A circuit breaker

Abstract

The application provides a circuit breaker, comprising a shell, an incoming terminal, a solid-state circuit module, a circuit board, an operating mechanism, a release and a load terminal; the incoming terminal comprises a first input terminal and a second input terminal, the solid-state circuit module comprises an L-pole conductive part and an N-pole conductive part, the operating mechanism comprises a moving contact and a stationary contact, and the load terminal comprises a first output terminal and a second output terminal; wherein the L-pole conductive part is provided with a first extension part connected with the first input terminal and a second extension part connected with the moving contact, the N-pole conductive part is provided with a third extension part connected with the second input terminal and a fourth extension part connected with the second output terminal, and the stationary contact is provided with a conductive row connected with the first output terminal; since each module is connected by a single part, the influence of adjacent modules does not have to be considered when designing each module, and the difficulty is lower; each module can be machined and assembled respectively, and then assembled as a whole in the shell, so that the machining time is shortened.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker protection switches, and more particularly to a circuit breaker. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and can close, carry, and interrupt current under abnormal circuit conditions within a specified time.

[0003] However, the internal components of existing circuit breakers affect each other, resulting in complex structures and unreasonable spatial layouts. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the purpose of this invention is to provide a circuit breaker.

[0005] This invention provides the following technical solution:

[0006] A circuit breaker includes a housing, within which a solid-state circuit module is provided. The solid-state circuit module has an input terminal on one side along a first direction, and a mechanical switch, an operating mechanism, a trip unit, and a load terminal on the other side.

[0007] The mechanical switch is connected in series with the solid-state circuit module. The operating mechanism is located on the side of the mechanical switch facing away from the solid-state circuit module. The operating mechanism includes a long strip-shaped four-bar assembly arranged along the first direction. The trip unit and the load end are located on the same side of the four-bar assembly along the second direction, and the load end is located on the side of the trip unit facing away from the solid-state circuit module.

[0008] Wherein, the first direction is the length direction of the shell, and the second direction is the width direction of the shell.

[0009] As a further alternative to the circuit breaker, the load end includes a first output terminal, the mechanical switch includes a stationary contact, the stationary contact is connected in series with the first output terminal via a conductive busbar, and the conductive busbar is spirally wound around the trip unit.

[0010] As a further alternative to the circuit breaker, the solid-state circuit module includes a circuit board, an L-terminal conductive element, and an N-terminal conductive element, wherein the L-terminal conductive element and the N-terminal conductive element are arranged along the second direction, and both the L-terminal conductive element and the N-terminal conductive element are electrically connected to the circuit board.

[0011] As a further optional embodiment of the circuit breaker, the incoming terminal includes a first input terminal, the mechanical switch includes a moving contact, and the first input terminal, the circuit board, and the moving contact are connected in series through the L-polar conductive element.

[0012] The L-polar conductive element is located on one side of the circuit board along a third direction, which is the thickness direction of the housing.

[0013] As a further optional embodiment of the circuit breaker, the incoming terminal includes a second input terminal, the load terminal includes a second output terminal, and the second input terminal, the circuit board, and the second output terminal are connected in series through the N-pole conductive element.

[0014] The N-pole conductive element is located on one side of the circuit board along a third direction, which is the thickness direction of the housing.

[0015] As a further alternative to the circuit breaker, the first output terminal and the second output terminal are arranged along the third direction.

[0016] As a further optional embodiment of the circuit breaker, the operating mechanism further includes an operating handle, which is movably disposed within the housing and connected to the four-bar linkage assembly;

[0017] The housing has an open position and a closed position. When the operating handle is in the open position, the four-bar linkage drives the mechanical switch to open. When the operating handle is in the closed position, the four-bar linkage drives the mechanical switch to close.

[0018] As a further optional solution for the circuit breaker, the housing is also provided with a conducting position, and the open position, the closed position and the conducting position are sequentially arranged on the moving trajectory of the operating handle;

[0019] The operating mechanism also includes a limit switch, which is electrically connected to the solid-state circuit module. The limit switch is in the on position, and the solid-state circuit module controls the circuit to turn on when the operating handle triggers the limit switch.

