A circuit breaker

Abstract

The utility model provides a circuit breaker relates to electrical equipment technical field. Circuit breaker includes installation shell body and sets up in first connecting conductor, vacuum bubble, second connecting conductor and contact mechanism in installation shell body. Installation shell body is provided with adjacent first installation cavity, second installation cavity and third installation cavity in proper order. First connecting conductor is set up in first installation cavity through fastener, vacuum bubble is set up in second installation cavity through fastener, second connecting conductor is set up in third installation cavity through fastener. Connect first connecting conductor and second connecting conductor with contact mechanism, not only can form conducting loop, but also realize first connecting conductor, vacuum bubble and second connecting conductor firm connection and install in installation shell body, so that circuit breaker layout is reasonable, compact and firm structure, reduces production cost and maintenance difficulty, preserves vacuum bubble excellent arc extinguishing performance and insulation capacity, enhances the applicability and reliability of circuit breaker in small and medium sized power distribution system.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a circuit breaker. Background Technology

[0002] As the core component of a vacuum circuit breaker, the vacuum bulb extinguishes the electric arc generated between the contacts during the circuit breaker's breaking operation due to the lack of conductive gas in the vacuum environment, thus achieving rapid and reliable circuit interruption. It possesses excellent arc-extinguishing performance and insulation capabilities.

[0003] Traditional vacuum circuit breakers are mostly used in high-voltage applications. To meet insulation distance requirements, they are usually large in size, with the vacuum bulb encapsulated in a solid-sealed pole to ensure mechanical strength and insulation performance, resulting in a relatively complex structure.

[0004] However, with the diversification of power distribution system requirements, new vacuum circuit breakers are gradually being applied to scenarios with relatively low voltage levels. In this context, mature components from existing air-cooled frame circuit breakers can be used to achieve a standardized and modular design, reducing manufacturing costs and improving assembly efficiency. However, since air-cooled frame circuit breakers were not originally designed with vacuum bulb installation in mind, how to rationally arrange and install vacuum bulbs has become a pressing technical problem to be solved in the structural design of this type of circuit breaker. Utility Model Content

[0005] The purpose of this utility model is to provide a circuit breaker that enables the first connecting conductor, vacuum bulb, and second connecting conductor to be stably and securely installed in the mounting housing, reducing production costs and maintenance difficulty, while retaining the excellent arc-extinguishing performance and insulation capability of the vacuum bulb, thus improving the applicability and reliability of the circuit breaker in small and medium-sized power distribution systems.

[0006] The embodiments of this utility model are implemented as follows: In a first aspect, this utility model provides a circuit breaker, comprising: The mounting housing is provided with adjacent first mounting cavity, second mounting cavity and third mounting cavity in sequence; A first connecting conductor is disposed in the first mounting cavity by fasteners; A vacuum bubble, which is mounted in the second mounting cavity by fasteners; The second connecting conductor is disposed in the third mounting cavity by fasteners; A contact mechanism is disposed inside the vacuum bubble, and both the first connecting conductor and the second connecting conductor are connected to the contact mechanism to form a conductive circuit.

[0007] In an optional embodiment, the circuit breaker further includes a first mounting member, which includes a first mounting portion and a second mounting portion connected to each other. One end of the first connecting conductor extends out of the mounting housing and is used to connect with external electronic components, and the other end is provided with a first mounting groove. The first mounting part is disposed in the first mounting groove, and the second mounting part is connected to the mounting housing.

[0008] In an optional embodiment, the first mounting component and the first connecting conductor are connected using an integral molding process.

[0009] In an optional embodiment, the circuit breaker further includes a second mounting member, which includes a third mounting portion and a fourth mounting portion connected to each other; One end of the second connecting conductor extends out of the mounting housing and is used to connect with external electronic components, and the other end is provided with a second mounting groove. The third mounting part is disposed in the second mounting groove, and the fourth mounting part is connected to the mounting housing.

[0010] In an optional embodiment, the second mounting component and the second connecting conductor are connected using an integral molding process.

