Interpolar parallel assembly and circuit breaker

Abstract

The embodiment of the utility model provides an interelectrode parallel assembly and a circuit breaker. The interelectrode parallel connection assembly comprises a first wiring terminal; the plurality of static contacts are respectively connected to the first wiring terminals; the plurality of moving contacts are suitable for being connected and disconnected with the corresponding static contacts; the bus piece comprises a bus part, a second wiring terminal and a plurality of connecting parts, one end of each connecting part in the plurality of connecting parts is connected to the bus part, the other end of each connecting part in the plurality of connecting parts is connected to the second wiring terminal, and the bus part is connected to the plurality of moving contacts; wherein the first wiring terminal is suitable for being connected to one of an external load and an external power supply, and the second wiring terminal is suitable for being connected to the other of the external load and the external power supply.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the field of electrical equipment technology, and more specifically, to inter-pole parallel components and circuit breakers. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. With the rapid development of new energy and data center applications, the demand for circuit breakers with high current-carrying capacity is increasing in these fields.

[0003] However, traditional methods for increasing current-carrying capacity require significant modifications to the circuit breaker platform, leading to issues such as increased costs and size, and even affecting the compatibility of the original platform. Therefore, it is necessary to improve the current-carrying capacity of circuit breakers with limited modifications. Utility Model Content

[0004] In a first aspect of this disclosure, an inter-pole parallel connection assembly is provided, comprising: a first terminal block; a plurality of stationary contacts respectively connected to the first terminal block; a plurality of moving contacts adapted to connect and disconnect with corresponding stationary contacts; a busbar including a bus section, a second terminal block, and a plurality of connecting portions, one end of each of the plurality of connecting portions being connected to the bus section, the other end of each of the plurality of connecting portions being connected to the second terminal block, and the bus section being connected to the plurality of moving contacts, wherein the first terminal block is adapted to connect to one of an external load and an external power source, and the second terminal block is adapted to connect to the other of the external load and the external power source.

[0005] According to embodiments of this disclosure, a first terminal block, multiple stationary contacts, multiple moving contacts, and a busbar are connected to form a single pole to improve the current-carrying capacity of the circuit breaker. Furthermore, the busbar can combine current through a busbar section and pass it through multiple connection sections to achieve a relatively balanced current distribution across the multiple connection sections, thereby reducing the impact of contact resistance differences on the inter-pole current distribution.

[0006] In some embodiments, the busbar, the second terminal block, and the plurality of connecting parts are integrally formed.

[0007] In some embodiments, at least one of the plurality of connecting portions is provided with a bimetallic strip, and at least another of the plurality of connecting portions other than the at least one connecting portion is provided with a magnetic deactivation unit.

[0008] In some embodiments, each of the plurality of connecting portions includes a first portion, a second portion, and a bend disposed between the first portion and the second portion, the first portion being connected to the busbar and the second portion being connected to the second terminal.

[0009] In some embodiments, the bimetallic strip and the magnetic deactivation unit are respectively disposed on the second portion of the corresponding connecting portion.

[0010] In some embodiments, the inter-pole parallel assembly further includes a first adapter bar, and the first terminal block is adapted to be connected via the first adapter bar to one of the external load and the external power supply.

[0011] In some embodiments, the inter-pole parallel assembly further includes a second adapter bar, and the second terminal block is adapted to be connected via the second adapter bar to another of the external load and the external power supply.

[0012] In some embodiments, the second terminal block is divided into multiple portions, and each portion of the second terminal block is connected to a corresponding connection portion.

[0013] In a second aspect of this disclosure, a circuit breaker is provided, comprising: any of the inter-pole parallel components according to a first aspect of this disclosure.

[0014] In some embodiments, the circuit breaker further includes a second module, the second module including the inter-pole parallel assembly of the above embodiments.

