An automatic reclosing residual current circuit breaker

Abstract

The application relates to the field of circuit breakers, in particular to an automatic reclosing leakage circuit breaker which comprises a shell, an operating mechanism and a contact mechanism arranged in the shell, and a reset mechanism arranged on the shell and used for resetting a pull rod tripped due to circuit fluctuation, wherein the reset mechanism comprises a main shell, a rotating shaft rotatably arranged in the main shell, a rotating shaft of the pull rod of the operating mechanism is connected with the rotating shaft and coaxially rotates with the rotating shaft, a reset rod is arranged on the rotating shaft, the reset mechanism further comprises a reset assembly arranged in the main shell and used for jacking the reset rod to rotate the rotating shaft, and a triggering assembly used for triggering the reset assembly to jack the reset rod. The application has the effect of reducing the probability that the circuit breaker needs to be frequently closed by workers after the circuit breaker is tripped due to current fluctuation.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and more particularly to an automatic reclosing residual current circuit breaker. Background Technology

[0002] A residual current circuit breaker (RCCB) is a switch that automatically opens when the leakage current in a circuit exceeds a predetermined value. It is used to protect the circuit. RCCBs are commonly divided into current-type circuit breakers for overcurrent protection and voltage-type circuit breakers for overload protection.

[0003] A circuit breaker typically includes a housing, a trip unit, an electromagnetic mechanism, an operating mechanism, and a contact mechanism. The contact mechanism includes an inlet terminal for electrical connection to the incoming conductor and an outlet terminal for electrical connection to the outgoing conductor. The operating mechanism includes a conductive plate rotating within the housing; one end of the conductive plate is electrically connected to the inlet terminal of the contact mechanism, and the other end is electrically connected to the electromagnetic mechanism. The electromagnetic mechanism includes a first trigger rod and a first helical coil wound around the trigger rod. When an overcurrent occurs, the first helical coil generates a magnetic field that causes the first trigger rod to slide. The trigger rod slides to trigger the trip unit. After the trip unit is triggered, the conductive plate rotates, thereby breaking the circuit between the conductive plate and the inlet terminal of the contact mechanism. The operating mechanism also includes a pull rod for the operator to operate; rotation of the pull rod resets the trip unit and the conductive plate.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: when the circuit fluctuates, the instantaneous current in the circuit will exceed the normal current, thereby triggering the trip unit to disconnect the circuit. At this time, the operator needs to manually pull the lever to reset, which is cumbersome. Summary of the Invention

[0005] To address the issue of cumbersome manual resetting required due to circuit fluctuations causing tripping, this application provides an automatic reclosing residual current circuit breaker.

[0006] This application provides an automatic reclosing residual current circuit breaker, which adopts the following technical solution: An automatic reclosing residual current circuit breaker includes a housing, an operating mechanism and a contact mechanism disposed within the housing, and a reset mechanism disposed on the housing. The reset mechanism is used to reset a tripping lever caused by circuit fluctuations. The reset mechanism includes a main housing, within which a rotating shaft is rotatable. The rotating shaft is connected to and coaxially rotates with the rotating shaft of the operating mechanism's lever. A reset rod is disposed on the rotating shaft. The reset mechanism also includes a reset component and a trigger component disposed within the main housing. The reset component is used to actuate the reset rod to rotate the rotating shaft, and the trigger component is used to trigger the reset component to actuate the reset rod.

[0007] By adopting the above technical solution, after a trip caused by current fluctuations, when the current fluctuations end and the current returns to normal, the triggering component will trigger the reset component to work. The reset component will push the reset rod to rotate the shaft, thereby driving the pull rod to reset and rotate, thus realizing automatic closing. This reduces the probability of tripping due to current fluctuations and the need for frequent manual closing by the staff, greatly facilitating the staff.

[0008] Optionally, the reset assembly includes a second trigger rod and a second spiral coil wound on the second trigger rod. A first permanent magnet is disposed on the second spiral coil. The second spiral coil is used to generate a magnetic field when energized, so that the second trigger rod cooperates with the first permanent magnet to slide and push the reset rod.

[0009] By adopting the above technical solution, when the trigger component triggers the reset component to work, the second spiral coil will be turned on, thereby generating a magnetic field to give the second trigger rod polarity, and it will slide under the magnetic force of the first permanent magnet, thereby causing the second trigger rod to push the reset rod and drive the rotating shaft to rotate. This allows the rotating shaft to rotate without the need to add a driving component, resulting in lower cost.

