Leakage protection device and residual current circuit breaker
By incorporating a flexible conductive element and a test button assembly in the leakage current protection device, the problem of coil damage caused by reversed input and output wire connections is solved, thus improving safety and reliability.
Patent Information
- Application Number
- CN202520265701.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-19
AI Technical Summary
If the incoming and outgoing lines of the existing leakage current protection device are reversed, the user's continuous operation of the test button may cause the coil to overheat and be damaged, leading to circuit breaker failure and increasing the risk of electrical faults.
Design a leakage current protection device that forms two breakpoints by setting an elastic conductive element and a test button assembly between the circuit board and the power line, ensuring that the circuit board is de-energized when the incoming and outgoing lines are reversed, thus preventing the coil from being continuously energized.
It effectively prevents coil overheating damage, improves the safety of leakage protection devices and circuit systems, and reduces the risk of electrical faults.
Smart Images
Figure CN223612346U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to the field of electrical devices, and more particularly, to a residual current circuit breaker and a residual current protection device. BACKGROUND
[0002] Circuit breakers are widely used in residential, commercial, and other places where personal safety is a high priority, to ensure the safety and stability of power supply. Circuit breakers can integrate overload protection, short circuit protection, and residual current protection, etc. They detect potential leakage by monitoring the current difference in the circuit in real time, and cut off the power supply as soon as an anomaly is found, such as current imbalance exceeding the safety threshold, which can effectively prevent electric shock accidents and electrical fires. SUMMARY
[0003] In a first aspect of the present disclosure, a residual current protection device is provided. The residual current protection device includes a housing, a circuit board disposed in the housing, a trip unit rotatably coupled to the housing and adapted to switch between an on position and an off position, a coil disposed in the housing and electrically connected to the circuit board, a slidable core slidably coupled to the coil and coupled to the trip unit, the slidable core being adapted to drive the trip unit to switch between the on position and the off position, a test button assembly coupled to the housing and adapted to be electrically connected to a power line in the housing, and an elastic conductive member disposed in the housing and including a first connecting end and a second connecting end, the first connecting end being electrically connected to the circuit board, and the second connecting end being coupled to the trip unit, wherein the second connecting end is disconnected from the test button assembly when the trip unit is in the off position, and the second connecting end is connected to the test button assembly when the trip unit is in the on position.
[0004] In some embodiments, the test button assembly includes a first conductive member adapted to be electrically connected to the second connecting end of the elastic conductive member, a second conductive member disposed adjacent to the first conductive member, and a test button slidably coupled to the housing and coupled to the second conductive member, the test button being adapted to drive the second conductive member to contact or separate from the first conductive member.
[0005] In some embodiments, the second conductive member includes a metal spring adapted to apply a force to the test button to slide the test button out of the housing.
[0006] In some embodiments, the residual current protection device further includes a support disposed in the housing and coupled to the elastic conductive member, the first conductive member, and the second conductive member.
[0007] In some embodiments, the elastic conductive member is located at a side of the support away from the tripping member, the support comprises a first through hole, the housing comprises a second through hole, and the tripping member comprises: a first driving portion, which is slidably coupled to the support within the first through hole, and the first driving portion is coupled to the second connecting end of the elastic conductive member; a second driving portion, which is slidably coupled to the housing within the second through hole, and the second driving portion is adapted to be coupled to a tripping assembly of the circuit protection module; and a third driving portion, which is coupled to the slidable core.
[0008] In some embodiments, the first driving portion comprises a limiting portion for limiting the second connecting end from being separated from the first driving portion.
[0009] In some embodiments, the limiting portion comprises a limiting protrusion.
[0010] In some embodiments, the tripping member further comprises a fourth driving portion, and the electric leakage protection device further comprises: a reset button, which is slidably coupled to the housing and coupled to the fourth driving portion.
[0011] In a second aspect of the present disclosure, a residual current circuit breaker is provided. The residual current circuit breaker comprises: an electric leakage protection device according to any one of the first aspect of the present disclosure; and a circuit protection module, which is disposed at a side of the housing outside the housing, and the circuit protection module comprises a tripping assembly, which is coupled to the tripping member.
[0012] In some embodiments, the side of the housing is provided with a mounting portion, and the residual current circuit breaker further comprises: a connecting member, which is coupled to the mounting portion and electrically connected to a power line, and the connecting member is detachably connected to the circuit protection module.