[0015] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0016] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0017] Figure 1 and Figure 2 A schematic diagram of the structure of a circuit breaker, an external load, and an external power supply according to some embodiments of the present disclosure is shown;

[0018] Figure 3 A partial structural schematic diagram of a circuit breaker according to some embodiments of the present disclosure is shown;

[0019] Figure 4Schematic diagrams of the busbar, bimetallic strip, and magnetic deactivation unit according to some embodiments of the present disclosure are shown;

[0020] Figure 5 It shows Figure 3 The diagram shows a partial structural schematic of the circuit breaker, which illustrates the first and second transition bars.

[0021] Figure 6 A partial structural schematic diagram of a circuit breaker according to some other embodiments of the present disclosure is shown;

[0022] Figure 7 It shows Figure 6 The diagram shows a partial structural schematic of the circuit breaker, which illustrates the first and second transition bars.

[0023] Figure 8 A schematic diagram of the circuit breaker, external load, and external power supply according to other embodiments of the present disclosure is shown.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100 represents the inter-pole parallel component; 200 represents the external load; 300 represents the external power supply.

[0026] 1 is the first terminal block; 2 is the stationary contact; 3 is the moving contact;

[0027] 4 is a busbar, 41 is a busbar section, 42 is a second terminal block, 43 is a connecting section, 431 is a first part, 432 is a second part, and 433 is a bending part;

[0028] 51 is the first adapter row, 52 is the second adapter row, 531 is the third part, 5311 is the terminal hole, 532 is the fourth part, 5321 is the wiring hole, and 533 is the transition part;

[0029] 61 is a bimetallic strip, and 62 is a magnetic desorption unit. Detailed Implementation

[0030] Embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0031] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0032] As described above, the demand for circuit breakers with high current-carrying capacity is increasing in the new energy and data center application fields. However, traditional design methods for increasing current-carrying capacity require significant modifications to the circuit breaker platform. Therefore, it is necessary to improve the current-carrying capacity of the circuit breaker with limited modifications, such as connecting adjacent poles into one pole. However, due to the difference in contact resistance between the moving and stationary contacts of adjacent poles, the current distribution between adjacent poles becomes unbalanced. Based on this, embodiments of this disclosure provide an inter-pole parallel connection component and a circuit breaker to at least partially solve the above problems. In the following, in conjunction with Figures 1 to 8 The principles of this disclosure are described.

[0033] Figure 1 and Figure 2 A schematic diagram of the circuit breaker, external load 200, and external power supply 300 according to some embodiments of the present disclosure is shown. Figure 3 A partial structural schematic diagram of a circuit breaker according to some embodiments of the present disclosure is shown. For example... Figures 1 to 3 As shown, the circuit breaker includes a pair of pole parallel assemblies 100. Each pole parallel assembly 100 includes a first terminal 1, a plurality of moving contacts 3, a plurality of stationary contacts 2, and a busbar 4.

[0034] Return to reference Figures 1 to 3 In some embodiments, multiple stationary contacts 2 are respectively connected to the first terminal 1. Multiple moving contacts 3 are adapted to connect and disconnect with corresponding stationary contacts 2 to realize opening and closing operations.

[0035] Figure 4 A schematic diagram of the structure of the busbar 4, bimetallic strip 61, and magnetic deactivation unit 62 according to some embodiments of the present disclosure is shown. Figures 1 to 4 As shown, in some embodiments, the busbar 4 includes a bus section 41, a second terminal block 42, and a plurality of connecting parts 43. One end of each of the plurality of connecting parts 43 is connected to the bus section 41. The other end of each of the plurality of connecting parts 43 is connected to the second terminal block 42. The bus section 41 is connected to a plurality of moving contacts 3, for example, by means of a flexible wire.

[0036] Return to reference Figure 1 and Figure 3 In some embodiments, the first terminal 1 can be connected to one of the external load 200 and the external power supply 300. The second terminal 42 can be connected to the other of the external load 200 and the external power supply 300. For example, in Figure 1 and Figure 2 In this example, the first terminal 1 can be connected to an external power supply 300, and the second terminal 42 can be connected to an external load 200. Of course, in other embodiments, the first terminal 1 can also be connected to an external load 200, and the second terminal 42 can also be connected to an external power supply 300.