[0010] Optionally, the triggering assembly includes a third trigger rod and a third spiral coil wound on the third trigger rod. The second spiral coil has first contacts at both ends. The third trigger rod has a second contact that contacts the first contacts to achieve electrical connection. The third spiral coil generates a magnetic field when energized. The third trigger rod slides under the action of the magnetic field to make the second contact contact the first contact. The third spiral coil is electrically connected to the inlet end of the contact mechanism, and the second contact is electrically connected to the inlet end of the contact mechanism.

[0011] By adopting the above technical solution, when the current is normal, the magnetic field generated by the conduction of the third spiral coil just causes the third trigger rod to slide to the position where the first contact and the second contact make contact and conduct. This allows the control of the second spiral coil to conduct and cause the shaft to reset and rotate. However, once the current fluctuates, and the current is less than or greater than the normal current, the third trigger rod slides to the equilibrium position. At this time, the first contact and the second contact do not make contact, causing the second spiral coil to be disconnected and releasing the resistance to the reset rod. This achieves control over the operation of the reset component. The second trigger rod will only be triggered to slide and push the reset rod when the current is within the normal operating range.

[0012] Optionally, a battery and a compensation processor are electrically connected to the third spiral coil. The output terminal of the battery is electrically connected to the output terminal of the contact mechanism. A current detection module for detecting current is provided on the output terminal of the contact mechanism. The current detection module outputs a corresponding current detection signal to the compensation processor. The compensation processor includes a database for storing current thresholds and processes the current detection signal. A control module for controlling the output of the battery is provided on the battery. When the current at the output terminal of the contact mechanism is less than the threshold, the compensation processor outputs a corresponding control signal to the control module, causing the battery to output current.

[0013] By adopting the above technical solution, after the third spiral coil and the second spiral coil are turned on, the current is output to the storage battery for storage. When the current at the output end of the contact mechanism decreases due to fluctuations, the current detection module outputs a corresponding current detection signal to the compensation processor. The compensation processor outputs a corresponding control signal to the control module to control the battery output current to ensure the magnitude of the current output at the output end of the contact mechanism. This reduces the probability that the current fluctuation at the input end of the contact mechanism will affect the magnitude of the current at the output end of the contact mechanism, and improves the current stability at the output end.

[0014] Optionally, a switching box is included, in which both the housing and the main housing are disposed. The side wall of the switching box is provided with an inlet clamp and an outlet clamp for electrical connection with external wires. The outlet clamp is electrically connected to the outlet end of the contact mechanism. A conductive spring block extends and retracts on the inner wall of the switching box, and the conductive spring block is used for electrical connection with the inlet end of the contact mechanism. A switching cavity is formed in the side wall of the switching box between the inlet clamp and the corresponding conductive spring block. A switching block slides within the switching cavity. A conductive wire electrically connected to the outlet clamp is also embedded in the side wall of the switching box. The sliding of the switching block is used to electrically connect the conductive spring block to the inlet clamp, or the sliding of the switching block is used to electrically connect the inlet clamp to the conductive wire.

[0015] By adopting the above technical solution, the wires are connected to the inlet and outlet clamps, and the housing is placed into the switching box. The telescopic conductive spring block abuts against the inlet end of the contact mechanism. The sliding of the switching block controls the electrical connection of the conductive spring block to the inlet clamp. The sliding switching block can also electrically connect the inlet clamp to the conductive line, thereby disconnecting the circuit inside the housing from the external circuit. This allows the operator to replace the housing while the external circuit is connected through the conductive line, enabling live maintenance of the housing. This reduces the production time gap when the equipment is powered off, extends processing time, and improves production efficiency.

[0016] Optionally, a control block is provided on the conductive spring block. The control block is used to push the switching block to slide between the conductive spring block and the inlet clamp block to achieve electrical connection. A reset spring is provided between the switching block and the inner wall of the switching cavity. The reset spring is used to pull the switching block to slide between the end of the inlet clamp block and the end of the conductive line to achieve electrical connection.