[0013] In embodiments of the present disclosure, the residual current protective device includes a housing, a circuit board, a trip unit, a coil, a slidable core, a test button assembly, and a resilient conductive member. The circuit board is disposed in the housing. The trip unit is rotatably coupled to the housing, and the trip unit is adapted to switch between a closed position and an open position. The coil is disposed in the housing and electrically connected with the circuit board. The slidable core is slidably coupled to the coil, and the slidable core is coupled to the trip unit. The slidable core is adapted to drive the trip unit to switch between the closed position and the open position. The test button assembly is coupled to the housing. The test button assembly is adapted to be electrically connected with a power line in the housing. The resilient conductive member is disposed in the housing. The resilient conductive member includes a first connecting end and a second connecting end. The first connecting end is electrically connected with the circuit board, and the second connecting end is coupled to the trip unit. In the case that the trip unit is in the open position, the second connecting end is disconnected with the test button assembly. In the case that the trip unit is in the closed position, the second connecting end is connected with the test button assembly. With this arrangement, the resilient conductive member is disposed on a test loop between the circuit board and the power line. The resilient conductive member and the test button assembly can form two breakpoints in the test loop. In the case that the trip unit is in the open position, the second connecting end of the resilient conductive member is disconnected with the test button assembly, and at this time, the test loop is also disconnected. In the case that the user reversely connects the incoming line and the outgoing line of the residual current protective device, the circuit board is powered off, and the user continuously operating the test button assembly to damage the coil can be avoided, and the safety of the residual current protective device and the circuit system is improved.
[0014] It should be understood that the content described in this content part is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail the following embodiments with reference to the accompanying drawings. In the drawings, the same or similar reference signs indicate the same or similar elements, in which:
[0016] Figure 1 A perspective view of a residual current protective device according to an embodiment of the present disclosure is shown;
[0017] Figure 2 A schematic view of an internal structure of a residual current protective device according to an embodiment of the present disclosure is shown, in which a coil and a slidable core are shown;
[0018] Figure 3 A schematic view of an internal structure of a residual current protective device according to an embodiment of the present disclosure is shown, in which a trip unit is in an open position;
[0019] Figure 4An internal structure diagram of the leakage protection device of the embodiment of the present disclosure is shown, wherein the tripping piece is shown in the closed position; and
[0020] Figure 5 A perspective view of the residual current circuit breaker of the embodiment of the present disclosure is shown, wherein the circuit protection module is shown.
[0021] BRIEF DESCRIPTION OF DRAWINGS
[0022] 100, leakage protection device; 200, residual current circuit breaker;
[0023] 10, housing; 11, second through hole; 12, reset button; 14, mounting portion; 15, power line; 16, connecting piece; 17, incoming line terminal; 18, outgoing line terminal;
[0024] 20, circuit board;
[0025] 30, tripping piece; 31, first driving portion; 311, limiting portion; 32, second driving portion; 33, third driving portion; 34, fourth driving portion;
[0026] 40, coil;
[0027] 50, slidable core;
[0028] 60, test button assembly; 61, first conductive piece; 62, second conductive piece; 63, test button;
[0029] 70, elastic conductive piece; 71, first connecting end; 72, second connecting end;
[0030] 80, support piece; 81, first through hole;
[0031] 90, circuit protection module. DETAILED DESCRIPTION
[0032] Preferred embodiments of the present disclosure will be described in more detail by making reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided so as to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.
[0033] The term "includes," "including," "has," "having," "contains" or "containing," and variations thereof, as used herein, mean "including, but not limited to." Unless otherwise specified, the term "or" as used herein means "and / or." The term "based on" means "based, at least in part, on." The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "a first," "a second," etc., and the like, as used herein, can refer to different or the same objects.
[0034] In some conventional residual current circuit breakers, if a user reverses the incoming line position and the outgoing line position of the circuit breaker by mistake, the residual current protection module will always be in the energized state. In the case that the user continuously presses the test button, the magnetic tripping coil generates excessive heat due to continuous energization, which may eventually cause the coil to burn out. This situation not only makes the circuit breaker inoperable and unable to provide the necessary protection, but also poses a serious threat to the safety of the entire circuit system, increasing the risk of electrical faults such as short circuits or fires, thereby endangering personal and property safety.