[0020] As a further optional embodiment of the circuit breaker, the interior of the housing is provided with a partition, which divides the interior of the housing into an incoming line area, a solid-state circuit area, an operating area, a tripping area, and a load area;

[0021] The incoming line terminal is located in the incoming line area, the solid-state circuit module is located in the solid-state circuit area, the mechanical switch and the operating mechanism are located in the operating area, the trip unit is located in the tripping area, and the load terminal is located in the load area.

[0022] As a further optional embodiment of the circuit breaker, the solid-state circuit module is provided with a first epitaxial portion, a third epitaxial portion, a second epitaxial portion and a fourth epitaxial portion;

[0023] Both the first extension portion and the third extension portion extend into the incoming line area and are electrically connected to the incoming line end;

[0024] The second extension extends into the operating area and is electrically connected to the mechanical switch;

[0025] The fourth extension extends into the load region and is electrically connected to the load end.

[0026] The embodiments of the present invention have the following beneficial effects:

[0027] In the aforementioned circuit breaker, the incoming line terminal is located on one side of the solid-state circuit module along the first direction, while the mechanical switch, operating mechanism, trip unit, and load terminal are centrally located on the other side of the solid-state circuit module along the first direction. The mechanical switch is situated between the solid-state circuit module and the operating mechanism, connected in series with the solid-state circuit module and operated by the operating mechanism for opening and closing. The four-bar linkage in the operating mechanism is elongated and positioned along the first direction, while aligning with the trip unit and load terminal along the second direction. The entire circuit breaker employs a modular layout with a rational spatial arrangement.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] 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.

[0030] Figure 1 This diagram shows an overall structural schematic of a circuit breaker provided in Embodiment 1 of the present invention;

[0031] Figure 2 This diagram shows an overall structural schematic of a circuit breaker provided in Embodiment 2 of the present invention;

[0032] Figure 3 This diagram illustrates the structure of the housing in a circuit breaker according to Embodiment 2 of the present invention.

[0033] Figure 4 This diagram illustrates the structure of a solid-state circuit module in a circuit breaker according to Embodiment 2 of the present invention.

[0034] Figure 5 This diagram illustrates the relationship between the various modules and the housing in a circuit breaker according to Embodiment 2 of the present invention.

[0035] Figure 6 This invention provides a schematic diagram of the structure of each module in a circuit breaker according to Embodiment 2 of the present invention;

[0036] Figure 7 A schematic diagram of the operating mechanism in a circuit breaker according to Embodiment 2 of the present invention is shown;

[0037] Figure 8 A schematic diagram of the conductive busbar in a circuit breaker provided in Embodiment 2 of the present invention is shown.

[0038] Explanation of key component symbols:

[0039] 100 - Housing; 110 - Upper Housing; 120 - Lower Housing; 130 - Screw; 140 - Separator; 101 - Incoming Line Area; 102 - Solid State Circuit Area; 103 - Operating Area; 104 - Tripping Area; 105 - Load Area; 106 - Open Position; 107 - Closed Position; 108 - Conductive Position; 200 - Incoming Line Terminal; 210 - First Input Terminal; 220 - Second Input Terminal; 300 - Solid State Circuit Module; 310 - Circuit Board; 320 - Low-Electrode Conductor; 321 - First External... 322-Second outer extension; 330-N-pole conductive element; 331-Third outer extension; 332-Fourth outer extension; 400-Mechanical switch; 410-Moving contact; 420-Stationary contact; 421-Conductive busbar; 421a-Spiral segment; 421b-Outer extension segment; 500-Operating mechanism; 510-Operating handle; 520-Four-bar linkage assembly; 530-Limit switch; 600-Trip unit; 700-Load end; 710-First output terminal; 720-Second output terminal. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Example 1

[0046] Please see Figure 1 This embodiment provides a circuit breaker, including a housing 100, an incoming terminal 200, a solid-state circuit module 300, a mechanical switch 400, an operating mechanism 500, a trip unit 600, and a load terminal 700, wherein the incoming terminal 200, the solid-state circuit module 300, the mechanical switch 400, the operating mechanism 500, the trip unit 600, and the load terminal 700 are all disposed within the housing 100.

