Miniature circuit breaker with multiple wiring modes

Abstract

The invention relates to a miniature circuit breaker with multiple wiring modes, which relates to the technical field of intelligent power grids and comprises a shell, an electrical element arranged in the shell and a control handle rotationally arranged on the front side of the shell. A first wiring port is formed in the front portion of the top face of the shell, a second wiring port is formed in the back side of the shell, and a receding notch communicated with the second wiring port is formed in the rear portion of the top face. A conducting strip of which one end is connected with the electrical element is fixedly arranged in the shell, and a binding post positioned in the first wiring port and an elastic clamping piece positioned in the second wiring port are fixedly arranged at the other end of the conducting strip at the same time; a connecting plate is rotationally connected to the side wall of the receding notch, and a protection plate is vertically and fixedly arranged on the side face edge, away from the shell, of the connecting plate; a locking piece is arranged outside the shell; in the application, the connection plate can be flexibly switched to two protection states to correspondingly block the idle first wiring port or the idle second wiring port, so that dust is prevented from entering the shell and being attached to core electrical components such as the conducting strip and the binding post.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to a miniature circuit breaker with multiple wiring configurations. Background Technology

[0002] In the process of building a smart grid, miniature circuit breakers (MCBs) are core protection components of the power distribution system, and their wiring flexibility and adaptability directly affect the stability of grid operation and maintenance efficiency. With the diversified development of distributed power generation and smart home power consumption scenarios, different application scenarios have put forward different requirements for the wiring methods of MCBs. Some scenarios require direct cable wiring, while others require quick connection through conductive plugs.

[0003] In the prior art, a miniature circuit breaker adaptable to multiple scenarios mainly consists of a housing, built-in electrical components, and a control handle rotatably connected to the front of the housing. A first wiring port is opened on the top surface of the housing, and a second wiring port is opened on the back side. A conductive plate is fixedly installed inside the housing; one end of the conductive plate is electrically connected to the electrical components, and the other end is simultaneously fixed to two wiring components: a terminal block located in the first wiring port and an elastic clamping piece located in the second wiring port. During wiring installation, the wiring method can be selected according to site requirements: either the cable can be inserted into the first wiring port for a secure connection with the terminal block, or the external conductive plate can be inserted into the second wiring port for a mating connection with the elastic clamping piece, effectively improving the circuit breaker's installation adaptability and operational convenience.

[0004] In the aforementioned technologies, when the cable is connected to the first terminal, the second terminal is completely exposed, making it easy for external dust to enter the housing through the opening. Similarly, when the conductive tab is connected to the second terminal, the opening of the first terminal also becomes a channel for dust to enter. Long-term dust accumulation will adhere to the surfaces of core electrical components such as conductive tabs and terminals, causing a decrease in insulation performance and an increase in contact resistance. This not only affects the circuit breaker's switching sensitivity but may also lead to safety hazards such as short circuits and overheating, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a miniature circuit breaker with multiple wiring options, which solves the problem in the above-mentioned related technologies where dual wiring ports are independently open, and dust easily enters the unconnected ports, resulting in damage to the insulation and contact performance of core electrical components and causing safety hazards.

[0006] The miniature circuit breaker with multiple wiring configurations provided in this application adopts the following technical solution: A miniature circuit breaker with multiple wiring options includes a housing, electrical components installed inside, and a control handle rotatably mounted on the front side of the housing. The housing has a first wiring port on its front top surface, a second wiring port on its back surface, and a clearance notch on its rear top surface communicating with the second wiring port. Inside the housing, a conductive plate with one end connected to the electrical components is fixedly disposed; the other end of the conductive plate is simultaneously fixed with a terminal post in the first wiring port and an elastic clamping piece in the second wiring port. A connecting plate is rotatably connected to the side wall of the clearance notch. A protective plate is vertically fixed to the side edge of the connecting plate away from the housing. The connecting plate can rotate upwards to a first protective state abutting against the side wall of the clearance notch, and downwards to a second protective state abutting against the inner wall of the clearance notch. The protective plate blocks the first wiring port when the connecting plate is in the first protective state and blocks the second wiring port when it is in the second protective state. Locking elements limiting the two protective plate positions are provided outside the housing.