[0017] By adopting the above technical solution, when the conductive spring block retracts into the side wall of the switching box, it will cause the control block to slide against the side wall of the switching block, thereby causing the switching block to slide towards the position between the conductive spring block and the inlet clamp block. When the conductive spring block extends towards the internal cavity of the switching box, the control block releases its contact with the switching block. Under the elastic force of the return spring, the switching block will slide towards the position between the inlet clamp block and the end of the conductive wire, thereby realizing automatic switching. When the housing is placed into the switching box, the switching block automatically slides between the conductive spring block and the inlet clamp block. When the housing is taken out of the switching box, the switching block automatically slides between the inlet clamp block and the end of the conductive wire, automatically switching the circuit to the conductive line, thus realizing automatic circuit switching.

[0018] Optionally, the switching block is provided with an insulating layer. When the switching block slides to the point where it is electrically connected between the end of the inlet clamp block and the end of the conductor, the insulating layer covers and seals the opening of the switching cavity to achieve insulation. An insulating strip is provided around the switching block, and the insulating strip is used to abut against the inner wall of the switching cavity to achieve insulation.

[0019] By adopting the above technical solution, the insulation layer is used to achieve insulation and sealing of the opening surface of the switching cavity, reducing the leakage of current from the opening surface of the switching cavity and improving safety.

[0020] Optionally, a control hole is provided through the side wall of the switching box, and an insulating sheet is provided on the inner wall of the control hole to block the opening surface of the control hole. An unlocking rod and a push rod slide inside the control hole. The unlocking rod and the push rod are located on both sides of the insulating sheet. The push rod is used to push the unlocking rod, and the unlocking rod is used to push the housing out from the state where the conductive spring block is in contact with the conductive block.

[0021] By adopting the above technical solution, the operator can push the top rod to drive the unlocking rod, which in turn pushes the housing to slide inside the switching box. This releases the housing from contact with the conductive spring block, allowing the switching block to slide first between the end of the conductive wire and the inlet clamp block. After the circuit is switched, the opening of the switching cavity is insulated and sealed by the insulating layer and insulating strip. Then the switching box can be opened to remove the housing, which further improves safety and protects the operator.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Automatic closing reduces the probability of tripping due to current fluctuations, thus reducing the need for frequent manual closing by staff and greatly facilitating their work.

[0023] 2. It enables live maintenance of the housing, reducing the downtime during equipment power outages, extending processing time, and improving production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an automatic reclosing leakage circuit breaker according to an embodiment of this application.

[0025] Figure 2 This is a schematic diagram showing the exploded structure of the shell.

[0026] Figure 3 This is an exploded structural diagram highlighting the reset mechanism.

[0027] Figure 4 This is a module diagram of a storage battery.

[0028] Figure 5 It is along Figure 2 A cross-sectional view of line AA in the middle.

[0029] Figure 6 It is along Figure 1 A cross-sectional view of the BB line.

[0030] Figure 7 This is a structural diagram highlighting the conductive spring block and the switching block.

[0031] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Reset mechanism; 21. Main housing; 22. Rotating shaft; 23. Reset rod; 3. Reset assembly; 31. Second trigger rod; 311. First ring; 32. Second spiral coil; 321. First permanent magnet; 4. Trigger assembly; 41. Third trigger rod; 411. Second ring; 42. Third spiral coil; 421. Second permanent magnet; 43. First contact; 44. Second contact; 45. Storage 5. Battery; 6. Current detection module; 7. Control module; 8. Switching box; 9. Inlet clamp; 10. Cover; 11. Outlet clamp; 12. Conductive spring block; 13. Conductive spring piece; 14. Switching cavity; 15. Switching block; 16. Conductive wire; 17. Control block; 18. Reset spring; 19. Control groove; 20. Insulating layer; 10. Insulating strip; 11. Control hole; 22. Insulating sheet; 33. Unlocking rod; 44. Top rod. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0033] This application discloses an automatic reclosing residual current circuit breaker. (Refer to...) Figure 1 and Figure 2 and Figure 3 The automatic reclosing residual current circuit breaker includes a housing 1, an operating mechanism and a contact mechanism installed inside the housing 1, and a reset mechanism 2 installed outside the housing 1. The reset mechanism 2 is used to reset the lever that has tripped due to circuit fluctuations. The reset mechanism 2 includes a main housing 21, which is fixedly connected to the outer wall of the housing 1. A rotating shaft 22 is rotatable inside the main housing 21. The rotating shaft 22 passes through the side wall of the housing 1 and is fixedly connected to the rotation shaft of the lever of the operating mechanism. The length direction of the rotating shaft 22 is the same as the length direction of the lever's rotation shaft and they rotate coaxially. A reset rod 23 is fixedly connected to the end of the rotating shaft 22 located inside the main housing 21. The length direction of the reset rod 23 is perpendicular to the length direction of the rotating shaft 22.