[0035] Embodiments of the present disclosure provide a residual current protection device and a residual current circuit breaker. The residual current protection device includes a housing, a circuit board, a tripping member, a coil, a slidable core, a test button assembly, and a resilient conductive member. The circuit board is disposed in the housing. The tripping member is rotatably coupled to the housing and is adapted to switch between a closed position and an open position. The coil is disposed in the housing and is electrically connected to the circuit board. The slidable core is slidably coupled to the coil and is coupled to the tripping member. The slidable core is adapted to drive the tripping member to switch between the closed position and the open position. The test button assembly is coupled to the housing. The test button assembly is adapted to be electrically connected to a power supply line in the housing. The resilient conductive member is disposed in the housing. The resilient conductive member includes a first connecting end and a second connecting end. The first connecting end is electrically connected to the circuit board, and the second connecting end is coupled to the tripping member. In the case that the tripping member is in the open position, the second connecting end is disconnected from the test button assembly. In the case that the tripping member is in the closed position, the second connecting end is connected to the test button assembly. With this arrangement, the resilient conductive member is disposed on a test loop between the circuit board and the power supply line. The resilient conductive member and the test button assembly can form two breakpoints in the test loop. In the case that the tripping member is in the open position, the second connecting end of the resilient conductive member is disconnected from the test button assembly, and the test loop is also disconnected. In the case that the user reverses the incoming line and the outgoing line of the residual current protection device, the circuit board is de-energized, and the user's continuous operation of the test button assembly to damage the coil can be avoided, thereby improving the safety of the residual current protection device and the circuit system. The principles of the present disclosure will be described in detail below with reference to the accompanying drawings. Figures 1 to 5
[0036] As Figures 1 to 4 As shown, the leakage current protection device 100 includes a housing 10, a circuit board 20, a tripping element 30, a coil 40, a sliding core 50, a test button assembly 60, and a resilient conductive element 70. Inlet terminals 17 and outlet terminals 18 are mounted on the housing 10 of the leakage current protection device 100. A power line 15 is provided between each inlet terminal 17 and the corresponding outlet terminal 18; the power line 15 can be a neutral wire or a phase wire. In some embodiments, such as... Figure 2 and Figure 3 As shown, there is one phase line and one neutral line, which can constitute a single-phase circuit. In other embodiments, there can be multiple phase lines, such as three, and one neutral line, thus constituting a three-phase circuit.
[0037] Circuit board 20 is housed within housing 10 and can be electrically connected to a current transformer within housing 10. Under normal circumstances, the current flowing into and out of a load should be equal. When leakage occurs in the circuit, some current will be lost through unexpected paths (such as a person or ground), causing the inflow and outflow currents to become unbalanced. Current transformers, arranged around all the power lines 15 of the circuit, can detect this imbalance. Once leakage occurs, the vector sum of the currents flowing through the transformer is not zero, and the current transformer will induce a small current signal. This signal is amplified and processed by electronic components on circuit board 20. If the detected leakage current exceeds a preset safety threshold, the protection device will quickly activate and cut off the power supply to protect personnel and equipment safety.
[0038] like Figure 2 As shown, the trip unit 30 is rotatably coupled to the housing 10, and the trip unit 30 is adapted to switch between a closed position and an open position. As an example, a pin may be provided on the trip unit 30, and a pin hole may be provided on the housing 10, into which the pin is inserted, thereby allowing the trip unit 30 to rotate about the pin.
[0039] like Figure 2 As shown, coil 40 is disposed within housing 10 and connected to circuit board 20. Sliding core 50 is disposed within coil 40 and can slide within coil 40. Here, coil 40 and sliding core 50 constitute a magnetic trip assembly. Sliding core 50 is coupled to tripping element 30 and can drive tripping element 30 to move. When sliding core 50 moves, it can drive tripping element 30 to switch between the closed and open positions. When an abnormal current (such as leakage or overload) is detected, the electromagnetic force generated by coil 40 can drive sliding core 50 to move, thereby causing tripping element 30 to quickly switch from the closed position to the open position, thus cutting off the power supply and preventing accidents.
[0040] The test button assembly 60 is a component in the residual current device 100 for checking whether the residual current protection function is working properly. The test button assembly 60 is coupled to the housing 10 and is adapted to electrically connect with the power supply line 15 inside the housing 10. The test button assembly 60 can form a break point in the test circuit. When the user operates the test button assembly 60, a fault condition can be simulated, thereby verifying whether the residual current device 100 is functioning properly.