[0037] According to an embodiment of the present disclosure, the inter-electrode parallel assembly 100 connects a first terminal 1, a plurality of stationary contacts 2, a plurality of moving contacts 3, and a busbar 4 to form a single pole, thereby improving the current-carrying capacity of the circuit breaker. Furthermore, the busbar 4 can combine current through a busbar 41 and shunt current through a plurality of connection portions 43, so that the current distribution on the plurality of connection portions 43 is relatively balanced, thereby reducing the influence of contact resistance differences on the inter-electrode current distribution.

[0038] Furthermore, the busbar 4 can also re-converge current through the second terminal 42, which helps to shorten the conductive path and makes the current distribution on the multiple connection parts 43 relatively balanced. The circuit breaker according to the embodiments of this disclosure can also eliminate the need for an external connection bar, which helps to reduce product costs.

[0039] If the busbar 41 and the second terminal 42 are connected to multiple connection parts 43 by bolts, the bolted connection is prone to differences in contact resistance, resulting in an unbalanced current distribution on the multiple connection parts 43. Based on this, refer to Figure 3 and Figure 4 In some embodiments, the busbar 41, the second terminal 42, and the plurality of connecting portions 43 can be integrally formed. Compared to bolted connections, the inter-electrode parallel assembly 100 according to embodiments of the present disclosure is advantageous in reducing the impact of differences in contact resistance on the inter-electrode current distribution.

[0040] The inter-pole parallel assembly 100 can achieve two-stage, three-stage, and four-stage parallel connections. (See reference) Figure 1 In some embodiments, the busbar 4 may include three connecting portions 43. Correspondingly, the number of stationary contacts 2 and moving contacts 3 may also be three. (Return to Reference) Figure 2 In some embodiments, the busbar 4 may further include two connecting portions 43. Correspondingly, the number of stationary contacts 2 and moving contacts 3 may also be two. In some embodiments, the busbar 4 may further include four connecting portions 43. Correspondingly, the number of stationary contacts 2 and moving contacts 3 may also be four. It can be understood that the circuit breaker according to the embodiments of this disclosure can flexibly set the number of connecting portions 43, stationary contacts 2, and moving contacts 3 according to the current carrying capacity.

[0041] Continue to refer to Figures 1 to 4 In some embodiments, since the current distribution on the multiple connection portions 43 is relatively balanced, at least one of the multiple connection portions 43 may be provided with a bimetallic strip 61. At least one other connection portion 43 besides the first one may be provided with a magnetic de-energizing unit 62. That is, the number of bimetallic strips 61 and magnetic de-energizing units 62 is at least one, and the bimetallic strips 61 and magnetic de-energizing units 62 are not provided on the same connection portion 43. This approach helps improve the stability of the magnetic de-energizing current threshold. Furthermore, it can improve the accuracy of the magnetic de-energizing current threshold, thereby reducing the difference between the magnetic de-energizing current threshold and the actual magnetic de-energizing current during use, thus avoiding premature or delayed magnetic de-energizing and helping to maintain the continuity of power supply to the data center. In addition, since it is not necessary to provide a bimetallic strip 61 and a magnetic de-energizing unit 62 on each connection portion 43, the number of bimetallic strips 61 and magnetic de-energizing units 62 on each inter-pole parallel assembly 100 can be reduced, which helps to save costs. For example, when the inter-pole parallel assembly implements two-stage parallel connection, refer to... Figure 2 The busbar 4 includes two connecting parts 43, one of which may be provided with a bimetallic strip 61. The other connecting part 43 may be provided with a magnetic deactivation unit 62. When the inter-pole parallel assembly achieves three-stage parallel connection, refer to... Figure 1 The busbar 4 includes three connecting parts 43, two of which may be provided with bimetallic strips 61. The other connecting part 43 may be provided with a magnetic deactivation unit 62.

