Unlocking mechanism of circuit breaker and circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses an unlocking mechanism of a circuit breaker and the circuit breaker, the unlocking mechanism is matched with a moving contact system in a circuit breaker shell, the moving contact system is provided with a locking block and a rotating lock catch, and the rotating lock catch is provided with a locking part clamped with the locking block; the unlocking mechanism of the circuit breaker comprises a connecting rod assembly, an operation window is formed in the surface of the side, provided with an opening and closing key, of the circuit breaker shell, an operation part connected with one end of the connecting rod assembly is arranged in the operation window in a penetrating mode, and the other end of the connecting rod assembly is connected with the rotating lock catch. And the connecting rod assembly is driven to drive the rotating lock catch to rotate, so that the locking part and the locking block are separated and unlocked. According to the invention, an operator can conveniently carry out unlocking operation of the moving contact system.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to an unlocking mechanism of a circuit breaker and a circuit breaker. Background Art

[0002] The moving contact system of the circuit breaker is usually provided with a mechanical lock structure, which is used to lock the moving contact system and improve the safety of the closed state. The prior art usually sets the opening and closing buttons on the front of the circuit breaker housing, and sets the unlocking components on the other side. When the circuit breaker module is installed in a box such as an electric meter, the operator cannot directly see the unlocking component on the front of the circuit breaker housing, which causes inconvenience in the unlocking operation. Utility Model Content

[0003] The purpose of the present application is to provide an unlocking mechanism of a circuit breaker and a circuit breaker, wherein the operating part of the unlocking mechanism and the opening and closing buttons are both arranged on the front side of the circuit breaker housing, so as to facilitate the operator to perform the unlocking operation of the moving contact system.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides an unlocking mechanism of a circuit breaker, which is arranged in cooperation with a moving contact system in a circuit breaker housing, and a locking block and a rotating lock are arranged on the moving contact system; the unlocking mechanism of the circuit breaker includes a connecting rod assembly, and a surface on one side of the circuit breaker housing where a switch-on and switch-off button is arranged has an operation window, and an operating part is penetrated in the operation window, and the operating part is arranged at one end of the connecting rod assembly; when unlocking, the other end of the connecting rod assembly is connected to the rotating lock, and the connecting rod assembly is driven to drive the rotating lock to rotate, so that the rotating lock is separated from the locking block.

[0006] As an optional embodiment, a slide groove is provided in the circuit breaker housing, and the connecting rod assembly includes a pressing rod arranged in the slide groove, the pressing rod has a guiding inclined surface on the side close to the rotating lock, and the rotating lock is provided with an abutment portion that contacts the guiding inclined surface, the pressing rod is driven to drive the guiding inclined surface to move, and the abutment portion drives the rotating lock to rotate under the abutting force.

[0007] As an optional implementation, a line from the abutment point of the abutment portion on the guiding slope to the rotation center of the rotary lock forms an abutment angle with the guiding slope, wherein the abutment angle is less than or equal to 80°.

[0008] As an optional embodiment, a first mounting platform is provided on the pressing rod, and a second mounting platform is provided on the circuit breaker housing, the planes where the first mounting platform and the second mounting platform are located are perpendicular to the extension direction of the slide groove, and a first return spring is provided between the first mounting platform and the second mounting platform, and the first return spring is compressed when the pressing rod drives the rotating lock to rotate and unlock.

[0009] As an optional implementation, a surface of one side of the circuit breaker housing where the opening and closing buttons are arranged has an operation window, and the operating portion is arranged in the operation window and is flush with the plane where the operation window is located.

[0010] As an optional embodiment, the connecting rod assembly includes a control rod and a rotating connecting rod, the middle part of the rotating connecting rod is rotatably connected to the circuit breaker housing, one end of the rotating connecting rod is hinged to the end of the control rod, and the other end of the rotating connecting rod is connected to the rotating lock, and the control rod is driven to drive the rotating connecting rod to rotate, so that the rotating lock is rotated and unlocked.