[0034] Reference Figure 3 The reset mechanism 2 also includes a reset component 3 and a trigger component 4 installed in the main housing 21. The reset component 3 is used to push the reset rod 23 to rotate the shaft 22, and the trigger component 4 is used to trigger the reset component 3 to push the reset rod 23.

[0035] Reference Figure 3 The reset assembly 3 includes a second trigger rod 31 and a second spiral coil 32 wound around the second trigger rod 31. A first ring body 311 is fixedly connected to the inner wall of the main housing 21. The second spiral coil 32 is circumferentially wrapped around the outer wall of the first ring body 311. The second trigger rod 31 is slidably inserted into the first ring body 311, that is, the second spiral coil 32 is circumferentially wrapped around the outside of the second trigger rod 31. A first permanent magnet 321 is fixedly connected to the end of the first ring body 311 away from the reset rod 23. The second spiral coil 32 is used to generate a magnetic field when energized. The generated magnetic field will give the second trigger rod 31 a polarity. At this time, the polarity of the end of the second trigger rod 31 near the first permanent magnet 321 is the same as the polarity of the end of the first permanent magnet 321 near the second trigger rod 31, so that the second trigger rod 31 slides away from the first permanent magnet 321, pushing the reset rod 23 to rotate the shaft 22 to reset. In this embodiment, the second trigger rod 31 is made of iron core.

[0036] Reference Figure 3 The trigger assembly 4 includes a third trigger rod 41 and a third spiral coil 42 wound around the third trigger rod 41. A second ring body 411 is fixedly connected to the inner wall of the main shell 21. The third spiral coil 42 is circumferentially wrapped around the second ring body 411, and the third trigger rod 41 slides inside the second ring body 411. First contacts 43 are fixedly connected to both ends of the second spiral coil 32. Two second contacts 44 are fixedly connected to the third trigger rod 41 for contacting the first contacts 43 to achieve electrical connection. In this embodiment, both the first contacts 43 and the second contacts 44 are made of conductive metal.

[0037] Reference Figure 2 and Figure 3 A second permanent magnet 421 is fixedly connected to the inner wall of the end of the second ring 411 away from the second contact 44. When the third spiral coil 42 is energized, it generates a magnetic field, which imparts polarity to the third trigger rod 41. At this time, the polarity of the end of the third trigger rod 41 near the second permanent magnet 421 is the same as the polarity of the end of the second permanent magnet 421 near the third trigger rod 41, thus causing the third trigger rod 41 to slide under the action of magnetic force. The two second contacts 44 are electrically connected to the inlet and outlet ends of the contact mechanism, respectively, and the two ends of the third spiral coil 42 are electrically connected to the inlet and outlet ends of the contact mechanism, respectively. In this embodiment, the portion of the third trigger rod 41 between the second contacts 44 is made of insulating material, while the other parts of the third trigger rod 41 are made of an iron core.

[0038] Reference Figure 3 If the current in the third spiral coil 42 is the normal operating current, the third trigger rod 41 will slide to the position where the second contact 44 contacts the first contact 43, thereby making the two ends of the third spiral coil 42 electrically connected to the inlet and outlet ends of the contact mechanism to achieve conduction.

[0039] Reference Figure 3 and Figure 4 A battery 45 and a compensation processor are electrically connected between the end of the third spiral coil 42 and the output terminal of the contact mechanism. One end of the second spiral coil 32 and the third spiral coil 42 are connected to the input terminal of the contact mechanism, while the other end of the second spiral coil 32 and the third spiral coil 42 are electrically connected to the input terminal of the battery 45. The output terminal of the battery 45 is electrically connected to the output terminal of the contact mechanism, and a current detection module 5 for detecting current is installed on the output terminal of the contact mechanism. The current detection module 5 detects the current at the output terminal of the contact mechanism and outputs a corresponding current detection signal to the compensation processor.