[0042] According to the embodiments of this disclosure, the bimetallic strip 61 and magnetic release unit 62 can realize thermal and magnetic release functions in any manner, and the embodiments of this disclosure are not limited in this regard. For example, when an overload current flows through the main circuit for a long time, the heat generated by the main circuit is transferred to the bimetallic strip 61 and deforms the bimetallic strip 61. During the deformation of the bimetallic strip 61, the bimetallic strip 61 can contact the release rod and push the release rod to rotate, thereby unlocking the linkage structure and allowing the moving contact 3 to move away from the stationary contact 2 to realize the thermal release process. For example, when a short-circuit current flows through the conductor of the main circuit, the magnetic field generated by the conductor forms a magnetic circuit through the moving and stationary iron cores. Under the action of electromagnetic force, the moving iron core can rotate around the axis toward the stationary iron core. During the rotation of the moving iron core, the moving iron core can contact the release rod and push the release rod to rotate, thereby unlocking the linkage structure and allowing the moving contact 3 to move away from the stationary contact 2 to realize the magnetic release process.

[0043] Continue to refer to Figures 1 to 4In some embodiments, each of the plurality of connecting portions 43 may include a first portion 431, a second portion 432, and a bend 433 disposed between the first portion 431 and the second portion 432. The first portion 431 may be connected to the busbar 41. The second portion 432 may be connected to the second terminal 42. In this way, the connecting portions 43 can form a large-sized structure within a limited space, facilitating the installation of the bimetallic strip 61 and the magnetic deactivation unit 62. Further, the bimetallic strip 61 and the magnetic deactivation unit 62 may be respectively disposed on the second portion 432 of the corresponding connecting portion 43.

[0044] It should be understood that in other embodiments, the connecting portion 43 may also include any other suitable structure for mounting the bimetallic strip 61 and the magnetic deactivation unit 62. In other embodiments, the connecting portion 43 may also be a straight structure. It is understood that the structure of the connecting portion 43 depends primarily on the distance between the busbar 41 and the second terminal 42. For example, when the distance between the busbar 41 and the second terminal 42 is small, the connecting portion 43 may be bent to save space. When the distance between the busbar 41 and the second terminal 42 is large, the connecting portion 43 may be straight.

[0045] Continue to refer to Figure 4 In some embodiments, since the busbar 4 is integrally formed, the thicknesses of the busbar 41, the second terminal 42, and the plurality of connecting portions 43 can all be equal. Furthermore, the thickness and width of each connecting portion 43 can be equal to ensure that the current-carrying cross-sectional area of ​​the plurality of connecting portions 43 is equal, thereby allowing the same current to pass through the plurality of connecting portions 43, and thus making the current distribution on the plurality of connecting portions 43 relatively balanced.

[0046] Continue to refer to Figure 4 In some embodiments, the bus 4 may include a copper bus 4. Copper has excellent conductivity, which can largely avoid the problem of unbalanced current distribution between electrodes caused by contact resistance.

[0047] Figure 5 It shows Figure 3 The diagram shows a partial structural schematic of the circuit breaker, illustrating the first transition bar 51 and the second transition bar 52. (See diagram for reference.) Figure 2 , Figure 3 as well as Figure 5As shown, in some embodiments, the first terminal block 1 can be connected to the first transition bus 51 and is adapted to be connected via the first transition bus 51 to one of the external load 200 and the external power supply 300. The second terminal block 42 can be connected to the second transition bus 52 and is adapted to be connected via the second transition bus 52 to the other of the external load 200 and the external power supply 300. The first transition bus 51 and the second transition bus 52 are used to transition between external wiring or connection terminals in different directions, thereby changing the wiring method of the circuit breaker.

[0048] Continue to refer to Figure 5 In some embodiments, the first adapter bar 51 and the second adapter bar 52 have the same structure. The first adapter bar 51 and the second adapter bar 52 can be bent and may include a third portion 531, a fourth portion 532, and a transition portion 533 disposed between the third portion 531 and the fourth portion 532. The third portion 531 and the fourth portion 532 may be perpendicular to each other. The third portion 531 of the first adapter bar 51 can be connected to the first terminal block 1. The third portion 531 of the second adapter bar 52 can be connected to the second terminal block 42. The fourth portion 532 is used for external wiring, thereby connecting to an external power supply 300 or an external load 200.