[0011] As an optional implementation, the rotary lock catch is provided with a supporting groove opening toward the control rod, and the rotary connecting rod has a toggle end inserted into the toggle groove, and the toggle end is driven to toggle the rotary lock catch to rotate.

[0012] As an optional embodiment, the control rod is connected to the operating part at one end close to the operating window, and has a first guide surface intersecting with the extension direction of the control rod at the other end. A second guide surface that is in contact with the first guide surface is provided on the circuit breaker housing, so that the connection end of the control rod and the rotating connecting rod slides toward the rotating lock side.

[0013] As an optional implementation, the control rod is a push rod or a pull rod.

[0014] As an optional implementation, a second return spring is disposed in the circuit breaker housing, and one end of the second return spring is connected to the circuit breaker housing, and the other end of the second return spring is connected to the control rod.

[0015] In a second aspect, an embodiment of the present application further provides a circuit breaker, comprising a circuit breaker housing, a moving contact system and the unlocking mechanism of the circuit breaker described above; a driving system for driving the moving contact system to rotate is arranged in the circuit breaker housing.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The embodiment of the present application provides an unlocking mechanism of a circuit breaker, which is arranged in cooperation with a moving contact system in a circuit breaker housing, wherein a locking block and a rotating lock are arranged on the moving contact system, and a locking portion engaged with the locking block is arranged on the rotating lock; the unlocking mechanism of the circuit breaker of the embodiment of the present application includes a connecting rod assembly, wherein one end of the connecting rod assembly is connected to an operating portion, and the other end of the connecting rod assembly is connected to the rotating lock, and the connecting rod assembly is driven to drive the rotating lock to rotate, so that the locking portion is separated from the locking block and unlocked. The embodiment of the present application drives the connecting rod assembly through the operating portion, thereby driving the rotating lock to rotate so that the locking portion is separated from the locking block, thereby unlocking the moving contact system. Compared with the prior art, the embodiment of the present application sets the operating portion and the opening and closing button of the unlocking mechanism on the front of the circuit breaker housing, so that the staff can directly see whether the moving contact system is in a locked state, and it is also convenient for the operator to perform the unlocking operation of the moving contact system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the opening and closing unlocking structure of the embodiment of the present application;

[0020] Figure 2 This is the second structural diagram of the opening and closing unlocking structure of the embodiment of the present application;

[0021] Figure 3 This is the third structural diagram of the opening and closing unlocking structure of the embodiment of the present application;

[0022] Figure 4 This is the fourth structural diagram of the opening and closing unlocking structure of the embodiment of the present application;

[0023] Figure 5 This is the fifth structural diagram of the opening and closing unlocking structure of the embodiment of the present application;

[0024] Figure 6 This is the sixth structural diagram of the closing and unlocking structure of the embodiment of the present application.

[0025] icon:

[0026] 100-circuit breaker housing; 101-moving contact system; 102-locking block; 103-rotating lock; 104-locking part; 105-connecting rod assembly; 106-operating window; 107-operating part; 108-slide groove; 109-pressing rod; 110-guide slope; 111-abutment part; 112-first mounting platform; 113-second mounting platform; 114-first return spring; 115-control rod; 116-rotating connecting rod; 117-sliding end; 118-second return spring; 119-abutment angle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The moving contact system 101 of the circuit breaker is usually provided with a mechanical lock structure for locking the moving contact system 101 to improve the safety of the closed state. In the prior art, the opening and closing buttons are usually arranged on the front of the circuit breaker housing 100, and the unlocking components are arranged on the other side. When the circuit breaker module is installed in a box such as an electric meter, the operator cannot directly see the unlocking component on the front of the circuit breaker housing 100, which causes inconvenience in the unlocking operation.

[0032] In order to solve the above technical problems, an embodiment of the present application provides an unlocking mechanism of a circuit breaker and a circuit breaker.