[0041] As shown in Figure 3 and Figure 4 , the resilient conductive member 70 is disposed inside the housing 10. The resilient conductive member 70 includes a first connecting end 71 and a second connecting end 72. The first connecting end 71 can electrically connect with the circuit board 20, and the second connecting end 72 is coupled to the tripping member 30. The tripping member 30 can drive the second connecting end 72 to move when the tripping member 30 moves. The resilient conductive member 70 can form another break point in the test circuit. As shown in Figure 3 , when the tripping member 30 is in the open position, the second connecting end 72 of the resilient conductive member 70 is disconnected from the test button assembly 60, and at this time the test circuit is also interrupted. As shown in Figure 4 , when the tripping member 30 is in the closed position, the second connecting end 72 of the resilient conductive member 70 remains in the connected state with the test button assembly 60, ensuring the integrity of the test circuit.
[0042] In this way, the resilient conductive member 70 and the test button assembly 60 can form two break points in the test circuit. In the case where the tripping member 30 is in the open position, the second connecting end 72 of the resilient conductive member 70 is disconnected from the test button assembly 60, and at this time the test circuit is also interrupted. When the user mistakenly reverses the incoming and outgoing lines of the residual current device 100, the circuit board 20 will automatically power off due to the loss of power supply, thereby avoiding the risk of coil 40 damage caused by the user continuously operating the test button assembly 60.
[0043] In some embodiments, as shown in Figure 3 and Figure 4 , the test button assembly 60 includes a first conductive member 61, a second conductive member 62, and a test button 63. The first conductive member 61 is disposed adjacent to the resilient conductive member 70 and is adapted to electrically connect with the second connecting end 72 of the resilient conductive member 70. When the tripping member 30 is in the open position, the tripping member 30 drives the second connecting end 72 of the resilient conductive member 70 to disconnect from the first conductive member 61. When the tripping member 30 is in the closed position, the tripping member 30 drives the second connecting end 72 of the resilient conductive member 70 to connect with the first conductive member 61. The second conductive member 62 is disposed adjacent to the first conductive member 61. The test button 63 is slidably coupled to the housing 10, and the test button 63 is coupled to the second conductive member 62.
[0044] In this way, the user can manually control the contact or separation between the second conductive member 62 and the first conductive member 61 by pressing the test button 63. When the user presses the test button 63, it pushes the second conductive member 62 to move or deform, so that the second conductive member 62 is in contact with the first conductive member 61, thereby forming a closed test loop. When the test button 63 is released, the second conductive member 62 returns to the original position and is separated from the first conductive member 61, thereby breaking the test loop.
[0045] In some embodiments, as shown in Figure 3 and Figure 4 , the second conductive member 62 includes a metal spring. The metal spring has the functions of electrical conduction and necessary elastic reset. The metal spring can automatically slide out of the shell 10 and return to the original position after the user completes the test by applying a force to the test button 63. In this way, the metal spring can reduce the number of required components, thereby simplifying the internal structure of the leakage protection device 100.
[0046] As an example, the metal spring can be a copper sheet. The copper sheet that has been bent to form a metal spring has excellent electrical conductivity and elasticity.
[0047] It should be understood that in other embodiments, the metal spring can also be a stainless steel spring or an alloy spring, and the present disclosure is not intended to limit the specific material and shape.
[0048] In some embodiments, as shown in Figure 3 and Figure 4 , the leakage protection device 100 further includes a support member 80. The support member 80 is arranged in the shell 10 and is coupled to the elastic conductive member 70, the first conductive member 61 and the second conductive member 62. In this way, the support member 80 can maintain the relative positional relationship between the elastic conductive member 70, the first conductive member 61 and the second conductive member 62. When the trip member 30 or the test button 63 is operated, the relevant circuit contact points can be stably connected or disconnected, avoiding the problem of poor contact caused by component displacement, and improving the reliability and safety of the system.
[0049] As an example, as shown in Figure 3 and Figure 4 , the support member 80 can adopt the form of a support plate. A plurality of limiting structures can be arranged on the support plate. The elastic conductive member 70, the first conductive member 61 and the second conductive member 62 are respectively connected to the corresponding limiting structures, so that each component can perform its function at a fixed position.
