specifically, the first plug-in portion 41a is located in the first chamber, the first plug-in portion 41b is located in the second chamber, and the second plug-in portion 51a is located in the first chamber, and the second plug-in portion 51b is located in the second chamber.
[0052] Correspondingly, such as Figure 3 and Figure 4 As shown in the attached figure, the moving contact 100 includes contact pieces 101a and 101b coaxially and spaced apart on a contact support. A first insertion portion 41a is connected to contact piece 101a via a flexible connecting wire, and the first insertion portion 41b is connected to contact piece 101b via another flexible connecting wire. Figure 2 , Figure 6 , Figure 7 and Figure 9As shown in the attached figure, the second wiring assembly 70 includes a second wiring plate 71a and a second wiring plate 71b connected in parallel. One end of the second wiring plate 71a and the second wiring plate 71b is connected to the stationary contact plate of the stationary contact 110 via a coil, and the other end is connected to the wiring frame located in the second chamber; as shown in the attached figure. Figure 5 and Figure 8 As shown in the attached figure, the first wiring assembly 60 includes a first wiring board 61a and a first wiring board 61b. One end of the first wiring board 61a is connected to the wiring frame located in the first chamber, and the other end is connected to the second plug-in part 51a located in the first chamber. One end of the first wiring board 61b (i.e. the wiring component mentioned above) is connected to the wiring frame located in the first chamber, and the other end passes through the second through hole on the partition 30 and is connected to the second plug-in part 51b located in the second chamber.
[0053] In addition, a shunt 120 is provided between the first plug-in assembly 40 and the moving contact 100. As a result, current can flow from the first plug-in part 41a and the first plug-in part 41b into the shunt 120. Under the action of the shunt 120, part of the current flows into the contact piece 101a through a flexible connecting wire, and the other part of the current flows into the contact piece 101b through another flexible connecting wire. When the circuit breaker is closed, the moving contact 100 and the stationary contact 110 come into contact, and the current flows from the moving contact 100 into the stationary contact 110, and then from the stationary contact plate into the second wiring assembly 70. The second plug-in part 51a and the second plug-in part 51b are direct terminals, that is, the current flows directly through the first wiring plate 61a and the first wiring plate 61b to the second plug-in part 51a and the second plug-in part 51b respectively.
[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.
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.