[0047] Specifically, the shell 100 is rectangular. The length direction of the shell 100 is designated as the first direction, indicated by the x-direction in the figure. The width direction of the shell 100 is designated as the second direction, indicated by the y-direction in the figure.

[0048] Specifically, the input terminal 200 is located on one side of the solid-state circuit module 300 along the first direction, while the mechanical switch 400, operating mechanism 500, trip unit 600 and load terminal 700 are located on the other side of the solid-state circuit module 300 along the first direction.

[0049] The mechanical switch 400 is located between the solid-state circuit module 300 and the operating mechanism 500. The mechanical switch 400 is connected in series with the solid-state circuit module 300 and is opened and closed under the control of the operating mechanism 500.

[0050] The operating mechanism 500 includes a long, strip-shaped four-bar assembly 520 arranged along a first direction. The trip unit 600 and the load end 700 are located on the same side of the four-bar assembly 520 along a second direction, and the load end 700 is located on the side of the trip unit 600 facing away from the solid-state circuit module 300.

[0051] Therefore, the entire circuit breaker adopts a modular layout with compact internal components, making full use of the space inside the casing 100, resulting in a reasonable spatial layout.

[0052] Example 2

[0053] Please see Figure 2 This embodiment provides a circuit breaker, specifically a solid-state circuit breaker. The circuit breaker comprises a housing 100, an incoming line terminal 200, a solid-state circuit module 300, a mechanical switch 400, an operating mechanism 500, a trip unit 600, and a load terminal 700. The incoming line terminal 200, the solid-state circuit module 300, the mechanical switch 400, the operating mechanism 500, the trip unit 600, and the load terminal 700 are all mounted on the housing 100.

[0054] Please refer to the following: Figure 2 and Figure 3 Specifically, the shell 100 is rectangular. The length direction of the shell 100 is designated as the first direction, illustrated by the x-direction in the figure. The width direction of the shell 100 is designated as the second direction, illustrated by the y-direction in the figure. The thickness direction of the shell 100 is designated as the third direction, illustrated by the z-direction in the figure.

[0055] The housing 100 consists of an upper housing 110 and a lower housing 120. The upper housing 110 and the lower housing 120 are arranged along a third direction and are connected by screws 130.

[0056] Multiple partitions 140 are provided on the inner wall of the housing 100. The partitions 140 are arranged parallel to a third direction, and the partitions 140 are provided on both the upper housing 110 and the lower housing 120. The lower housing 120 is shown in the figure.

[0057] Multiple partitions 140 divide the interior of the housing 100 into several regions, including an input area 101, a solid-state circuit area 102, an operating area 103, a tripping area 104, and a load area 105. Accordingly, the input terminal 200 is located in the input area 101, the solid-state circuit module 300 is located in the solid-state circuit area 102, the mechanical switch 400 and the operating mechanism 500 are located in the operating area 103, the trip unit 600 is located in the tripping area 104, and the load terminal 700 is located in the load area 105.

[0058] In this embodiment, the input area 101 is located on one side of the solid-state circuit area 102 along the first direction, and the operation area 103, the tripping area 104, and the load area 105 are all located on the other side of the solid-state circuit area 102 along the first direction. Furthermore, the tripping area 104 and the load area 105 are arranged along the first direction, with the load area 105 located on the side of the tripping area 104 facing away from the solid-state circuit area 102. The operation area 103 is elongated and aligned with both the load area 105 and the tripping area 104, and is located on one side of the tripping area 104 and the load area 105 along the second direction.

[0059] Specifically, the input terminal 200 includes a first input terminal 210 and a second input terminal 220.

[0060] The first input terminal 210 and the second input terminal 220 are arranged along the second direction, with the first input terminal 210 opposite to the operation area 103 and the second input terminal 220 opposite to the tripping area 104 and the load area 105.

[0061] Please see Figure 4 Specifically, the solid-state circuit module 300 includes a circuit board 310, an L-terminal conductive element 320, and an N-terminal conductive element 330.