[0050] In some embodiments, as shown in Figure 3As shown, the elastic conductive element 70 is located on the side of the support 80 away from the tripping element 30. The support 80 includes a first through hole 81, and the housing 10 includes a second through hole 11. The tripping element 30 includes a first driving part 31, a second driving part 32, and a third driving part 33. As an example, the first driving part 31, the second driving part 32, and the third driving part 33 can be a cantilever structure and can rotate about the pin of the tripping element 30. The first driving part 31 is disposed in the first through hole 81 and is slidably coupled to the support 80. The first driving part 31 is coupled to the second connecting end 72 of the elastic conductive element 70. The second driving part 32 is disposed in the second through hole 11 and is slidably coupled to the housing 10. The second driving part 32 can be coupled to the tripping assembly of the circuit breaker protection module 90. The third driving part 33 is coupled to the slidable core 50.
[0051] In this way, when the coil 40 drives the sliding core 50 to move, the sliding core 50 can drive the third driving part 33 to rotate around the pin. During this process, the first driving part 31 and the second driving part 32 also rotate around the pin on the tripping member 30. The first driving part 31 can slide within the first through hole 81, and during the sliding process, it can drive the second connecting end 72 of the elastic conductive member 70 to move, thereby separating the second connecting end 72 of the elastic conductive member 70 from the first conductive member 61. The second driving part 32 can slide within the second through hole 11, and during the sliding process, it can drive the tripping assembly of the circuit breaker protection module 90 to trip, thereby disconnecting the main circuit.
[0052] In some embodiments, such as Figure 4 As shown, the first drive unit 31 includes a limiting part 311 for preventing the second connecting end 72 from separating from the first drive unit 31. In this way, when the tripping member 30 switches between the closed position and the open position, the limiting part 311 can cause the second connecting end 72 of the elastic conductive member 70 to abut against the first drive unit 31, thereby contacting or separating from the first conductive member 61.
[0053] As an example, such as Figures 2 to 4 As shown, the limiting portion 311 includes a limiting protrusion. The limiting protrusion can prevent the second connecting end 72 of the elastic conductive member 70 from slipping off the end of the first driving portion 31, thereby increasing the stability of the connection between the second connecting end 72 and the first driving portion 31.
[0054] In other embodiments, the limiting part 311 may also be a limiting groove or a limiting hole, etc. The limiting groove or limiting hole can restrict the separation of the second connecting end 72 from the first driving part 31. This disclosure is not intended to limit the specific structure.
[0055] In some embodiments, such as Figure 2As shown, the trip unit 30 further comprises a fourth driving portion 34. The residual current protection device 100 further comprises a reset button 12, which is slidably coupled to the housing 10 and coupled to the fourth driving portion 34. In this way, upon detection of a leakage current, the coil 40 can drive the slidable core 50 to move, so as to move the trip unit 30 from the closed position to the open position. A user can operate the reset button 12 to move the fourth driving portion 34, so as to switch the trip unit 30 from the open position to the closed position.
[0056] Embodiments of the present disclosure further provide a residual current circuit breaker 200. As shown in Figure 2 The residual current circuit breaker 200 comprises the residual current protection device 100 of any of the above embodiments and a circuit protection module 90. The circuit protection module 90 can be a miniature circuit breaker, which is arranged outside the housing 10 on one side of the housing 10. A trip assembly is arranged in the circuit protection module 90, and the trip assembly is coupled to the trip unit 30. In this way, when a leakage current is detected, the trip unit 30 will be switched to the open position, which will trigger the trip assembly to perform a trip operation, so as to cut off the main circuit, thereby avoiding potential safety risks.
[0057] In some embodiments, as shown in Figure 2 and Figure 5 One side of the housing 10 is provided with a mounting portion 14. The residual current circuit breaker 200 further comprises a connecting piece 16, which is coupled to the mounting portion 14 and electrically connected to the power supply line 15 in the housing 10. The connecting piece 16 is detachably connected to the circuit protection module 90.
[0058] As shown in Figure 1 Figure 5 Figure 1 The mounting portion 14 can be a mounting platform on one side of the housing 10, which is used to carry and fix the circuit protection module 90. In some embodiments, the top surface of the mounting portion 14 has the same size as the bottom surface of the circuit protection module 90, so that the side surface of the residual current circuit breaker 200 can be flush when the circuit protection module 90 is placed on the mounting portion 14. The connecting piece 16 is arranged on the mounting portion 14, one end of the connecting piece 16 is electrically connected to the power supply line 15 in the housing 10, and the other end of the connecting piece 16 can be detachably connected to the circuit protection module 90, thereby playing the role of a quick connector.