[0011] In an optional embodiment, the first connecting conductor and / or the second connecting conductor may be flat or non-flat. And / or, the first connecting conductor and / or the second connecting conductor are composed of one or more segments, wherein each segment is flat or non-flat.

[0012] In an optional embodiment, the mounting housing includes a base and a base, with the base covering the base to collectively form the first mounting cavity, the second mounting cavity, and the third mounting cavity.

[0013] In an optional embodiment, both the base and the base are provided with a first groove, a second groove, and a third groove, and the first groove on the base and the base forms a first mounting cavity, the second groove forms a second mounting cavity, and the third groove forms a third mounting cavity, wherein the first groove is adapted to the shape of the first connecting conductor, the second groove is adapted to the shape of the first connecting conductor, and the third groove is adapted to the shape of the first connecting conductor.

[0014] In an optional embodiment, the circuit breaker further includes an insulating pull rod, one end of which is connected to the contact mechanism and the other end is connected to the operating mechanism to drive the contact mechanism to close or open.

[0015] In an optional embodiment, the first connecting conductor includes a first connecting segment, a flexible connecting segment, and a second connecting segment connected in sequence. The second connecting segment is connected to the moving contact of the contact mechanism. The insulating pull rod is connected to the second connecting segment and the moving contact of the contact mechanism. The first connecting segment is provided with a through hole, and the insulating pull rod is movably inserted through the through hole.

[0016] The beneficial effects of the circuit breaker provided by this utility model embodiment include: the first connecting conductor, vacuum bulb, and second connecting conductor can be securely installed in the corresponding first mounting cavity, second mounting cavity, and third mounting cavity within the mounting housing using fasteners; the contact mechanism is set inside the vacuum bulb, thereby ensuring that the arc generated when the moving contact and stationary contact separate will be naturally extinguished in a very short time; furthermore, the insulation strength of the vacuum environment provided by the vacuum bulb is much higher than that of air or other media, thus enabling higher voltage level isolation in a smaller space and reducing the size of the circuit breaker; connecting both the first and second connecting conductors to the contact mechanism not only forms a conductive circuit but also achieves a secure connection between the first connecting conductor, the vacuum bulb, and the second connecting conductor, thereby making the circuit breaker layout reasonable, compact, and stable, reducing production costs and maintenance difficulty, retaining the excellent arc-extinguishing performance and insulation capability of the vacuum bulb, and improving the applicability and reliability of the circuit breaker in small and medium-sized power distribution systems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model 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.

[0018] Figure 1 This is one of the schematic diagrams of the circuit breaker structure provided in the embodiment of this utility model; Figure 2 This is the second schematic diagram of the circuit breaker structure provided in the embodiment of this utility model; Figure 3 The third schematic diagram of the circuit breaker structure provided in this embodiment of the utility model; Figure 4 Fourth schematic diagram of the circuit breaker structure provided in this embodiment of the utility model; Figure 5 The fifth schematic diagram of the circuit breaker structure provided in this embodiment of the utility model.

[0019] Icons: 10-Circuit breaker; 100-Mounting housing; 110-First mounting cavity; 120-Second mounting cavity; 130-Third mounting cavity; 140-Base; 150-Staple; 160-First groove; 170-Second groove; 180-Third groove; 200-First connecting conductor; 210-First connecting section; 211-First mounting slot; 212-Through hole; 220-Flexible connecting section; 230-Second connecting section; 300-Vacuum bubble; 400-Second connecting conductor; 410-Second mounting slot; 500-Contact mechanism; 600-First mounting component; 610-First mounting part; 620-Second mounting part; 700-Second mounting component; 710-Third mounting part; 720-Fourth mounting part; 800-Insulating pull rod; 900-Fastener. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.

[0022] 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.

[0023] In the description of this utility model, 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 utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] 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.

[0025] In the description of this utility model, 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 the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] As the core component of a vacuum circuit breaker, the vacuum bulb extinguishes the electric arc generated between the contacts during the circuit breaker's breaking operation due to the lack of conductive gas in the vacuum environment, thus achieving rapid and reliable circuit interruption. It possesses excellent arc-extinguishing performance and insulation capabilities.