[0007] By adopting the above technical solution, the connection plate can flexibly switch between two protection states, correspondingly sealing off the unused first or second wiring port. This prevents dust from entering the housing and adhering to core electrical components such as conductive sheets and terminals, ensuring the insulation performance and contact stability of components, reducing safety hazards such as short circuits and overheating, while ensuring that the circuit breaker's switching sensitivity is not affected. The locking mechanism can precisely limit the protection plate's state, preventing accidental displacement during use and ensuring protection reliability. The overall structural design is compact, does not affect the normal switching between the two wiring methods and the ease of operation, and is suitable for diverse power consumption scenarios such as distributed power grid connection and smart homes. It balances wiring flexibility and protection safety, improving the circuit breaker's service life and the stability of power grid operation.

[0008] Optionally, the protective plate is an elastic telescopic plate with active elastic elongation performance, and the locking member includes a first limiting block fixed on the top surface of the housing and a second limiting block fixed on the inner wall of the clearance notch; the first limiting block has a first limiting notch, and the second limiting block has a second limiting notch, and the edge of the protective plate away from the connecting plate is locked into the first limiting notch when the first wiring port is blocked, and locked into the second limiting notch when the second wiring port is blocked.

[0009] By adopting the above technical solution, the dual-limit block design of the locking component corresponds to the states of the protective plate blocking the two wiring ports, achieving precise limiting. The snap-fit ​​between the edge of the protective plate and the limiting notch further prevents the protective plate from accidentally loosening or shifting, enhancing the dust protection effect on unconnected ports and preventing dust from entering and affecting the performance of core electrical components. The overall structure is simple and reliable, and the locking and switching of the protection state can be completed without complicated operations, balancing protection safety and ease of operation, and ensuring the stable operation of the circuit breaker in different wiring scenarios.

[0010] Optionally, the protective plate has a first inclined surface at the side edge away from the connecting plate.

[0011] By adopting the above technical solution, the first inclined surface can guide the edge of the protective plate to smoothly engage with the corresponding limiting notch, reduce assembly resistance, improve the fit after engagement, enhance limiting stability and sealing performance, and optimize ease of operation.

[0012] Optionally, a second inclined surface is provided at the opening edge of the first limiting notch and the second limiting notch.

[0013] By adopting the above technical solution, the second inclined surface cooperates with the first inclined surface of the protective plate to further guide the protective plate to accurately snap into the notch, reduce the snapping resistance, improve the state switching efficiency, and at the same time enhance the snapping sealing and limit reliability.

[0014] Optionally, the outer side of the housing is provided with an upper protective shell rotatably connected to the upper edge of the front side of the housing on one side, and a lower protective shell rotatably connected to the edge of the upper protective shell away from the housing on the other side. A limit plate is rotatably connected to the front edge of the bottom of the housing. Both the upper and lower protective shells can be rotated to a vertically downward position. At this time, the inner wall of the lower protective shell is provided with a control component that can be detachably connected to the limit plate. The upper and lower protective shells together protect the front side of the housing.

[0015] By adopting the above technical solution, the upper and lower protective shells are rotated together to form an overall protective structure for the front side of the shell. During transportation or regular application, the two shells are rotated to a vertical downward position. Stable limiting is achieved by using the detachable connection between the control components and the limit plate. This effectively prevents external impacts, dust and foreign objects from entering, protects exposed components such as the control handle from damage, and ensures the structural integrity and performance of the circuit breaker.

