Leakage circuit breaker
By designing the residual current tripping pole and the circuit breaker pole to be arranged side by side in the residual current circuit breaker, and using the zero-sequence current transformer to trigger the tripping, the problem of continuous conduction of the test circuit when the circuit breaker is reverse-connected is solved, thus realizing the reliability and safety of the circuit breaker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CHINT ELECTRIC CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-24
AI Technical Summary
The existing modular residual current circuit breaker has a problem where the test circuit remains conductive when the circuit breaker is reverse-connected, causing the residual current trip unit to burn out.
Design a residual current circuit breaker, including residual current tripping poles and circuit breaker poles arranged side by side. The tripping device is triggered by the induced current through a zero-sequence current transformer to form a main circuit and a test circuit. Ensure that the test circuit can be disconnected under both positive and negative wiring conditions to avoid continuous conduction.
This effectively solves the problem of leakage trip unit burnout caused by continuous conduction of the test circuit when the circuit breaker is reverse-connected, ensuring the reliability and safety of the circuit breaker.
Smart Images
Figure CN224554298U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a leakage current circuit breaker. Background Technology
[0002] The modular residual current circuit breaker consists of an upper circuit breaker and a lower residual current protection element. The two parts are connected as one unit by a mechanical structure, and the residual current protection function is achieved by driving the circuit breaker to trip.
[0003] In the existing technology, a test circuit needs to be designed to verify the reliability of the leakage protection function of the assembled residual current circuit breaker. Due to the structural design, the test circuit is generally powered from the outgoing terminal. When the circuit breaker is reverse-connected (the outgoing terminal is connected to the power supply), the test circuit will continue to conduct during the pressing of the test button, which will cause phenomena such as the leakage trip unit to burn out.
[0004] That is, existing modular residual current circuit breakers draw power from the outgoing terminal, which poses a problem that the test circuit will continue to conduct when the circuit breaker is reversed, causing the residual current trip unit to burn out. Utility Model Content
[0005] The purpose of this utility model is to provide a residual current circuit breaker to solve the problem that the test circuit will continue to conduct when the circuit breaker is reverse-connected, causing the residual current trip unit to burn out.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] This utility model provides a residual current circuit breaker (RCCB), which includes residual current tripping terminals and at least one circuit breaker terminal arranged side by side. Each residual current tripping terminal includes a base and a first terminal block, a residual current trip unit, a zero-sequence current transformer, a first power-taking component, a connector, a wire, and an operating component. Each circuit breaker terminal includes a contact mechanism and a second terminal block. The contact mechanism is electrically connected to both the first and second terminal blocks. A first end of the connector is electrically connected to the second terminal block via the wire, and the wire passes through the zero-sequence current transformer. A first end of the first power-taking component contacts the first terminal block. The operating component, when pressed, causes a second end of the first power-taking component to contact a second end of the connector. The zero-sequence current transformer senses current and triggers the residual current trip unit to trip, thereby causing the contact mechanism to disconnect the electrical connection between the first and second terminal blocks.
[0008] As an optional technical solution for a residual current circuit breaker, the operating component is slidably connected to the base, the first power-taking component is rotatably connected to the base, and the operating component is moved under pressure to drive the first power-taking component to rotate, so that the first end of the first power-taking component abuts against the first terminal block, and the second end of the first power-taking component abuts against the second end of the connector.
[0009] As an optional technical solution for a residual current circuit breaker, the operating member is located on the side of the second end of the first power-taking member away from the connecting member. The operating member is pressed and moves to press against the second end of the first power-taking member so that the second end of the first power-taking member contacts the second end of the connecting member.
[0010] As an optional technical solution for a residual current circuit breaker, the operating member is provided with a positioning notch, and the second end of the first power taking member passes through the positioning notch and extends at least partially between the operating member and the connecting member.
[0011] As an optional technical solution for a residual current circuit breaker, the first terminal block is provided with a receiving notch, and the first end of the first power taking component passes through the receiving notch and contacts the inner wall of the receiving notch.
[0012] As an optional technical solution for a residual current circuit breaker, the base is provided with a positioning groove, and the connector is engaged in the positioning groove.
[0013] As an optional technical solution for a residual current circuit breaker, the connector includes a first connecting segment and a second connecting segment connected to the first connecting segment. The second connecting segment forms an angle with the extending direction of the first connecting segment. The connection point between the second connecting segment and the first connecting segment is engaged in the positioning groove. The first connecting segment is electrically connected to the second terminal block through the wire. The second connecting segment is used to contact the first power receiving component.