[0027] Traditional vacuum circuit breakers are mostly used in high-voltage applications. To meet insulation distance requirements, they are usually large in size, with the vacuum bulb encapsulated in a solid-sealed pole to ensure mechanical strength and insulation performance, resulting in a relatively complex structure.

[0028] However, with the diversification of power distribution system requirements, new vacuum circuit breakers are gradually being applied to scenarios with relatively low voltage levels. In this context, mature components from existing air-cooled frame circuit breakers can be used to achieve a standardized and modular design, reducing manufacturing costs and improving assembly efficiency. However, since air-cooled frame circuit breakers were not originally designed with vacuum bulb installation in mind, how to rationally arrange and install vacuum bulbs has become a pressing technical problem to be solved in the structural design of this type of circuit breaker.

[0029] Based on the problems existing in the current technology, please refer to Figures 1 to 5 This utility model provides a circuit breaker 10. By optimizing the structural design of the mounting housing 100, the first connecting conductor 200, the vacuum bulb 300, and the second connecting conductor 400 can be stably and firmly installed in the mounting housing 100, reducing production costs and maintenance difficulty, while retaining the excellent arc-extinguishing performance and insulation capability of the vacuum bulb 300, thus improving the applicability and reliability of the circuit breaker 10 in small and medium-sized power distribution systems.

[0030] In detail, the circuit breaker 10 includes a mounting housing 100 and a first connecting conductor 200, a vacuum bulb 300, a second connecting conductor 400, and a contact mechanism 500 disposed within the mounting housing 100.

[0031] The mounting housing 100 is provided with adjacent first mounting cavity 110, second mounting cavity 120 and third mounting cavity 130 in sequence.

[0032] The first connecting conductor 200 is disposed in the first mounting cavity 110 by fastener 900, the vacuum bubble 300 is disposed in the second mounting cavity 120 by fastener 900, and the second connecting conductor 400 is disposed in the third mounting cavity 130 by fastener 900. It can be understood that the fastener 900 can be a bolt or screw, etc. Therefore, the first connecting conductor 200, the vacuum bubble 300, and the second connecting conductor 400 can be securely installed in the corresponding first mounting cavity 110, second mounting cavity 120, and third mounting cavity 130 within the mounting housing 100 by fastener 900.

[0033] The contact mechanism 500 is housed within the vacuum bulb 300 to ensure that the arc generated when the moving and stationary contacts separate is extinguished naturally in a very short time. Furthermore, the vacuum environment provided by the vacuum bulb 300 has a much higher insulation strength than air or other media, thus enabling higher voltage level isolation to be achieved in a smaller space and thereby reducing the size of the circuit breaker 10.

[0034] Therefore, connecting both the first connecting conductor 200 and the second connecting conductor 400 to the contact mechanism 500 not only forms a conductive circuit, but also achieves a stable connection between the first connecting conductor 200, the vacuum bulb 300, and the second connecting conductor 400. This makes the circuit breaker 10 have a reasonable layout, a compact and stable structure, reduces production costs and maintenance difficulty, retains the excellent arc extinguishing performance and insulation capability of the vacuum bulb 300, and improves the applicability and reliability of the circuit breaker 10 in small and medium-sized power distribution systems.

[0035] Furthermore, the circuit breaker 10 also includes a first mounting component 600 and a second mounting component 700.

[0036] The first mounting component 600 includes a first mounting part 610 and a second mounting part 620 connected to each other.

[0037] One end of the first connecting conductor 200 extends out of the mounting housing 100 and is used to connect with external electronic components, and the other end is provided with a first mounting groove 211. A first mounting part 610 is provided in the first mounting groove 211, and a second mounting part 620 is connected to the mounting housing 100.

[0038] The first mounting portion 610 and the second mounting portion 620 are connected at an angle. Specifically, in this embodiment, the first mounting portion 610 and the second mounting portion 620 have an L-shaped structure. Therefore, the first mounting portion 610 is securely mounted in the first mounting groove 211 by fasteners 900, and the second mounting portion 620 is securely mounted in the mounting housing 100 by fasteners 900, thereby realizing that the first connecting conductor 200 is securely mounted in the first mounting cavity 110 of the mounting housing 100 by the first mounting member 600.