[0016] Optionally, the limiting plate has a limiting through hole, and the control component includes a control plate that slides on the inner wall of the lower protective shell. An elastic anti-detachment component is provided on the outer periphery of the end of the control plate away from the upper protective shell. When both the upper and lower protective shells are in a vertically downward state and the limiting plate is rotated to a horizontal state, the control plate can move down through the limiting through hole. At this time, the elastic anti-detachment component is located on the side of the control plate away from the lower protective shell.

[0017] By adopting the above technical solution, the upper and lower protective shells can be quickly connected to the limiting plate through the interlocking fit between the control plate and the limiting hole. Combined with the limiting function of the elastic anti-detachment component, the control plate is effectively prevented from detaching spontaneously, ensuring the stability of the protective shell's protection of the front side of the housing. During transportation or application, it prevents the protective shell from accidentally opening due to vibration or collision, ensuring that components such as the control handle are protected from external damage and dust intrusion. Furthermore, the elastic anti-detachment component's design requires no additional tools; the limiting is released simply by manual pressing, enabling convenient switching of the protective state. The overall structure is simple and reliable, balancing protective safety and operational convenience, and improving the circuit breaker's durability and adaptability to various scenarios.

[0018] Optionally, a guide block is fixedly provided on the inner wall of the lower protective shell, and a guide through hole is provided on the guide block for the control plate to pass through and slide. An anti-slip strip is fixedly provided on the outer periphery of the end of the control plate away from the elastic anti-slip member.

[0019] By adopting the above technical solution, the cooperation between the guide block and the guide through hole can accurately limit the sliding trajectory of the control plate, avoid deviation and jamming during sliding, and improve the smoothness of operation; the anti-slip strip can prevent the control plate from slipping off the inner wall of the lower protective shell, forming a two-way anti-slip structure with the elastic anti-slip component, further ensuring the stability and reliability of the protective shell's limiting state.

[0020] Optionally, a positioning through hole is provided on the outer periphery of the end of the protective plate away from the connecting plate, and the protective plate can be rotated to a vertically upward traction state; when the protective plate is in the traction state, the upper protective shell can be rotated to a vertically upward state, and the lower protective shell can be rotated to a horizontal state along the direction toward the protective plate at this time. The control plate can slide and pass through the positioning through hole, and the elastic anti-detachment component is located on the side of the protective plate away from the lower protective shell at this time.

[0021] By adopting the above technical solution, a single-piece lifting handle is quickly formed through the structural combination of the protective plate, upper protective shell, lower protective shell, and control plate, enabling convenient short-distance movement of the circuit breaker without the need for additional handling tools. After the protective plate is switched to the traction position, the upper and lower protective shells are adjusted accordingly to a vertical and horizontal position. The control plate passes through the positioning hole and is limited by elastic anti-detachment components, ensuring a stable connection of the combined structure and preventing loosening during transport. This design fully reuses existing protective components without adding additional structures. Without affecting core functions such as wiring and protection, it expands the application scenarios of the circuit breaker, balancing practicality and economy, and improving the convenience of operation and maintenance.

[0022] Optionally, the elastic anti-detachment component includes a compression spring and an anti-detachment protrusion. The control plate has a placement groove for inserting the compression spring and the anti-detachment protrusion. The compression spring presses one side of the anti-detachment protrusion, causing a portion of the anti-detachment protrusion to protrude from the opening of the placement groove.

[0023] By adopting the above technical solution, the compression spring can continuously squeeze the anti-detachment protrusion to keep it in a protruding state. When the control plate passes through the limiting through hole or positioning through hole, the protrusion can automatically engage to form a limit and prevent the control plate from falling out. This structure does not require additional locking components. The limit can be released by manually pressing the protrusion. The operation is convenient and the connection is stable and reliable.

[0024] Optionally, a guide slope is provided on the outer surface of the protruding portion of the anti-detachment bump.

[0025] By adopting the above technical solution, the guide slope can automatically retract the anti-detachment protrusion when the control plate enters the through hole, reducing the insertion resistance, improving the smoothness of operation, and ensuring the accuracy and stability of the locking limit.