[0033] Reference Figure 1 and Figure 2 As shown, the embodiment of the present application provides an unlocking mechanism of a circuit breaker, which is arranged in cooperation with a moving contact system 101 in a circuit breaker housing 100, wherein a locking block 102 and a rotating lock catch 103 are arranged on the moving contact system 101, and a locking portion 104 engaged with the locking block 102 is arranged on the rotating lock catch 103; the unlocking mechanism of the circuit breaker includes a connecting rod assembly 105, and a surface on one side of the circuit breaker housing 100 where a switch-on and switch-off button is arranged has an operation window 106, and an operation portion 107 is penetrated in the operation window 106, and the operation portion 107 is arranged at one end of the connecting rod assembly 105. When unlocking, the other end of the connecting rod assembly 105 is connected to the rotating lock catch 103, and the connecting rod assembly 105 is driven to drive the rotating lock catch 103 to rotate, so that the locking portion 104 is separated from the locking block 102 and unlocked.

[0034] It should be noted that the operating portion 107 of the embodiment of the present application and the upper end of the connecting rod assembly 105 can be configured as a whole, or the operating portion 107 and the connecting rod assembly 105 can be fixedly connected by bolts or a clamping assembly.

[0035] In a specific operation, a person skilled in the art can push or pull the connecting rod assembly 105 by holding the operating part 107 , so that the connecting rod assembly 105 can drive the rotating lock buckle 103 to rotate.

[0036] It should be noted that a locking portion 104 is provided on the rotating lock catch 103, and the locking portion 104 can be abutted and engaged with the locking block 102 on the moving contact system 101 to ensure the stability of the moving contact system 101 in the closed state and achieve mechanical locking of the moving contact system. When the switch needs to be opened, the staff can drive the rotating lock catch to rotate through the operating portion 107 and the connecting rod assembly 105, so that the locking portion 104 moves away from the locking block 102, thereby unlocking the moving contact system 101.

[0037] Reference Figure 1 and Figure 2As shown, an unlocking mechanism of a circuit breaker provided in an embodiment of the present application is arranged in cooperation with a moving contact system 101 in a circuit breaker housing 100, a locking block 102 and a rotating lock buckle 103 are arranged on the moving contact system 101, and a locking portion 104 engaged with the locking block 102 is arranged on the rotating lock buckle 103; the unlocking mechanism of the circuit breaker in the embodiment of the present application includes a connecting rod assembly 105, and a surface on one side of the circuit breaker housing 100 where the opening and closing buttons are arranged has an operation window 106, an operation portion 107 connected to one end of the connecting rod assembly 105 is penetrated in the operation window 106, and the other end of the connecting rod assembly 105 is connected to the rotating lock buckle 103, and the connecting rod assembly 105 is driven to drive the rotating lock buckle 103 to rotate, so that the locking portion 104 is separated from the locking block 102 and unlocked.

[0038] In the embodiment of the present application, the operating portion 107 drives the connecting rod assembly 105 , thereby driving the rotating lock catch 103 to rotate so that the locking portion 104 is separated from the locking block 102 , thereby unlocking the moving contact system 101 .

[0039] Compared with the prior art, the embodiment of the present application arranges the operating part 107 of the unlocking mechanism and the opening and closing buttons on the front of the circuit breaker housing 100, so that the staff can directly see whether the moving contact system 101 is in a locked state, and it is also convenient for the operator to perform the unlocking operation of the moving contact system 101.

[0040] Reference Figure 1 and Figure 2 As shown, as an optional embodiment, a slide groove 108 is provided in the circuit breaker housing 100, and the connecting rod assembly 105 includes a pressing rod 109 arranged in the slide groove 108, and the pressing rod 109 has a guiding inclined surface 110 on the side close to the rotating lock 103, and the rotating lock 103 is provided with an abutment portion 111 that contacts the guiding inclined surface 110. The pressing rod 109 is driven to drive the guiding inclined surface 110 to move, and the abutment portion 111 drives the rotating lock 103 to rotate under the abutting force.