[0039] The second mounting component 700 includes a third mounting part 710 and a fourth mounting part 720 connected to each other.

[0040] One end of the second connecting conductor 400 extends out of the mounting housing 100 and is used to connect with external electronic components, and the other end is provided with a second mounting groove 410. A third mounting part 710 is provided in the second mounting groove 410, and a fourth mounting part 720 is connected to the mounting housing 100.

[0041] The third mounting portion 710 and the fourth mounting portion 720 are also connected at an angle. Specifically, in this embodiment, the third mounting portion 710 and the fourth mounting portion 720 are also L-shaped. Therefore, the third mounting portion 710 is securely mounted in the first mounting groove 211 by fastener 900, and the fourth mounting portion 720 is securely mounted in the mounting housing 100 by fastener 900, thereby realizing that the second connecting conductor 400 is securely mounted in the third mounting cavity 130 of the mounting housing 100 by the second mounting member 700.

[0042] It is worth mentioning that the first mounting component 600 and the first connecting conductor 200 can be separate structures, or they can be connected using an integral molding process; similarly, the second mounting component 700 and the second connecting conductor 400 can be separate structures, or they can be connected using an integral molding process. Adjustments can be made according to actual needs, and no specific limitations are made here.

[0043] In addition, in this embodiment, at least one of the first connecting conductor 200 and the second connecting conductor 400 is a flat plate structure, that is, the first connecting conductor 200 and the second connecting conductor 400 are copper busbar structures.

[0044] Of course, in other embodiments of this utility model, the first connecting conductor 200 and the second connecting conductor 400 may also be non-planar structures. Specifically, non-planar structures include, but are not limited to, bending, folding, or having a specific contour shape. That is, the first connecting conductor 200 and the second connecting conductor 400 may be bent, folded, or have a specific contour shape designed according to specific needs.

[0045] Furthermore, in this embodiment, at least one of the first connecting conductor 200 and the second connecting conductor 400 is a separate structure; in other words, the first connecting conductor 200 and the second connecting conductor 400 are composed of a copper busbar.

[0046] Of course, in this embodiment, the first connecting conductor 200 and the second connecting conductor 400 can also be multi-segment structures, that is, the first connecting conductor 200 and the second connecting conductor 400 are composed of multiple copper busbars connected in sequence, and each segment is flat or non-flat.

[0047] It is worth mentioning that the first connecting conductor 200 and the second connecting conductor 400 can be connected to external electronic components by means of welding, riveting, screw connection, etc.

[0048] Furthermore, the mounting housing 100 includes a base 140 and a base 150, with the base 150 covering the base 140 to jointly form a first mounting cavity 110, a second mounting cavity 120, and a third mounting cavity 130.

[0049] In this embodiment, the base 150 is assembled on the base 140 to form the mounting housing 100, which together form a first mounting cavity 110 for mounting the first connecting conductor 200, a second mounting cavity 120 for mounting the vacuum bubble 300, and a third mounting cavity 130 for mounting the second connecting conductor 400. The base 150 can also serve as an insulator.

[0050] Specifically, both the base 140 and the base 150 are provided with a first groove 160, a second groove 170 and a third groove 180. The first groove 160 on the base 140 and the base 150 forms a first mounting cavity 110, the second groove 170 forms a second mounting cavity 120 and the third groove 180 forms a third mounting cavity 130. The shape of the first groove 160 is adapted to the shape of the first connecting conductor 200, the shape of the second groove 170 is adapted to the shape of the first connecting conductor 200, and the shape of the third groove 180 is adapted to the shape of the first connecting conductor 200.