[0049] Continue to refer to Figure 5 Furthermore, since the first terminal 1 and the second terminal 42 are not separated, a terminal hole 5311 can be provided on the third part 531 for connection to the first terminal 1 or the second terminal 42. A wiring hole 5321 can be provided on the fourth part for external wiring.

[0050] Figure 6 A partial structural schematic diagram of a circuit breaker according to some other embodiments of the present disclosure is shown. Figure 7 It shows Figure 6 The diagram shows a partial structural schematic of the circuit breaker, which illustrates the first transition bar 51 and the second transition bar 52.

[0051] like Figure 6 and Figure 7 As shown, due to the merging effect of the first transition busbar 51 and the second transition busbar 52, the first terminal 1 and the second terminal 42 can each be divided into multiple parts. Each of the multiple parts of the first terminal 1 is connected to a corresponding stationary contact 2. Each of the multiple parts of the second terminal 42 is connected to a corresponding connection part 43. This arrangement facilitates the expansion of the circuit breaker's application scenarios.

[0052] Continue to refer to Figure 6 and Figure 7Furthermore, each third part 531 may be provided with multiple terminal holes 5311 for connection to multiple parts of the first terminal 1 or multiple parts of the second terminal 42. Similarly, the fourth part 532 may be provided with a wiring hole 5321 for external wiring.

[0053] Figure 8 A schematic diagram of the circuit breaker and external load 200 and external power supply 300 according to other embodiments of the present disclosure is shown. Figure 8 The circuit breaker shown is Figures 1 to 2 The circuit breakers shown have similar structures; the main difference lies in... Figure 8 The circuit breaker in the circuit consists of only one inter-pole parallel component 100.

[0054] like Figure 8 As shown, the inter-pole parallel assembly 100 described herein also includes a first terminal block 1, multiple moving contacts 3, multiple stationary contacts 2, a busbar 4, a bimetallic strip 61, and a magnetic deactivation unit 62. The structure of the first terminal block 1, multiple moving contacts 3, multiple stationary contacts 2, busbar 4, bimetallic strip 61, and magnetic deactivation unit 62 is the same as described above. Figures 1 to 2 The structures described are similar and will not be repeated here.

[0055] According to an embodiment of the present disclosure, the inter-electrode parallel assembly 100 connects a first terminal 1, a plurality of stationary contacts 2, a plurality of moving contacts 3, and a busbar 4 to form a single pole, thereby improving the current-carrying capacity of the circuit breaker. Furthermore, the busbar 4 can combine current through a busbar 41 and shunt current through a plurality of connection portions 43, so that the current distribution on the plurality of connection portions 43 is relatively balanced, thereby reducing the influence of contact resistance differences on the inter-electrode current distribution.

[0056] Furthermore, the busbar 4 can also re-converge current through the second terminal 42, which helps to shorten the conductive path and makes the current distribution on the multiple connection parts 43 relatively balanced. In addition, the circuit breaker according to the embodiments of this disclosure can also eliminate the need for an external connection bar, which helps to reduce product costs.

[0057] In summary, the current-carrying capacity of the circuit breaker according to the embodiments of this disclosure is significantly improved, and the threshold stability and accuracy of the magnetic tripping are also significantly improved. Furthermore, the cost of the circuit breaker is controlled.

[0058] refer to Figure 8 Embodiments of this disclosure also provide a circuit breaker including a first module, the first module including any of the inter-pole parallel components 100 as described above.

[0059] Continue to refer to Figure 8In some embodiments, the first terminal 1 of the first module can be connected to the positive output terminal of the external power supply 300, and the second terminal 42 of the first module can be connected to one end of the external load 200.

[0060] In other embodiments, the first terminal 1 of the first module can be connected to the negative output terminal of the external power supply 300, and the second terminal 42 of the first module can be connected to one end of the external load 200.

[0061] Return to reference Figure 1 and Figure 2 In some embodiments, the circuit breaker may further include a second module. The second module includes any of the inter-pole parallel components 100 described above. The first module and the second module have the same structure.