[0026] In summary, this application includes the following beneficial technical effects: In this application, the connecting plate can be flexibly switched to two protection states, corresponding to blocking the unused first or second wiring port. This prevents dust from entering the housing and adhering to core electrical components such as conductive sheets and terminals, ensuring the insulation performance and contact stability of the components, reducing safety hazards such as short circuits and overheating, while ensuring that the circuit breaker's switching sensitivity is not affected. The locking mechanism can precisely limit the state of the protection plate, preventing accidental displacement during use and ensuring the reliability of protection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the installation and assembly of the housing and control handle in an embodiment of this application; Figure 2 This is an exploded structural diagram illustrating the installation and distribution of the terminals and elastic clamping pieces in an embodiment of this application; Figure 3 This is a schematic diagram illustrating the installation and cooperation of the connecting plate and the protective plate in an embodiment of this application; Figure 4 This is a partial structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 5 yes Figure 4 An enlarged schematic diagram of part A in the middle; Figure 6 This is a schematic diagram illustrating the installation and assembly of the protective components in an embodiment of this application; Figure 7 This is a partial structural diagram illustrating the installation and engagement of the limiting plate in an embodiment of this application; Figure 8 This is a schematic diagram illustrating the installation and assembly of the control components in an embodiment of this application; Figure 9 This is a schematic diagram illustrating the installation and cooperation of the control board and the protective board in an embodiment of this application; Figure 10This is a partial cross-sectional structural diagram illustrating the installation and fit of the elastic anti-detachment component in an embodiment of this application.

[0028] In the diagram, 1. Housing; 11. First wiring port; 12. Second wiring port; 13. Clearance notch; 14. Conductive sheet; 141. Terminal post; 142. Elastic clamping piece; 15. Control handle; 2. Control assembly; 3. Connecting plate; 4. Protective plate; 41. First inclined surface; 42. Positioning through hole; 5. Locking element; 51. First limiting block; 511. First limiting notch; 512. Second inclined surface; 52. Second limiting block; 521. Second limiting notch; 6. Protective assembly; 61. Upper protective shell; 62. Lower protective shell; 621. Guide block; 7. Limiting plate; 71. Limiting through hole; 8. Control element; 81. Control plate; 811. Placement groove; 82. Anti-detachment strip; 83. Elastic anti-detachment element; 831. Compression spring; 832. Anti-detachment protrusion; 8321. Guide inclined surface. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings. Example