[0062] Please refer to the following: Figure 5 and Figure 6 The L-polar conductive element 320 and the N-polar conductive element 330 are arranged along the second direction, with the L-polar conductive element 320 adjacent to the first input terminal 210 and the N-polar conductive element 330 adjacent to the second input terminal 220.

[0063] The L-polar conductive element 320 is disposed along a first direction. One end of the L-polar conductive element 320 along the first direction has a first extension portion 321, and the other end of the L-polar conductive element 320 along the first direction has a second extension portion 322. The first extension portion 321 passes through the separator 140, extends into the inlet area 101, and connects to the first input terminal 210. The second extension portion 322 passes through the separator 140 and extends into the operation area 103.

[0064] Similarly, the N-pole conductive element 330 is disposed along the first direction. One end of the N-pole conductive element 330 along the first direction has a third extension portion 331, and the other end of the N-pole conductive element 330 along the first direction has a fourth extension portion 332. The third extension portion 331 passes through the separator 140, extends into the input area 101, and connects to the second input terminal 220. The fourth extension portion 332 passes through the separator 140 and extends into the load area 105. Thus, the second input terminal 220 is connected to the load terminal 700 in the load area 105 via the N-pole conductive element 330.

[0065] Please refer to it again. Figure 4Specifically, circuit board 310 is located on one side of L-terminal conductive element 320 and N-terminal conductive element 330 along a third direction, and circuit board 310 is soldered to both L-terminal conductive element 320 and N-terminal conductive element 330. In addition, circuit board 310 is also electrically connected to trip unit 600.

[0066] Please see Figure 6 Specifically, the mechanical switch 400 consists of a moving contact 410 and a stationary contact 420.

[0067] The moving contact 410 is connected to the second extension 322 extending to the operating area 103, and the first input terminal 210, the circuit board 310 and the moving contact 410 are connected in series through the L-polar conductive element 320.

[0068] The stationary contact 420 is provided with a conductive bar 421, which passes through the separator 140 and extends into the load area 105. When the moving contact 410 contacts the stationary contact 420 and conducts electricity, the first input terminal 210 is connected to the load terminal 700 in the load area 105 through the circuit board 310, the L-polar conductive element 320, the moving contact 410, and the stationary contact 420.

[0069] Please see Figure 7 Specifically, the operating mechanism 500 includes an operating handle 510, a four-bar linkage 520, and a limit switch 530. The operating handle 510 is connected to the moving contact 410 via the four-bar linkage 520, and the operating handle 510 is linked with the limit switch 530, which is electrically connected to the circuit board 310.

[0070] The operating handle 510 is movably mounted on the housing 100, which has corresponding open position 106, closed position 107, and closed position 108. The open position 106, closed position 107, and closed position 108 are sequentially arranged on the movement path of the operating handle 510. The limit switch 530 is located in the closed position 108.

[0071] When the operating handle 510 moves from the open position 106 to the closed position 107, it drives the moving contact 410 to engage with the stationary contact 420 via the four-bar linkage assembly 520. When the operating handle 510 moves further from the closed position 107 to the closed position 108, the moving contact 410 remains unchanged, and the operating handle 510 triggers the limit switch 530. The limit switch 530 sends a feedback signal to the circuit board 310, and the control circuit of the circuit board 310 is turned on.

[0072] When the operating handle 510 moves from the ON position 108 to the OFF position 107, it disengages from the limit switch 530. The limit switch 530 also sends a feedback signal to the circuit board 310, causing the control circuit of the circuit board 310 to disconnect. At this time, the moving contact 410 remains in contact with the stationary contact 420. When the operating handle 510 moves further from the OFF position 107 to the OFF position 106, the four-bar linkage 520 drives the moving contact 410 to separate from the stationary contact 420.

[0073] For the mechanical switch 400 composed of the moving contact 410 and the stationary contact 420, it closes before the circuit is turned on and opens after the circuit is turned off, thus achieving true arc-free interruption. Since no electric arc is generated, the moving contact 410 and the stationary contact 420 do not need to be designed to be very large, which can effectively save space.