[0014] As an optional technical solution for a residual current circuit breaker, the positioning slot has an opening, one end of the conductor passes through the opening and is connected to the connector, and the other end of the conductor passes through the zero-sequence transformer and is electrically connected to the second terminal block.
[0015] As an optional technical solution for a residual current circuit breaker, the circuit breaker pole further includes a housing, a contact mechanism and a second terminal block disposed within the housing, and a socket provided on the housing; the residual current tripping pole further includes a second power taking component, one end of which is connected to the other end of the conductor, and the other end of which passes through the base and the socket and is electrically connected to the second terminal block.
[0016] As an optional technical solution for a residual current circuit breaker, the first power-taking component is a power-taking spring, and the first power-taking component elastically abuts against the first terminal block; and / or the second power-taking component is a power-taking spring, and the second power-taking component elastically abuts against the second terminal block.
[0017] Beneficial effects:
[0018] This utility model provides a residual current circuit breaker (RCCB), which includes residual current tripping poles and at least one circuit breaker pole arranged side by side. The residual current tripping pole includes a base and a first terminal block disposed on the base, a residual current trip unit, a zero-sequence current transformer, a first power taking component, a connector, a wire, and an operating component. The circuit breaker pole includes a contact mechanism and a second terminal block. The contact mechanism is electrically connected to the first terminal block and the second terminal block. The first end of the connector is electrically connected to the second terminal block through a wire, and the wire passes through the zero-sequence current transformer. The first end of the first power taking component is in contact with the first terminal block. When the operating component is pressed, it causes the second end of the first power taking component to contact the second end of the connector. The zero-sequence current transformer is used to sense current and trigger the residual current circuit breaker to trip, so that the contact mechanism cuts off the electrical connection between the first terminal block and the second terminal block. A modular residual current circuit breaker (RCCB) is constructed by arranging the residual current trip pole and at least one circuit breaker pole side by side. The main circuit is formed by the contact mechanism electrically connected to the first and second terminal blocks. Corresponding components are mounted on the RCCB base to form a test circuit. Since the first power-taking component is in contact with the first terminal block, and the connecting component is electrically connected to the second terminal block, the test circuit can simultaneously draw power from both the input and output terminals, regardless of whether the wiring is reversed (i.e., one terminal block is the input and the other the output). When the operating component is pressed, causing the first power-taking component to contact the connecting component, the test circuit conducts to simulate leakage current. The zero-sequence current transformer sends a signal to the RCCB through induced current, triggering the RCCB to trip. This causes the contact mechanism to disconnect, severing the electrical connection between the first and second terminal blocks, and disconnecting the main circuit of the circuit breaker pole. At this point, the test circuit is also disconnected, preventing continuous conduction and effectively solving the problem of RCCB burnout caused by reverse wiring. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the residual current circuit breaker provided in this embodiment of the utility model;
[0020] Figure 2 This is a partial structural schematic diagram of the residual current circuit breaker provided in the embodiment of this utility model from a first-view perspective;
[0021] Figure 3 This is an electrical schematic diagram of a residual current circuit breaker provided in an embodiment of this utility model;
[0022] Figure 4 This is a partial structural schematic diagram of the residual current circuit breaker provided in the embodiment of this utility model from a second perspective;
[0023] Figure 5 This is a schematic diagram of the structure of the first terminal block, the second terminal block, and part of the leakage trip electrode provided in this embodiment of the utility model;
[0024] Figure 6This is a schematic diagram of the structure of the first terminal block, the first power supply component, and the operating component provided in this embodiment of the utility model;
[0025] Figure 7 This is a schematic diagram of the structure of the first power-taking component provided in this embodiment of the utility model;
[0026] Figure 8 This is a schematic diagram of the structure of the second power-taking component provided in this embodiment of the utility model.