[0030] Reference Figure 1 and Figure 2 A miniature circuit breaker with multiple wiring methods includes a housing 1, electrical components installed inside, and a control handle 15 rotatably mounted on the front side of the housing 1. A first wiring port 11 is provided on the front top of the housing 1, a second wiring port 12 is provided on the back side of the top, and a clearance notch 13 communicating with the second wiring port 12 is provided on the rear top. Screw insertion holes are provided on the upper and lower parts of the front side of the housing 1. Inside the housing 1, a conductive plate 14 is fixedly installed, one end of which is connected to an electrical component. The other end of the conductive plate 14 is simultaneously fixed with a terminal 141 located in the first terminal 11 and an elastic clamping piece 142 located in the second terminal 12. During wiring and installation, either the cable can be inserted into the first terminal 11 for a secure connection with the terminal 141, or an external conductive plate can be inserted into the second terminal 12 for a mating connection with the elastic clamping piece 142. Reference Figure 3 and Figure 4 The outer side of the housing 1 is provided with a locking member 5, and a connecting plate 3 is rotatably connected to the side wall of the clearance notch 13. A protective plate 4 is vertically fixed on the side edge of the connecting plate 3 away from the housing 1. The connecting plate 3 can be rotated upward to a first protective state that abuts against the side wall of the clearance notch 13, and rotated downward to a second protective state that abuts against the inner wall of the clearance notch 13. When the connecting plate 3 is in the first protection state, the protective plate 4 blocks the first wiring port 11, and the locking member 5 is used to limit the state of the protective plate 4; when the connecting plate 3 is in the second protection state, the protective plate 4 blocks the second wiring port 12, and the locking member 5 is used to limit the state of the protective plate 4. Reference Figure 3 , Figure 4 and Figure 5 The protective plate 4 is an elastic telescopic plate with active elastic elongation performance (with an internal spring but not shown). This is a conventional telescopic structure and will not be described in detail here. The locking component 5 includes a first limiting block 51 fixed on the top surface of the housing 1 and a second limiting block 52 fixed on the inner wall of the clearance notch 13. The first limiting block 51 has a first limiting notch 511, and the second limiting block 52 has a second limiting notch 521; the protective plate 4 has a first inclined surface 41 at the side edge away from the connecting plate 3, and the first limiting notch 511 and the second limiting notch 521 have a second inclined surface 512 at the opening edge. When the first connection port 11 is blocked, the edge of the protective plate 4 away from the connecting plate 3 is better inserted into the first limiting notch 511 using the first inclined surface 41 and the second inclined surface 512; when the second connection port 12 is blocked, the edge of the protective plate 4 away from the connecting plate 3 is better inserted into the second limiting notch 521 using the first inclined surface 41 and the second inclined surface 512.

[0031] Reference Figure 6 , Figure 7 and Figure 8 The outer side of the housing 1 is provided with a protective component 6, wherein the protective component 6 includes an upper protective shell 61 rotatably connected to the upper edge of the front side of the housing 1 on one side, and a lower protective shell 62 rotatably connected to the edge of the upper protective shell 61 away from the housing 1. A limit plate 7 is rotatably connected to the front edge of the bottom of the housing 1, and a control component 8 is provided on the inner wall of the lower protective shell 62. When the miniature circuit breaker is transported or used, the upper protective shell 61 and the lower protective shell 62 can be rotated to a vertically downward position, and the limit plate 7 and the lower protective shell 62 can be detachably connected by the control component 8. At this time, the upper protective shell 61 and the lower protective shell 62 jointly protect the front side of the shell 1.

[0032] Reference Figure 7 and Figure 8 The limiting plate 7 has a limiting through hole 71. The control component 8 includes a control plate 81 that slides on the inner wall of the lower protective shell 62. An elastic anti-detachment component 83 is provided on the outer periphery of the end of the control plate 81 away from the upper protective shell 61. A guide block 621 is fixed on the inner wall of the lower protective shell 62. A guide through hole is provided on the guide block 621 for the control plate 81 to pass through and slide. An anti-detachment strip 82 is fixed on the outer periphery of the end of the control plate 81 away from the elastic anti-detachment component 83. When both the upper protective shell 61 and the lower protective shell 62 are in a vertically downward position and the limiting plate 7 is rotated to a horizontal position (i.e., during the transport or application of the miniature circuit breaker), the control plate 81 can move down and pass through the limiting through hole 71. At this time, the elastic anti-detachment component 83 is located on the side of the control plate 81 away from the lower protective shell 62. In this way, the combination of the anti-detachment strip 82 and the elastic anti-detachment component 83 is used to prevent the control plate 81 from coming out of the limiting through hole 71 in its natural state.