[0040] Reference Figure 4 The compensation processor includes a database for storing current thresholds. After receiving a current detection signal, the compensation processor compares it with the current thresholds in the database and outputs a corresponding control signal. A control module 51 is installed on the battery 45 to control its output. When the current at the output terminal of the compensation processor's contact mechanism is less than the threshold value corresponding to the control signal, the control module 51 receives the control signal and controls the battery 45 to output current. When the current at the output terminal of the compensation processor's contact mechanism is greater than the threshold value corresponding to the control signal, the control module 51 receives the control signal and controls the battery 45 to stop outputting current.

[0041] Reference Figure 1 and Figure 2It also includes a switching box 6 and a cover 611. The housing 1 and the main housing 21 are both installed inside the switching box 6. The cover 611 is used to cover the opening of the switching box 6 and then fix it with bolts. In this embodiment, both the switching box 6 and the cover 611 are made of insulating plastic.

[0042] Reference Figure 1 and Figure 2 and Figure 5 The outer wall of the switching box 6 is provided with an inlet clamp 61 and an outlet clamp 62 for electrical connection with external wires. The inlet clamp 61 and the outlet clamp 62 are threaded with fixing bolts. The side wall around the opening of the switching box 6 is provided with a socket hole. The user inserts and tightens the fixing bolt through the socket hole to clamp and fix the wire in the inlet clamp 61 and the outlet clamp 62. The socket opening is sealed and insulated by the cover 611.

[0043] Reference Figure 5 and Figure 6 and Figure 7 A conductive spring block 63 extends and retracts on the inner wall of the switching box 6. The conductive spring block 63 extends and retracts in the direction of penetrating deeper into the switching box 6 or retracting into the side wall of the switching box 6. In this embodiment, the conductive spring block 63 is made of conductive metal. The conductive spring block 63 is used to abut against the inlet end of the contact mechanism to achieve electrical connection. A conductive spring piece 631 is fixedly connected to the end of the outlet clamp block 62 to abut against the outlet end of the contact mechanism to achieve electrical connection. A switching cavity 64 is opened in the side wall of the switching box 6 between the inlet clamp block 61 and the corresponding conductive spring block 63. A switching block 65 slides in the switching cavity 64. The switching block 65 slides along the position between the inlet clamp block 61 and the corresponding conductive spring block 63.

[0044] Reference Figure 6 and Figure 7 A conductive wire 66 is also embedded in the side wall of the switching box 6. One end of the conductive wire 66 is fixedly connected to the outgoing clamp 62, and the other end of the conductive wire 66 extends towards the incoming clamp 61, but does not contact the incoming clamp 61. The other end of the conductive wire 66 and the incoming clamp 61 are located on one side of the switching block 65, while the conductive spring block 63 is located on the other side of the switching block 65. When the switching block 65 slides between the conductive spring block 63 and the incoming clamp block 61, both sides of the switching block 65 will simultaneously contact the ends of the conductive spring block 63 and the incoming clamp block 61, thereby electrically connecting the conductive spring block 63 and the incoming clamp block 61. When the switching block 65 continues to slide down, the side wall of the switching block 65 will contact the other end of the conductive wire 66, thus electrically connecting the incoming clamp block 61 and the conductive wire 66.

[0045] Reference Figure 6 and Figure 7A control block 7 is fixedly connected to the conductive spring block 63. A control groove 711 for sliding the control block 7 is provided on the inner wall of the switching cavity 64. The control block 7 is used to slide against the end side wall of the switching block 65 away from the conductive spring block 63. The control block 7 is inclined towards the side wall of the switching block 65. The more the inclined side wall of the control block 7 is away from the conductive spring block 63, the further away it is from the switching block 65. The inclined side wall of the control block 7 is used to guide the switching block 65 to slide between the conductive spring block 63 and the inlet clamp block 61.

[0046] Reference Figure 6 and Figure 7 A reset spring 71 is fixedly connected between the side wall of the switching block 65 and the inner wall of the switching cavity 64. The reset spring 71 extends and retracts along the sliding direction of the switching block 65. The reset spring 71 is used to pull the switching block 65 to slide between the end of the inlet clamp block 61 and the end of the conductor 66 to achieve electrical connection.