[0041] In the embodiment of the present application, a slide groove 108 is disposed in the circuit breaker housing 100 , and a pressing rod 109 is slidably disposed in the slide groove 108 .

[0042] It should be noted that the slide groove 108 can play a role of sliding guide for the pressing rod 109, so that the pressing rod 109 moves along a straight line under pressure.

[0043] The slide slot 108 and the pressing rod 109 are arranged on one side of the rotating lock 103. It should be noted that the movement direction of the pressing rod 109 is perpendicular to the rotation axis of the rotating lock 103, and the pressing rod 109 and the slide slot 108 are located on one side of the rotation axis.

[0044] Reference Figure 1 , Figure 2 as well as Figure 5 As shown, further, in the embodiment of the present application, a guiding slope 110 is provided on the side of the pressing rod 109 close to the rotating lock buckle 103. When the pressing rod 109 moves downward, the abutting portion 111 drives the rotating lock buckle 103 to rotate under the pushing action of the guiding slope 110, thereby separating the locking portion 104 from the locking block 102.

[0045] It should be noted that the guiding inclined surface 110 may be formed by a triangular protrusion disposed on one side of the pressing rod 109 , and the inclined surface of the triangular protrusion is the guiding inclined surface 110 abutting against the abutting portion 111 .

[0046] The specific structure of the guiding slope 110 can be configured by those skilled in the art as required, and no special limitation is imposed on this.

[0047] Reference Figure 6 As shown, a line from the abutment point of the abutment portion 111 on the guiding slope 110 to the rotation center of the rotating lock buckle 103 forms an abutment angle 119 with the guiding slope 110, wherein the abutment angle 119 is less than or equal to 80°.

[0048] Reference Figure 2 As shown, as an optional embodiment, a first mounting platform 112 is provided on the pressing rod 109, and a second mounting platform 113 is provided on the circuit breaker housing 100. The planes where the first mounting platform 112 and the second mounting platform 113 are located are perpendicular to the extension direction of the slide groove 108. A first return spring 114 is provided between the first mounting platform 112 and the second mounting platform 113. When the pressing rod 109 drives the rotating lock buckle 103 to rotate and unlock, the first return spring 114 is compressed.

[0049] Furthermore, in the embodiment of the present application, a first mounting platform 112 is disposed on the pressing rod 109 , and one end of the first return spring 114 is connected to the first mounting platform 112 , and the other end is connected to the second mounting platform 113 .

[0050] When the operator pushes the pressing rod 109 to move through the operating part 107, the first mounting platform 112 will squeeze the first return spring 114 to store elastic potential energy. When the locking part 104 and the locking block 102 are unlocked, the staff releases the pressing rod 109, and the first return spring 114 releases the elastic potential energy to reset the pressing rod 109.

[0051] It should be noted that both ends of the first return spring 114 can be respectively engaged with the first mounting platform 112 and the second mounting platform 113 .

[0052] As an optional implementation, a surface of one side of the circuit breaker housing 100 where the opening and closing buttons are arranged has an operation window 106 , and an operating portion 107 is arranged in the operation window 106 and is flush with the plane where the operation window 106 is located.

[0053] Furthermore, in the embodiment of the present application, the operating portion 107 is flush with the plane where the operating window 106 is located, and the operating portion 107 protrudes from the operating window 106 to ensure the flatness of the front side wall of the circuit breaker housing 100 .

[0054] It should be noted that the staff can press the operating portion 107 through the operating window 106 , so that the pressing rod 109 is forced to move in the sliding groove 108 .