[0074] In addition, the four-bar linkage 520 is elongated, which matches the elongated operating area 103, making the layout more reasonable.

[0075] In this embodiment, the operating handle 510 is slidably disposed on the housing 100 along the first direction.

[0076] In another embodiment of this application, the operating handle 510 may also be rotatably mounted on the housing 100 and driven by gears and slide bars.

[0077] Please see Figure 8 Furthermore, the conductive bus 421 passes through the tripping area 104 and enters the load area 105, and the conductive bus 421 is arranged in a spiral shape around the trip unit 600 within the tripping area 104.

[0078] When a short-circuit current occurs, the spiral-shaped conductive bar 421 generates an induced magnetic field, which drives the moving iron core in the trip unit 600 to push out. The moving iron core acts on the latch in the four-bar linkage assembly 520, causing the moving contact 410 to separate from the stationary contact 420.

[0079] The conductive busbar 421 is made into a spiral shape, so that it can function as both a conductor and a tripping coil, thereby achieving a more reasonable spatial layout.

[0080] Please refer to it again. Figure 6 Specifically, the load terminal 700 includes a first output terminal 710 and a second output terminal 720.

[0081] The first output terminal 710 and the second output terminal 720 are arranged along a third direction, and the first output terminal 710 is connected to the conductive bus 421 extending to the load area 105. Thus, the first input terminal 210 is connected to the first output terminal 710 when the moving contact 410 and the stationary contact 420 are closed. Furthermore, the second output terminal 720 is connected to the fourth extension 332 extending to the load area 105, and the second input terminal 220, the circuit board 310, and the second output terminal 720 are connected in series via the N-pole conductive element 330.

[0082] In the aforementioned circuit breaker, the L-polar conductive element 320 of the solid-state circuit module 300 is connected to the first input terminal 210 of the input terminal 200 via a first extension portion 321, and to the moving contact 410 of the mechanical switch 400 via a second extension portion 322. The N-polar conductive element 330 of the solid-state circuit module 300 is connected to the second input terminal 220 of the input terminal 200 via a third extension portion 331, and to the second output terminal 720 of the load terminal 700 via a fourth extension portion 332. The stationary contact 420 of the mechanical switch 400 is connected to the first output terminal 710 of the load terminal 700 via a conductive bus 421.

[0083] Since the solid-state circuit module 300 is connected to the input terminal 200, the solid-state circuit module 300 is connected to the mechanical switch 400, the solid-state circuit module 300 is connected to the load terminal 700, and the mechanical switch 400 is connected to the load terminal 700 by a single component (first extension 321, second extension 322, third extension 331, fourth extension 332 and busbar 421), the correlation between them is low. Therefore, when designing each module, it is not necessary to consider the influence of adjacent modules too much, and it is easier to adjust, replace or optimize some or all modules.

[0084] Furthermore, the first extension portion 321, the second extension portion 322, the third extension portion 331, and the fourth extension portion 332 are all arranged parallel to the third direction and are assembled in the housing 100 along the third direction. Therefore, the solid-state circuit module 300 and the input terminal 200, as well as the solid-state circuit module 300 and the mechanical switch 400, do not affect each other during the assembly process.

[0085] The structure in the solid-state circuit module 300 is not directly connected to the structure in the trip unit 600, so the solid-state circuit module 300 and the trip unit 600 do not affect each other during the assembly process.

[0086] The conductive busbar 421 is divided into a helical segment 421a and an extension segment 421b. The helical segment 421a is wound around the trip unit 600, with one end overlapping the stationary contact 420 along a third direction, and the other end parallel to the third direction. The extension segment 421b is also parallel to the third direction and is assembled within the housing 100 along that direction. Therefore, by assembling the helical segment 421a and the trip unit 600 together beforehand, the mechanical switch 400 and the trip unit 600, as well as the trip unit 600 and the load terminal 700, will not interfere with each other during assembly.

[0087] In summary, the entire circuit breaker adopts a modular layout with compact internal components, making full use of the space inside the casing and resulting in a rational spatial arrangement. Furthermore, during the circuit breaker's production process, each module can be processed and assembled separately, and then the entire unit is assembled within the casing 100, thereby shortening processing time.