[0047] Reference Figure 5 and Figure 6 and Figure 7 An insulating layer 72 is fixedly connected to the side wall of the switching block 65 facing the conduction spring block 63. The insulating layer 72 is located on the side wall of the switching block 65 facing the conduction spring block 63 and away from the control block 7. When the switching block 65 slides to the point where the end of the inlet clamp block 61 and the end of the conduction line 66 are electrically connected, the insulating layer 72 covers and seals the opening surface of the switching cavity 64 to achieve insulation. An insulating strip 73 is fixedly connected around the switching block 65. The insulating strip 73 is circumferentially fixed around the outside of the insulating layer 72. The insulating strip 73 is used to abut against the inner wall of the switching cavity 64 to achieve insulation.

[0048] Reference Figure 6 A control hole 8 extends through the side wall of the switching box 6. An insulating sheet 81 is fixedly connected to the inner wall of the control hole 8, sealing the opening of the control hole 8. In this embodiment, the insulating sheet 81 is made of elastic insulating rubber. An unlocking rod 82 and a push rod 83 slide within the control hole 8. The outer wall of the unlocking rod 82 is in contact with the inner wall of the control hole 8, and the outer wall of the push rod 83 is in contact with the inner wall of the control hole 8. The unlocking rod 82 and the push rod 83 are located on opposite sides of the insulating sheet 81. The end of the unlocking rod 82 is fixedly connected to the side wall of the insulating sheet 81 facing the inside of the switching box 6, and the end of the push rod 83 is fixedly connected to the side wall of the insulating sheet 81 facing away from the inside of the switching box 6. The unlocking rod 82 extends to the outside of the switching box 6. The push rod 83 is used to actuate the insulating sheet 81 to deform and drive the unlocking rod 82 to slide. The unlocking rod 82 is used to push the housing 1 out from the state where the conductive spring block 63 is in contact with the conductive state.

[0049] Reference Figure 2 and Figure 7The ends of the inlet and outlet terminals of the contact mechanism on the housing 1 are flush with the outer wall of the housing 1. The side wall of the conductive spring block 63 facing the opening of the switching box 6 is inclined. The further the side wall of the inclined conductive spring block 63 is from the position of its corresponding inlet clamp block 61 or outlet clamp block 62, the further away it is from the opening of the switching box 6.

[0050] The implementation principle of the automatic reclosing leakage circuit breaker in this application embodiment is as follows: When the current in the circuit fluctuates and the current magnitude is greater than the normal current, the current on the third spiral coil 42 increases, resulting in an increase in the magnetic field generated by the third spiral coil 42. This causes the third trigger rod 41 to continue sliding away from the second permanent magnet 421. At this time, the first contact 43 and the second contact 44 are disengaged, causing the second spiral coil 32 to be open-circuited. The second trigger rod 31 loses its polarity, thus causing the reset rod 23 to lose its resisting force. At this time, the electromagnetic mechanism inside the housing 1 will trigger the trip unit, causing the lever to trip and rotate. When the current fluctuation ends and the current returns to normal, the magnetic field generated by the third spiral coil 42 will return to normal, causing the third trigger rod 41 to slide back to the position where the first contact 43 and the second contact 44 are in contact. This causes the second spiral coil 32 to conduct and generate a magnetic field, thereby giving the second trigger rod 31 polarity. Under the magnetic force of the first permanent magnet 321, the second trigger rod pushes the reset rod 23, causing the shaft 22 to rotate, thus resetting the lever and restoring the circuit inside the housing 1 to work again, achieving automatic reset.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic reclosing residual current circuit breaker, comprising a housing (1), wherein an operating mechanism and a contact mechanism are disposed within the housing (1), characterized in that: The housing (1) is provided with a reset mechanism (2), which is used to reset the lever that tripped due to circuit fluctuations. The reset mechanism (2) includes a main housing (21), in which a rotating shaft (22) is rotatable. The rotating shaft (22) is connected to the rotating shaft of the lever of the operating mechanism and rotates coaxially. A reset rod (23) is provided on the rotating shaft (22). The reset mechanism (2) also includes a reset assembly (3) and a trigger assembly (4) provided in the main housing (21). The reset assembly (3) is used to push the reset rod (23) to rotate the rotating shaft (22). The trigger assembly (4) is used to trigger the reset assembly (3) to push the reset rod (23). The reset assembly (3) includes a second trigger rod (31) and a second spiral coil (32) wound on the second trigger rod (31). A first permanent magnet (321) is provided on the second spiral coil (32). The second spiral coil (32) is used to generate a magnetic field when energized. The second trigger rod (31) is engaged with the first permanent magnet (321) to slide and push the reset rod (23). The trigger assembly (4) includes a third trigger rod (41) and a third spiral coil (42) wound on the third trigger rod (41). The second spiral coil (32) has first contacts (43) at both ends. The third trigger rod (41) has second contacts (44) that contact the first contacts (43) to achieve electrical connection. The third spiral coil (42) The third trigger rod (41) is used to generate a magnetic field when energized. The third trigger rod (41) is slid under the action of the magnetic field to make the second contact (44) contact the first contact (43). The third spiral coil (42) is electrically connected to the inlet end of the contact mechanism. The second contact (44) is electrically connected to the inlet end of the contact mechanism. The two second contacts (44) are electrically connected to the inlet end and outlet end of the contact mechanism, respectively. The two ends of the third spiral coil (42) are electrically connected to the inlet end and outlet end of the contact mechanism, respectively.