[0055] Reference Figure 3 , Figure 4 As shown, as an optional embodiment, the connecting rod assembly 105 includes a control rod 115 and a rotating connecting rod 116, the middle part of the rotating connecting rod 116 is rotatably connected to the circuit breaker housing 100, one end of the rotating connecting rod 116 is hinged to the end of the control rod 115, and the other end of the rotating connecting rod 116 is connected to the rotating lock 103, and the control rod 115 is driven to drive the rotating connecting rod 116 to rotate, so that the rotating lock 103 is rotated and unlocked.

[0056] Different from the above-mentioned embodiment, the connecting rod assembly 105 provided in the embodiment of the present application includes a control rod 115 and a rotating connecting rod 116. The middle part of the rotating connecting rod 116 is rotatably connected to the circuit breaker housing 100, and the control rod 115 can push one end of the rotating connecting rod 116 to rotate, so that the other end of the rotating connecting rod 116 rotates synchronously, and the rotating lock buckle 103 is rotated, so that the locking portion 104 is separated from the locking block 102.

[0057] Specifically, the rotary lock buckle 103 of the embodiment of the present application is provided with a supporting groove opening toward the control rod 115 , and the rotary connecting rod 116 has a toggle end 117 inserted into the toggle groove, and the toggle end 117 is driven to toggle the rotary lock buckle 103 to rotate.

[0058] One end of the rotating connecting rod 116 is connected to the control rod 115 , and the other end is a toggle end 117 . The rotation of the toggle end 117 can cause the abutting groove to drive the rotating lock buckle 103 to rotate.

[0059] As an optional embodiment, one end of the control rod 115 close to the operating window 106 is connected to the operating part 107, and the other end has a first guide surface intersecting with the extension direction of the control rod 115. A second guide surface that is in contact with the first guide surface is provided on the circuit breaker housing 100, so that the connection end of the control rod 115 and the rotating connecting rod 116 slides toward the side of the rotating lock 103.

[0060] It should be noted that the control rod 115 is a push rod or a pull rod.

[0061] Reference Figure 3 As shown, the control rod 115 is exemplarily a push rod, one end of the push rod near the operation window 106 is connected to the operating portion 107, and the other end has a first guide surface intersecting with the extension direction of the control rod 115, and a second guide surface in contact with the first guide surface is provided on the circuit breaker housing 100. When the push rod moves downward, due to the abutment between the first guide surface and the second guide surface, the lower end of the push rod slides toward the rotating lock 103, and at the same time, a thrust force is formed to push the rotating connecting rod 116.

[0062] As an optional implementation, a second return spring 118 is disposed in the circuit breaker housing 100 , and one end of the second return spring 118 is connected to the circuit breaker housing 100 , and the other end of the second return spring 118 is connected to the control rod 115 .

[0063] It should be noted that the second return spring 118 is a tension spring.

[0064] Reference Figure 3 As shown, when the control rod 115 is a push rod, the second return spring 118 stores elastic potential energy when the control rod 115 moves downward, and after unlocking is completed, the second return spring 118 can reset the control rod 115.

[0065] Reference Figure 4 As shown, when the control rod 115 is a pull rod, the second return spring 118 stores elastic potential energy when the control rod 115 moves upward, and after unlocking is completed, the second return spring 118 can reset the control rod 115.

[0066] The embodiment of the present application further provides a circuit breaker, comprising a circuit breaker housing 100 , a moving contact system 101 and the unlocking mechanism of the circuit breaker described above; a driving system for driving the moving contact system 101 to rotate is arranged in the circuit breaker housing 100 .

[0067] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An unlocking mechanism for a circuit breaker, characterized in that: The invention is arranged in cooperation with a moving contact system (101) in a circuit breaker housing (100); the moving contact system (101) is provided with a lock block (102) and a rotating lock catch (103); the unlocking mechanism of the circuit breaker comprises a connecting rod assembly (105); one end of the connecting rod assembly (105) is provided with an operating portion (107); when unlocking, the other end of the connecting rod assembly (105) is connected to the rotating lock catch (103), and the connecting rod assembly (105) is driven to rotate the rotating lock catch (103), so that the rotating lock catch (103) is separated from the locking block (102).