[0059] In this way, when the circuit protection module 90 is placed on the mounting portion 14, not only the residual current protection assembly and the circuit protection module 90 can be quickly fixed, but also the electrical connection between the circuit protection module 90 and the power supply line 15 can be established, and the mechanical connection between the trip assembly and the trip unit 30 can be established.
[0060] Having described above several embodiments of the disclosure, any modifications and variations that fall within the scope of the described embodiments are also contemplated. It is also contemplated that the application covered by the claims extends to any alternative embodiment, adaptations, or variations of the various embodiments described above, and to any and all equivalents. The terms "comprises", "comprising", "comprised of" and "comprising" when used in this specification are taken to specify the presence of stated features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
Claims
1. An electric leakage protection device (100), characterized in that, The circuit breaker comprises: a housing (10); a circuit board (20) disposed in the housing (10); a trip unit (30) rotatably coupled to the housing (10) and adapted to switch between a closed position and an open position; a coil (40) disposed in the housing (10) and electrically connected to the circuit board (20); a slidable core (50) slidably coupled to the coil (40) and coupled to the trip unit (30), the slidable core (50) being adapted to drive the trip unit (30) to switch between the closed position and the open position; a test button assembly (60) coupled to the housing (10) and adapted to be electrically connected to a power line (15) in the housing (10); a resilient conductive member (70) disposed in the housing (10) and comprising a first connecting end (71) electrically connected to the circuit board (20) and a second connecting end (72) coupled to the trip unit (30), wherein the second connecting end (72) is disconnected from the test button assembly (60) when the trip unit (30) is in the open position and connected to the test button assembly (60) when the trip unit (30) is in the closed position.
2. The leakage protection device (100) according to claim 1, characterized in that The test button assembly (60) comprises: a first conductive member (61) adapted to be electrically connected to the second connecting end (72) of the resilient conductive member (70); a second conductive member (62) disposed adjacent to the first conductive member (61); and a test button (63) slidably coupled to the housing (10) and coupled to the second conductive member (62), the test button (63) being adapted to drive the second conductive member (62) to contact or separate from the first conductive member (61).
3. The leakage protection device (100) according to claim 2, characterized in that The second conductive member (62) comprises a metal spring adapted to apply a force to the test button (63) to slide the test button (63) out of the housing (10).
4. The leakage protection device (100) according to claim 3, characterized in that Further comprising: a support member (80) disposed in the housing (10) and coupled to the resilient conductive member (70), the first conductive member (61) and the second conductive member (62).
5. The leakage protection device (100) according to claim 4, characterized in that The resilient conductive member (70) is located on a side of the support member (80) away from the trip unit (30), the support member (80) comprises a first through hole (81), the housing (10) comprises a second through hole (11), and the trip unit (30) comprises: a first driving portion (31) slidably coupled to the support member (80) in the first through hole (81) and coupled to the second connecting end (72) of the resilient conductive member (70); a second driving portion (32) slidably coupled to the housing (10) in the second through hole (11) and adapted to be coupled to a trip assembly of a circuit protection module (90); and A third driving part (33) is coupled to the slidable core (50).
6. The leakage protection device (100) according to claim 5, characterized in that The first driving part (31) comprises a limiting part (311) for limiting the second connecting end (72) from being separated from the first driving part (31).
7. The leakage protection device (100) according to claim 6, characterized in that The limiting part (311) comprises a limiting protrusion.
8. The leakage protection device (100) according to any one of claims 5 to 7, characterized in that The tripping piece (30) further comprises a fourth driving part (34), and the residual current circuit breaker further comprises: A reset button (12) is slidably coupled to the shell (10) and coupled to the fourth driving part (34).
9. A residual current circuit breaker (200), characterized in that Comprise: The residual current circuit breaker (100) according to any one of claims 1 to 8; And A circuit protection module (90) is arranged on one side of the shell (10) outside the shell (10), and the circuit protection module (90) comprises a tripping assembly coupled to the tripping piece (30).
10. The residual current circuit breaker (200) according to claim 9, characterized in that, One side of the shell (10) is provided with a mounting part (14), and the residual current circuit breaker (200) further comprises: A connecting piece (16) is coupled to the mounting part (14) and electrically connected with the power line (15), and the connecting piece (16) is detachably connected to the circuit protection module (90).