[0027] In the picture:
[0028] 1. Residual current tripping electrode; 10. Base; 101. Positioning slot; 11. First terminal block; 111. Receiving notch; 12. Residual current trip unit; 13. Zero-sequence current transformer; 14. First power take-off component; 141. First bending section; 142. Second bending section; 15. Connector; 151. Second connecting section; 152. First connecting section; 16. Wire; 17. Operating component; 171. Positioning notch; 18. Second power take-off component; 181. Third bending section; 182. Fourth bending section;
[0029] 2. Circuit breaker pole; 20. Housing; 201. Socket; 21. Second terminal block. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0034] like Figures 1 to 5 As shown, this embodiment provides a residual current circuit breaker (RCCB). The RCCB includes a residual current tripping pole 1 and at least one circuit breaker pole 2 arranged side by side. The residual current tripping pole 1 includes a base 10 and a first terminal block 11, a residual current tripping device 12, a zero-sequence current transformer 13, a first power taking component 14, a connector 15, a wire 16, and an operating component 17 disposed on the base 10. The circuit breaker pole 2 includes a contact mechanism and a second terminal block 21. The contact mechanism is electrically connected to the first terminal block 11 and the second terminal block 21. The first end of the connector 15 is electrically connected to the second terminal block 21 through the wire 16, and the wire 16 passes through the zero-sequence current transformer 13. The first end of the first power taking component 14 is in contact with the first terminal block 11. The operating component 17 is pressed to drive the second end of the first power taking component 14 to contact the second end of the connector 15. The zero-sequence current transformer 13 is used to sense current and trigger the residual current tripping device 12 to trip, so that the contact mechanism cuts off the electrical connection between the first terminal block 11 and the second terminal block 21.
[0035] A modular residual current circuit breaker (RCCB) is assembled by arranging the residual current tripping pole 1 and at least one circuit breaker pole 2 side by side. The main circuit is formed by the contact mechanism electrically connected to the first terminal block 11 and the second terminal block 21. Corresponding components are arranged on the base 10 of the residual current tripping pole 1 to form a test circuit. Since the first power-taking component 14 is in contact with the first terminal block 11 and the connecting component 15 is electrically connected to the second terminal block 21, regardless of whether the wiring is positive or negative (i.e., one of the first terminal block 11 and the second terminal block 21 serves as the input terminal and the other as the output terminal), the test circuit can... Power is drawn from the inlet and outlet terminals respectively. When the operating component 17 is pressed, it causes the first power-drawing component 14 to contact the connecting component 15. The test circuit is turned on to simulate leakage current. The zero-sequence transformer 13 sends a signal to the leakage trip unit 12 through the induced current, triggering the leakage trip unit 12 to trip, thereby causing the contact mechanism to disconnect and cut off the electrical connection between the first terminal block 11 and the second terminal block 21. The main circuit of the circuit breaker pole 2 is disconnected. At this time, the test circuit is also cut off. The test circuit will not continue to conduct, effectively solving the problem of leakage trip unit 12 burning out caused by reverse wiring.
[0036] See Figure 3 In this embodiment, the second terminal block 21 serves as the input terminal, and the first terminal block 11 serves as the output terminal; the residual current circuit breaker is an electronic residual current circuit breaker; since the current generated in the test circuit needs to undergo signal processing and conversion, the residual current tripping pole 1 also includes a circuit board, which is connected to the main circuit of the circuit breaker pole 2. The zero-sequence current transformer 13 is electrically connected to the circuit board, the first power taking component 14 is connected to the circuit board through the first terminal block 11 and the circuit breaker pole 2, and the connecting component 15 is connected to the circuit board. The first power taking component 14 and the connecting component 15 form the break point of the test circuit. In other embodiments, if the residual current circuit breaker is an electromagnetic residual current circuit breaker, the residual current can be directly generated by mechanical triggering to drive the residual current tripping device 12, so there is no need to set up a circuit board to participate in signal processing.
[0037] The residual current device 12 is electrically or communicatively connected to the zero-sequence current transformer 13. The contact mechanism includes a moving contact and a stationary contact. Normally, when the main circuit is in a conducting state, the current flows sequentially from the power source to the input terminal, stationary contact, moving contact, output terminal, load, and finally back to the power source. When the zero-sequence current transformer 13 controls the residual current device 12 to trip, the residual current device 12 mechanically drives the moving contact to separate from the stationary contact, at which point the main circuit is in an open state. The specific structure and principle of the contact mechanism and the residual current device 12 are designed with reference to existing technology and will not be elaborated upon here.
[0038] When the operating component 17 is pressed, the operating component 17 drives the first power-taking component 14 to contact the connecting component 15, and the test circuit is connected to simulate leakage current. The zero-sequence current transformer 13 senses the current and sends a signal to the leakage current trip unit 12 to control the leakage current trip unit 12 to act, so that the position of the main circuit break point is disconnected (that is, the moving contact and the stationary contact are separated, thereby cutting off the electrical connection between the input end and the output end). Since the test circuit is connected to the input end and the output end respectively, the test circuit will also be disconnected and will not be continuously connected, regardless of whether it is connected in the correct direction or in the reverse direction, thus solving the problem of leakage current trip unit 12 burning out or circuit board exploding.