[0033] Reference Figure 9 and Figure 10 The protective plate 4 has a positioning through hole 42 on the outer periphery of the end away from the connecting plate 3, and the protective plate 4 can be rotated to a vertically upward traction state; the elastic anti-detachment component 83 includes a compression spring 831 and an anti-detachment protrusion 832. The control plate 81 has a placement groove 811 for the compression spring 831 and the anti-detachment protrusion 832 to be placed in. The compression spring 831 squeezes one side of the anti-detachment protrusion 832 so that a part of the anti-detachment protrusion 832 protrudes from the opening of the placement groove 811, and a guide slope 8321 is provided on the outer side of the protruding part of the anti-detachment protrusion 832. When workers need to move the miniature circuit breaker a short distance, the protective plate 4 is pre-adjusted to the traction state, and then the upper protective shell 61 is rotated to the vertical upward state. At this time, the lower protective shell 62 is rotated to the horizontal state along the direction towards the protective plate 4. Then, the control plate 81 slides and passes through the positioning through hole 42. The elastic anti-detachment part 83 is located on the side of the protective plate 4 away from the lower protective shell 62. In this state, the upper protective shell 61, the lower protective shell 62, the control plate 81 and the protective plate 4 together form a "lifting handle", which makes it easy to move the circuit breaker a short distance.

[0034] The implementation principle of this application embodiment is as follows: When wiring, two methods can be selected: insert the cable into the first wiring port 11 on the top surface of the housing 1 and secure it to the terminal 141 on the conductive sheet 14. At this time, the connecting plate 3 is rotated to the second protective state, the protective plate 4 blocks the second wiring port 12, and the protective plate 4 is clamped and limited by the second limiting block 52; or insert the external conductive insert into the second wiring port 12 on the back side of the housing 1 and engage with the elastic clamping piece 142 of the conductive sheet 14. At this time, the connecting plate 3 is rotated to the first protective state, the protective plate 4 blocks the first wiring port 11, the protective plate 4 is clamped by the limiting notch of the first limiting block 51 and limited by the locking piece 5. During transportation or regular use, both the upper protective shell 61 and the lower protective shell 62 are rotated to face vertically downwards, and the limiting plate 7 is rotated to a horizontal position. The sliding control plate 81 passes through the limiting through hole 71, and the elastic anti-detachment part 83 cooperates with the anti-detachment strip 82 to prevent the control plate 81 from falling out, thus achieving overall protection of the front side of the shell 1. When it is necessary to remove the protection of the front side of the shell 1 by the upper protective shell 61 and the lower protective shell 62, the operator only needs to manually press the protruding part of the anti-detachment protrusion 832 and then slide the control plate 81 upwards.

[0035] When moving short distances, first adjust the protective plate 4 to the vertical upward traction state, then rotate the upper protective shell 61 to the vertical upward and the lower protective shell 62 to the horizontal. Then, the control plate 81 passes through the positioning through hole 42, and the various components are combined to form a lifting handle for easy handling. At this time, the limiting plate 7 is vertically downward under the action of gravity to protect the screw hole on the lower side, and the upper protective shell 61 protects the screw hole on the upper side.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A miniature circuit breaker with multiple wiring methods, comprising a housing (1), electrical components installed inside, and a control handle (15) rotatably mounted on the front side of the housing (1). The housing (1) has a first wiring port (11) on the front top surface, a second wiring port (12) on the back side, and a clearance notch (13) communicating with the second wiring port (12) on the rear top surface. A conductive sheet (14) with one end connected to the electrical components is fixed inside the housing (1), and the other end of the conductive sheet (14) is simultaneously fixed with a terminal post (141) in the first wiring port (11) and an elastic clamping piece (142) in the second wiring port (12). Its features are, A connecting plate (3) is rotatably connected to the side wall of the clearance notch (13). A protective plate (4) is vertically fixed on the side edge of the connecting plate (3) away from the housing (1). The connecting plate (3) can rotate upward to a first protective state that abuts against the side wall of the clearance notch (13) and downward to a second protective state that abuts against the inner wall of the clearance notch (13). The protective plate (4) blocks the first connection port (11) when the connecting plate (3) is in the first protective state and blocks the second connection port (12) when it is in the second protective state. The housing (1) is provided with locking members (5) that limit the two state protective plates (4) on the outside.