2. The automatic reclosing residual current circuit breaker according to claim 1, characterized in that: The third spiral coil (42) and the second spiral coil (32) are electrically connected to a battery (45). The battery (45) is electrically connected to a compensation processor. The output end of the battery (45) is electrically connected to the output end of the contact mechanism. The output end of the contact mechanism is provided with a current detection module (5) for detecting current. The current detection module (5) outputs a corresponding current detection signal to the compensation processor. The compensation processor contains a database for storing current thresholds. The compensation processor is used to process the current detection signal. The battery (45) is provided with a control module (51) for controlling the output of the battery (45). When the current at the output end of the contact mechanism is less than the threshold, the compensation processor outputs a corresponding control signal to the control module (51) to make the battery (45) output current.

3. The automatic reclosing residual current circuit breaker according to claim 1, characterized in that: The system includes a switching box (6), in which the housing (1) and the main housing (21) are both disposed. The side wall of the switching box (6) is provided with an inlet clamp (61) and an outlet clamp (62) for electrical connection with external wires. The outlet clamp (62) is electrically connected to the outlet end of the contact mechanism. A conductive spring block (63) extends and retracts on the inner wall of the switching box (6). The conductive spring block (63) is used for electrical connection with the inlet end of the contact mechanism. The inlet clamp block (61)... 1) A switching cavity (64) is provided in the side wall of the switching box (6) between the corresponding conductive spring block (63). A switching block (65) slides in the switching cavity (64). A conductive line (66) electrically connected to the outgoing clamp block (62) is also embedded in the side wall of the switching box (6). The switching block (65) slides to make the conductive spring block (63) electrically connected to the incoming clamp block (61), or the switching block (65) slides to make the incoming clamp block (61) electrically connected to the conductive line (66).

4. The automatic reclosing residual current circuit breaker according to claim 3, characterized in that: A control block (7) is provided on the conductive spring block (63). The control block (7) is used to push the switching block (65) to slide between the conductive spring block (63) and the inlet clamp block (61) to achieve electrical connection. A reset spring (71) is provided between the switching block (65) and the inner wall of the switching cavity (64). The reset spring (71) is used to pull the switching block (65) to slide between the end of the inlet clamp block (61) and the end of the conductive line (66) to achieve electrical connection.

5. The automatic reclosing residual current circuit breaker according to claim 3, characterized in that: An insulating layer (72) is provided on the switching block (65). When the switching block (65) slides to the point where it is electrically connected to the end of the inlet clamp block (61) and the end of the conductor (66), the insulating layer (72) covers and seals the opening of the switching cavity (64) to achieve insulation. An insulating strip (73) is provided around the switching block (65). The insulating strip (73) is used to abut against the inner wall of the switching cavity (64) to achieve insulation.

6. The automatic reclosing residual current circuit breaker according to claim 3, characterized in that: The switching box (6) has a control hole (8) through its side wall. An insulating sheet (81) is provided on the inner wall of the control hole (8). The insulating sheet (81) blocks the opening of the control hole (8). An unlocking rod (82) and a push rod (83) slide inside the control hole (8). The unlocking rod (82) and the push rod (83) are located on both sides of the insulating sheet (81). The push rod (83) is used to push the unlocking rod (82). The unlocking rod (82) is used to push the housing (1) out from the state where the conductive spring block (63) is in contact with the conductive state.

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