[0039] Specifically, the operating component 17 is slidably connected to the base 10, and the first power-taking component 14 is rotatably connected to the base 10. When the operating component 17 is pressed and moved, it causes the first power-taking component 14 to rotate, so that the first end of the first power-taking component 14 abuts against the first terminal block 11, and the second end of the first power-taking component 14 abuts against the second end of the connector 15. By setting the first power-taking component 14 to be rotatable and using the sliding trigger of the operating component 17, both rapid triggering or release can be ensured, and space can be saved and the layout optimized.
[0040] In this embodiment, the first power-taking component 14 is a power-taking spring, which elastically abuts against the first terminal block 11. By setting the power-taking spring, the energy storage and release of the power-taking spring can be used to quickly complete the action, which helps to simplify the transmission structure and can also shorten the action time to achieve rapid connection or disconnection; the power-taking spring can provide a certain contact pressure to avoid poor contact due to loosening, and can ensure the reliability of contact even after long-term use and wear.
[0041] See Figure 5 and Figure 6 Optionally, the first terminal block 11 is provided with a receiving notch 111, and the first end of the first power receiving component 14 passes through the receiving notch 111 and contacts the inner wall of the receiving notch 111. By providing a receiving notch 111 on the first terminal block 11 and passing the first end of the first power receiving component 14 through the receiving notch 111, it is possible to ensure that the first terminal block 11 contacts the inner wall of the receiving notch 111, and the receiving notch 111 can also restrict the position of the first end of the first power receiving component 14, preventing the first power receiving component 14 from separating from the first terminal block 11 due to positional displacement.
[0042] In this embodiment, the receiving notch 111 is disposed at the end of the first terminal block 11 and forms an opening on the end face of the first terminal block 11. The diameter of the receiving notch 111 gradually increases in the direction close to the first power taking member 14. The first power taking member 14 can be inserted into the receiving notch 111 from the opening on the end face of the first terminal block 11.
[0043] See Figure 4 and Figure 5Optionally, the base 10 is provided with a positioning groove 101, and the connector 15 is engaged in the positioning groove 101. By providing a positioning groove 101 on the base 10 and engaging the connector 15 in the positioning groove 101, the accuracy of the installation position of the connector 15 is ensured, as well as the convenience of disassembly and maintenance.
[0044] Specifically, the connector 15 includes a first connecting segment 152 and a second connecting segment 151. The second connecting segment 151 and the first connecting segment 152 extend at an angle. The first connecting segment 152 is connected to the second connecting segment 151, and the connection point is engaged in the positioning groove 101. The first connecting segment 152 is electrically connected to the second terminal block 21 via a wire 16. The second connecting segment 151 is used to contact the first power-taking component 14. By setting the connector 15 into two segments, namely the connected second connecting segment 151 and the first connecting segment 152, and engaging the connection point of the second connecting segment 151 and the first connecting segment 152 in the positioning groove 101, the second connecting segment 151 can cooperate with the first power-taking component 14, and the first connecting segment 152 can be electrically connected to the second terminal block 21.
[0045] In this embodiment, the connector 15 is a spring sheet; the connector 15 is an integral structure, with both the second connecting segment 151 and the first connecting segment 152 being sheet-like, and the included angle between the planes containing the second connecting segment 151 and the first connecting segment 152 ranging from 90° to 120°; the connector 15 is L-shaped, and the positioning groove 101 is also L-shaped. By setting the connector 15 as a spring sheet, the first power-taking component 14 can elastically contact the connector 15 to take power, and the deformation pressure can ensure tight contact, providing good resistance to temperature changes and mechanical vibration, and avoiding poor contact due to oxidation or vibration.
[0046] Furthermore, the operating member 17 is located on the side of the second end of the first power-taking member 14 away from the connector 15. The operating member 17 is pressed and moves to press against the second end of the first power-taking member 14, so that the second end of the first power-taking member 14 contacts the second end of the connector 15. By positioning the operating member 17 on the side of the first power-taking member 14 away from the connector 15, it is convenient to operate the operating member 17, and the operating member 17 can press against the second end of the first power-taking member 14, directly pressing the second end of the first power-taking member 14 against the second end of the connector 15, ensuring the accuracy of operation.