[0062] Continue to refer to Figure 1 and Figure 2 In some embodiments, the first terminal 1 of the first module can be connected to the positive output terminal of the external power supply 300. The first terminal 1 of the second module can be connected to the negative output terminal of the external power supply 300. Furthermore, the second terminal 42 of the first module can be connected to the positive input terminal of the external load 200, and the second terminal 42 of the second module can be connected to the negative input terminal of the external load 200. The external load 200 may include one or more loads.

[0063] It should be noted that both the first terminal 1 and the second terminal 42 can be connected in both forward and reverse directions. For example, in some other embodiments, the first terminal 1 of the first module can be connected to the positive output terminal of the external power supply 300. The second terminal 42 of the first module can be connected to the positive input terminal of the external load 200. However, the negative input terminal of the external load 200 can also be connected to the first terminal 1 of the second module. The second terminal 42 of the second module can also be connected to the negative output terminal of the external power supply 300. The embodiments disclosed herein do not impose limitations on this.

[0064] The bus design according to embodiments of this disclosure can be applied to various circuit breakers, such as DC circuit breakers, to at least partially solve the above-mentioned problems. It should be understood that the bus design according to embodiments of this disclosure can also be applied to other electrical components, and the embodiments of this disclosure are not limiting in this regard.

[0065] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A parallel inter-pole assembly (100), characterized in that, The inter-pole parallel assembly (100) includes: First terminal (1); Multiple stationary contacts (2) are respectively connected to the first terminal block (1); Multiple moving contacts (3) are adapted to connect and disconnect with corresponding stationary contacts (2); A busbar (4) includes a busbar section (41), a second terminal block (42), and a plurality of connecting sections (43). One end of each of the plurality of connecting sections (43) is connected to the busbar section (41), and the other end of each of the plurality of connecting sections (43) is connected to the second terminal block (42). The busbar section (41) is connected to the plurality of moving contacts (3). The first terminal (1) is adapted to be connected to one of an external load (200) and an external power supply (300), and the second terminal (42) is adapted to be connected to the other of the external load (200) and the external power supply (300).

2. The inter-pole parallel assembly (100) according to claim 1, characterized in that, The busbar (41), the second terminal (42), and the plurality of connecting parts (43) are integrally formed.

3. The inter-pole parallel assembly (100) according to claim 1, characterized in that, At least one of the plurality of connecting portions (43) is provided with a bimetallic strip (61), and at least one of the plurality of connecting portions (43) other than the at least one connecting portion (43) is provided with a magnetic deactivation unit (62).

4. The inter-pole parallel assembly (100) according to claim 3, characterized in that, Each of the plurality of connecting portions (43) includes a first portion (431), a second portion (432), and a bend (433) disposed between the first portion (431) and the second portion (432), the first portion (431) being connected to the busbar (41), and the second portion (432) being connected to the second terminal (42).

5. The inter-pole parallel assembly (100) according to claim 4, characterized in that, The bimetallic sheet (61) and the magnetic deactivation unit (62) are respectively disposed on the second part (432) of the corresponding connecting part (43).

6. The inter-pole parallel assembly (100) according to claim 1, characterized in that, The inter-pole parallel assembly (100) further includes a first adapter bar (51), and the first terminal block (1) is adapted to be connected via the first adapter bar (51) to one of the external load (200) and the external power supply (300).

7. The inter-pole parallel assembly (100) according to claim 1, characterized in that, The inter-pole parallel assembly (100) further includes a second adapter bar (52), and the second terminal block (42) is adapted to be connected via the second adapter bar (52) to another of the external load (200) and the external power supply (300).

8. The inter-pole parallel assembly (100) according to claim 7, characterized in that, The second terminal (42) is divided into multiple parts, and each of the multiple parts of the second terminal (42) is connected to a corresponding connection part (43).

9. A circuit breaker, characterized in that, The circuit breaker includes: A first module, comprising an inter-pole parallel assembly (100) according to any one of claims 1 to 8.

10. The circuit breaker according to claim 9, characterized in that, The circuit breaker also includes: The second module includes the inter-pole parallel component (100) according to any one of claims 1 to 8.

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