[0088] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0089] 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.

[0090] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A circuit breaker, characterized in that, The device includes a housing, within which a solid-state circuit module is provided. The solid-state circuit module has an input terminal on one side along a first direction, and a mechanical switch, an operating mechanism, a trip unit, and a load terminal on the other side. The housing has an internal partition that separates the interior of the housing to form an inlet area, a solid-state circuit area, an operating area, a tripping area, and a load area. The inlet terminal is located in the inlet area, the solid-state circuit module is located in the solid-state circuit area, the mechanical switch and the operating mechanism are located in the operating area, the tripping device is located in the tripping area, and the load terminal is located in the load area. The solid-state circuit module includes a first epitaxial portion, a third epitaxial portion, a second epitaxial portion, and a fourth epitaxial portion. The first epitaxial portion and the third epitaxial portion both extend into the input area and are electrically connected to the input terminal. The second epitaxial portion extends into the operating area and is electrically connected to the mechanical switch. The fourth epitaxial portion extends into the load area and is electrically connected to the load terminal. The first epitaxial portion, the second epitaxial portion, the third epitaxial portion, and the fourth epitaxial portion are all arranged parallel to a third direction and are assembled in the housing along the third direction. The mechanical switch is connected in series with the solid-state circuit module. The operating mechanism is located on the side of the mechanical switch facing away from the solid-state circuit module. The operating mechanism includes a long, four-bar linkage assembly arranged along the first direction. The trip unit and the load end are located on the same side of the four-bar linkage assembly along the second direction, and the load end is located on the side of the trip unit facing away from the solid-state circuit module. The load end is adjacent to the trip unit and includes a first output terminal. The mechanical switch includes a stationary contact, which is connected in series with the first output terminal via a conductive busbar. The conductive busbar is spirally wound around the trip unit and is divided into a spiral segment and an extension segment. The spiral segment is wound around the trip unit, with one end of the spiral segment overlapping the stationary contact along the third direction and the other end of the spiral segment being parallel to the third direction. The extension segment is also parallel to the third direction and is assembled in the housing along the third direction. Wherein, the first direction is the length direction of the shell, the second direction is the width direction of the shell, and the third direction is the thickness direction of the shell.

2. The circuit breaker according to claim 1, characterized in that, The solid-state circuit module includes a circuit board, an L-terminal conductive element, and an N-terminal conductive element. The L-terminal conductive element and the N-terminal conductive element are arranged along the second direction, and both the L-terminal conductive element and the N-terminal conductive element are electrically connected to the circuit board.

3. The circuit breaker according to claim 2, characterized in that, The input terminal includes a first input terminal, the mechanical switch includes a moving contact, and the first input terminal, the circuit board, and the moving contact are connected in series through the L-polar conductive element. The L-polar conductive element is located on one side of the circuit board along the third direction.

4. The circuit breaker according to claim 2, characterized in that, The input terminal includes a second input terminal, and the load terminal includes a second output terminal. The second input terminal, the circuit board, and the second output terminal are connected in series through the N-pole conductive element. The N-pole conductive element is located on one side of the circuit board along a third direction, which is the thickness direction of the housing.

5. The circuit breaker according to claim 4, characterized in that, The load terminal also includes a first output terminal, and the first output terminal and the second output terminal are arranged along the third direction.

6. The circuit breaker according to claim 1, characterized in that, The operating mechanism further includes an operating handle, which is movably disposed in the housing and connected to the four-bar linkage assembly; The housing has an open position and a closed position. When the operating handle is in the open position, the four-bar linkage drives the mechanical switch to open. When the operating handle is in the closed position, the four-bar linkage drives the mechanical switch to close.

7. The circuit breaker according to claim 6, characterized in that, The housing is also provided with a conducting position, and the open position, the closed position and the conducting position are sequentially arranged on the moving trajectory of the operating handle; The operating mechanism also includes a limit switch, which is electrically connected to the solid-state circuit module. The limit switch is in the on position, and the solid-state circuit module controls the circuit to turn on when the operating handle triggers the limit switch.

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