2. A miniature circuit breaker with multiple wiring configurations according to claim 1, characterized in that, The protective plate (4) is an elastic telescopic plate with active elastic elongation performance. The locking member (5) includes a first limiting block (51) fixed on the top surface of the housing (1) and a second limiting block (52) fixed on the inner wall of the clearance notch (13). The first limiting block (51) has a first limiting notch (511), and the second limiting block (52) has a second limiting notch (521). The edge of the protective plate (4) away from the connecting plate (3) is inserted into the first limiting notch (511) when the first wiring port (11) is blocked, and is inserted into the second limiting notch (521) when the second wiring port (12) is blocked.

3. A miniature circuit breaker with multiple wiring configurations according to claim 2, characterized in that, The protective plate (4) has a first inclined surface (41) at the side edge away from the connecting plate (3).

4. A miniature circuit breaker with multiple wiring configurations according to claim 2, characterized in that, A second inclined surface (512) is provided at the opening edge of the first limiting notch (511) and the second limiting notch (521).

5. A miniature circuit breaker with multiple wiring configurations according to claim 2, characterized in that, The outer side of the housing (1) is provided with an upper protective shell (61) that is rotatably connected to the upper edge of the front side of the housing (1) and a lower protective shell (62) that is rotatably connected to the upper protective shell (61) on the side away from the housing (1). A limit plate (7) is rotatably connected to the front edge of the bottom of the housing (1). Both the upper protective shell (61) and the lower protective shell (62) can be rotated to a vertically downward state. At this time, the inner wall of the lower protective shell (62) is provided with a control component (8) that can be detachably connected to the limiting plate (7). At this time, the upper protective shell (61) and the lower protective shell (62) jointly protect the front side of the shell (1).

6. A miniature circuit breaker with multiple wiring configurations according to claim 5, characterized in that, The limiting plate (7) has a limiting through hole (71), and the control component (8) includes a control plate (81) that slides on the inner wall of the lower protective shell (62). An elastic anti-detachment component (83) is provided on the outer periphery of the end of the control plate (81) away from the upper protective shell (61). When the upper protective shell (61) and the lower protective shell (62) are both in a vertically downward state and the limiting plate (7) is rotated to a horizontal state, the control plate (81) can move down through the limiting through hole (71), and the elastic anti-detachment component (83) is located on the side of the control plate (81) away from the lower protective shell (62).

7. A miniature circuit breaker with multiple wiring configurations according to claim 6, characterized in that, A guide block (621) is fixed on the inner wall of the lower protective shell (62). A guide through hole is provided on the guide block (621) for the control plate (81) to pass through and slide. An anti-slip strip (82) is fixed on the outer periphery of the end of the control plate (81) away from the elastic anti-slip member (83).

8. A miniature circuit breaker with multiple wiring configurations according to claim 6, characterized in that, The protective plate (4) has a positioning through hole (42) on the outer periphery of the end away from the connecting plate (3), and the protective plate (4) can be rotated to a vertically upward traction state; When the protective plate (4) is in a traction state, the upper protective shell (61) can be rotated to a vertically upward state, and the lower protective shell (62) can be rotated to a horizontal state in the direction toward the protective plate (4). The control plate (81) can slide and pass through the positioning through hole (42). The elastic anti-detachment component (83) is located on the side of the protective plate (4) away from the lower protective shell (62).

9. A miniature circuit breaker with multiple wiring configurations according to claim 6, characterized in that, The elastic anti-detachment component (83) includes a compression spring (831) and an anti-detachment protrusion (832). The control plate (81) has a placement groove (811) for the compression spring (831) and the anti-detachment protrusion (832) to be placed in. The compression spring (831) squeezes one side of the anti-detachment protrusion (832) so that a part of the anti-detachment protrusion (832) protrudes from the opening of the placement groove (811).

10. A miniature circuit breaker with multiple wiring configurations according to claim 9, characterized in that, The outer surface of the protruding part of the anti-detachment protrusion (832) is provided with a guide slope (8321).

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