[0051] As shown in the figure, in this embodiment, both the first connecting conductor 200 and the second connecting conductor 400 are flat. Therefore, the first groove 160 and the third groove 180 are corresponding square structure grooves, the vacuum bubble 300 is cylindrical, and the second groove 170 is a corresponding arc-shaped structure groove. This allows the first connecting conductor 200, the vacuum bubble 300, and the second connecting conductor 400 to fit more closely and be more securely installed in the first groove 160, the second groove 170, and the third groove 180. By covering the base 150 on the base 140, the two opposing first grooves 160 on the base 140 and the base 150 form the first mounting cavity 110, the two opposing second grooves 170 form the second mounting cavity 120, and the two opposing third grooves 180 form the third mounting cavity 130. This achieves stable installation of the first connecting conductor 200, the vacuum bubble 300, and the second connecting conductor 400 within the mounting housing 100.

[0052] Furthermore, the circuit breaker 10 also includes an insulating pull rod 800, one end of which is connected to the contact mechanism 500, and the other end is used to connect to the operating mechanism to drive the contact mechanism 500 to close or open.

[0053] Therefore, the operating mechanism and the contact mechanism 500 are connected by an insulating rod 800 to achieve transmission, so that while the operating mechanism drives the contact mechanism 500 to close and open, insulation between the operating mechanism and the contact mechanism 500 can also be achieved, thereby improving the insulation performance of the circuit breaker 10.

[0054] Furthermore, the first connecting conductor 200 includes a first connecting segment 210, a flexible connecting segment 220, and a second connecting segment 230 connected in sequence. The second connecting segment 230 is connected to the moving contact of the contact mechanism 500. The insulating pull rod 800 is connected to the second connecting segment 230 and the moving contact of the contact mechanism 500. The first connecting segment 210 is provided with a through hole 212, and the insulating pull rod 800 is movably inserted through the through hole 212.

[0055] It should be noted that the first mounting slot 211 is located in the first connecting section 210.

[0056] In this embodiment, since the first connecting segment 210 is fixedly installed on the mounting housing 100, and the second connecting segment 230 moves synchronously with the moving contact, in order to ensure that the first connecting segment 210 and the second connecting segment 230 can maintain an electrical connection, the first connecting segment 210 and the second connecting segment 230 are connected by a flexible connecting segment 220.

[0057] By providing a through hole 212 in the first connecting section 210, the insulating pull rod 800 can be movably inserted into the through hole 212, thereby placing the moving contact and the stationary contact between the first connecting conductor 200 and the second connecting conductor 400. Therefore, the horizontal installation space of the first connecting conductor 200, the second connecting conductor 400, and the contact mechanism 500 can be reduced, thus making the overall layout of the circuit breaker 10 reasonable and the structure compact.

[0058] It is worth mentioning that the contact mechanism 500 includes a moving contact and a stationary contact. When the moving contact and stationary contact are in contact and the circuit is closed, the first connecting section 210, the second connecting section 230, the moving contact, the stationary contact, and the second connecting conductor 400 form a conductive circuit. The current directions through the first connecting section 210 and the second connecting section 230 are opposite, while the current directions through the first connecting section 210 and the second connecting conductor 400 are the same. This results in the electromagnetic forces generated by the first connecting section 210 and the second connecting section 230 being opposite, and the electromagnetic forces generated by the first connecting section 210 and the second connecting conductor 400 being the same. Consequently, the electromagnetic attraction generated by the first connecting conductor 200 and the second connecting conductor 400 acts on the moving contact and the stationary contact, thereby increasing the contact pressure between the moving contact and the stationary contact. Therefore, the larger the current through the moving contact and the stationary contact, the greater the contact pressure between them, thus solving the short-circuit withstand problem and effectively improving the short-circuit withstand capability of the circuit breaker 10.