2. The unlocking mechanism of the circuit breaker according to claim 1, characterized in that: A slide groove (108) is arranged in the circuit breaker housing (100), and the connecting rod assembly (105) includes a pressing rod (109) arranged in the slide groove (108), and the pressing rod (109) has a guiding inclined surface (110) on a side close to the rotating lock (103), and an abutting portion (111) in contact with the guiding inclined surface (110) is arranged on the rotating lock (103), and the pressing rod (109) is driven to drive the guiding inclined surface (110) to move, and the abutting portion (111) drives the rotating lock (103) to rotate under the abutting force.

3. The unlocking mechanism of the circuit breaker according to claim 2, characterized in that: A line from the abutment point of the abutment portion (111) on the guiding inclined surface (110) to the rotation center of the rotating lock buckle (103) forms an abutment angle (119) with the guiding inclined surface (110), wherein the abutment angle (119) is less than or equal to 80°.

4. The unlocking mechanism of the circuit breaker according to claim 2, characterized in that: A first mounting platform (112) is arranged on the pressing rod (109), and a second mounting platform (113) is arranged on the circuit breaker housing (100); the planes where the first mounting platform (112) and the second mounting platform (113) are located are both perpendicular to the extension direction of the slide groove (108); a first return spring (114) is arranged between the first mounting platform (112) and the second mounting platform (113); and the first return spring (114) is compressed when the pressing rod (109) drives the rotating lock buckle (103) to rotate and unlock.

5. The unlocking mechanism of the circuit breaker according to claim 1, characterized in that: A surface of one side of the circuit breaker housing (100) where the opening and closing buttons are arranged has an operation window (106), and the operation portion (107) is arranged in the operation window (106) and the operation portion (107) is flush with the plane where the operation window (106) is located.

6. The unlocking mechanism of the circuit breaker according to claim 1, characterized in that: The connecting rod assembly (105) comprises a control rod (115) and a rotating connecting rod (116); the middle portion of the rotating connecting rod (116) is rotatably connected to the circuit breaker housing (100); one end of the rotating connecting rod (116) is hinged to the end of the control rod (115); the other end of the rotating connecting rod (116) is connected to the rotating lock (103); the control rod (115) is driven to drive the rotating connecting rod (116) to rotate, so that the rotating lock (103) is rotated and unlocked.

7. The unlocking mechanism of the circuit breaker according to claim 6, characterized in that: The rotating lock buckle (103) is provided with a supporting groove with an opening facing the control rod (115), and the rotating connecting rod (116) has a toggle end (117) inserted into the toggle groove, and the toggle end (117) is driven to toggle the rotating lock buckle (103) to rotate.

8. The unlocking mechanism of the circuit breaker according to claim 6, characterized in that: One end of the control rod (115) is connected to the operating portion (107), and the other end has a first guide surface intersecting with the extension direction of the control rod (115). The circuit breaker housing (100) is provided with a second guide surface in contact with the first guide surface, so that the connection end of the control rod (115) and the rotating connecting rod (116) slides toward the rotating lock buckle (103).

9. The unlocking mechanism of the circuit breaker according to claim 6, characterized in that: The control rod (115) is a push rod or a pull rod.

10. The unlocking mechanism of the circuit breaker according to claim 6, characterized in that: A second return spring (118) is arranged in the circuit breaker housing (100); one end of the second return spring (118) is connected to the circuit breaker housing (100) and the other end is connected to the control rod (115).

11. A circuit breaker, characterized in that: The invention comprises a circuit breaker housing (100), a moving contact system (101) and an unlocking mechanism of the circuit breaker according to any one of claims 1 to 10; a driving system for driving the moving contact system (101) to rotate is arranged in the circuit breaker housing (100).

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