[0059] In summary, this utility model provides a circuit breaker 10, in which the first connecting conductor 200, vacuum bulb 300, and second connecting conductor 400 can be securely installed in the corresponding first mounting cavity 110, second mounting cavity 120, and third mounting cavity 130 within the mounting housing 100 using fasteners 900; the contact mechanism 500 is disposed within the vacuum bulb 300, thereby ensuring that the arc generated when the moving contact and stationary contact separate is extinguished naturally in a very short time; furthermore, the insulation strength of the vacuum environment provided by the vacuum bulb 300 is much higher than that of air or other media, thus enabling... Achieving higher voltage isolation within a smaller space reduces the size of the circuit breaker 10. Connecting both the first connecting conductor 200 and the second connecting conductor 400 to the contact mechanism 500 not only forms a conductive circuit but also ensures a stable connection between the first connecting conductor 200, the vacuum bulb 300, and the second connecting conductor 400. This results in a reasonable layout, compact and robust structure for the circuit breaker 10, reducing production costs and maintenance difficulty. It also preserves the excellent arc-extinguishing performance and insulation capability of the vacuum bulb 300, enhancing the applicability and reliability of the circuit breaker 10 in small and medium-sized power distribution systems.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit breaker characterized by, include: The mounting housing (100) is provided with adjacent first mounting cavity (110), second mounting cavity (120) and third mounting cavity (130) in sequence. The first connecting conductor (200) is disposed in the first mounting cavity (110) by means of fasteners (900); Vacuum bubble (300), the vacuum bubble (300) is disposed in the second mounting cavity (120) by fastener (900); The second connecting conductor (400) is disposed in the third mounting cavity (130) by means of fasteners (900); A contact mechanism (500) is disposed inside the vacuum bubble (300), and the first connecting conductor (200) and the second connecting conductor (400) are both connected to the contact mechanism (500) to form a conductive circuit.

2. The circuit breaker of claim 1, wherein, The circuit breaker further includes a first mounting member (600), which includes a first mounting portion (610) and a second mounting portion (620) connected to each other. One end of the first connecting conductor (200) extends out of the mounting housing (100) and is used to connect with external electronic components, and the other end is provided with a first mounting groove (211). The first mounting part (610) is disposed in the first mounting groove (211), and the second mounting part (620) is connected to the mounting housing (100).

3. The circuit breaker of claim 2, wherein, The first mounting component (600) and the first connecting conductor (200) are connected by an integral molding process.

4. The circuit breaker according to any one of claims 1 to 3, characterized in that, The circuit breaker also includes a second mounting component (700), which includes a third mounting portion (710) and a fourth mounting portion (720) connected to each other. One end of the second connecting conductor (400) extends out of the mounting housing (100) and is used to connect with external electronic components, and the other end is provided with a second mounting groove (410). The third mounting part (710) is disposed in the second mounting groove (410), and the fourth mounting part (720) is connected to the mounting housing (100).

5. The circuit breaker of claim 4, wherein, The second mounting component (700) and the second connecting conductor (400) are connected by an integral molding process.

6. The circuit breaker of claim 1, wherein, The first connecting conductor (200) and / or the second connecting conductor (400) are flat or non-flat; And / or, the first connecting conductor (200) and / or the second connecting conductor (400) are composed of one or more segments, wherein each segment is flat or non-flat.

7. The circuit breaker of claim 1, wherein, The mounting housing (100) includes a base (140) and a base (150), the base (150) covering the base (140) to jointly form the first mounting cavity (110), the second mounting cavity (120) and the third mounting cavity (130).

8. The circuit breaker according to claim 7, characterized in that, Both the base (140) and the base (150) are provided with a first groove (160), a second groove (170) and a third groove (180). The first groove (160) on the base (140) and the base (150) form a first mounting cavity (110), the second groove (170) forms a second mounting cavity (120), and the third groove (180) forms a third mounting cavity (130). The first groove (160) is adapted to the shape of the first connecting conductor (200), the second groove (170) is adapted to the shape of the first connecting conductor (200), and the third groove (180) is adapted to the shape of the first connecting conductor (200).

9. The circuit breaker of claim 1, wherein, The circuit breaker also includes an insulating pull rod (800), one end of which is connected to the contact mechanism (500), and the other end is used to connect to the operating mechanism to drive the contact mechanism (500) to close or open.

10. The circuit breaker according to claim 9, characterized in that, The first connecting conductor (200) includes a first connecting segment (210), a flexible connecting segment (220), and a second connecting segment (230) connected in sequence. The second connecting segment (230) is connected to the moving contact of the contact mechanism (500). The insulating pull rod (800) is connected to the second connecting segment (230) and the moving contact of the contact mechanism (500). The first connecting segment (210) is provided with a through hole (212), and the insulating pull rod (800) is movably inserted through the through hole (212).

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