[0047] See Figure 6Optionally, the operating member 17 is provided with a positioning notch 171, and the second end of the first power-taking member 14 passes through the positioning notch 171 and extends at least partially between the operating member 17 and the connecting member 15. By providing the positioning notch 171 on the operating member 17, the relative position of the second end of the first power-taking member 14 and the operating member 17 is limited, avoiding the first power-taking member 14 from not being driven when the operating member 17 is pressed due to positional deviation, thus affecting the use of the residual current circuit breaker. In this embodiment, the positioning notch 171 is a U-shaped notch, and the two side walls of the U-shaped notch are used to limit the second end of the first power-taking member 14.
[0048] Furthermore, the positioning slot 101 has an opening, through which one end of the wire 16 passes and connects to the connector 15, and the other end of the wire 16 passes through the zero-sequence current transformer 13 and is electrically connected to the second terminal block 21. By providing an opening in the positioning slot 101, and having one end of the wire 16 pass through the opening of the positioning slot 101 and connect to the connector 15, while the other end passes through the zero-sequence current transformer 13 and is electrically connected to the second terminal block 21, the zero-sequence current transformer 13 can be more sensitive in identifying current and has better anti-interference capability.
[0049] Optionally, the circuit breaker pole 2 further includes a housing 20, with the contact mechanism and the second terminal block 21 disposed within the housing 20. The housing 20 has a socket 201. The leakage trip pole 1 further includes a second power take-off element 18, one end of which is connected to the other end of the wire 16, and the other end of which passes through the base 10 and the socket 201 and is electrically connected to the second terminal block 21. The wire 16 is disposed on the base 10 and connected to the connector 15. By setting the wire 16 to be electrically connected to the second terminal block 21 through the second power take-off element 18, the second power take-off element 18 can pass through the socket 201 of the base 10 and the housing 20, avoiding poor contact that may be caused by oxidation, wear, or fatigue due to the wire 16 passing through the base 10 and the socket 201.
[0050] In this embodiment, the second power-taking component 18 is a power-taking spring, and the second power-taking component 18 elastically abuts against the second terminal block 21. By setting the second power-taking component 18 as a power-taking spring, the power-taking spring can provide a certain contact pressure, avoiding poor contact between the second power-taking component 18 and the second terminal block 21 due to loosening.
[0051] See Figure 5 , Figure 7 and Figure 8The first power-taking component 14 includes a first twisted section, a first bent section 141, and a second bent section 142. The two ends of the first twisted section are connected to the first bent section 141 and the second bent section 142, respectively. The first bent section 141 elastically abuts against the first terminal block 11, and the second bent section 142 is used to contact the connector 15. The second power-taking component 18 includes a second twisted section, a third bent section 181, and a fourth bent section 182. The two ends of the second twisted section are connected to the third bent section 181 and the fourth bent section 182, respectively. The third bent section 181 is U-shaped and connected to the wire 16. The fourth bent section 182 passes sequentially through the base 10 and the socket 201 and elastically abuts against the second terminal block 21. It is understood that the specific shape and size of the first power-taking component 14 and the second power-taking component 18 can be adjusted according to the actual installation position.
[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A residual current circuit breaker, characterized in that, The circuit includes a residual current tripping electrode (1) and at least one circuit breaker electrode (2) arranged side by side. The residual current tripping electrode (1) includes a base (10) and a first terminal block (11), a residual current trip unit (12), a zero-sequence transformer (13), a first power-taking component (14), a connector (15), a wire (16), and an operating component (17) disposed on the base (10). The circuit breaker electrode (2) includes a contact mechanism and a second terminal block (21). The contact mechanism is electrically connected to the first terminal block (11) and the second terminal block (21). The connector (15) is a first power-taking component. The first terminal is electrically connected to the second terminal block (21) via the wire (16), and the wire (16) passes through the zero-sequence transformer (13). The first end of the first power taking part (14) contacts the first terminal block (11). The operating part (17) is pressed and drives the second end of the first power taking part (14) to contact the second end of the connector (15). The zero-sequence transformer (13) is used to sense the current and trigger the leakage trip device (12) to trip, so that the contact mechanism cuts off the electrical connection between the first terminal block (11) and the second terminal block (21).
2. The residual current circuit breaker according to claim 1, characterized in that, The operating component (17) is slidably connected to the base (10), and the first power-taking component (14) is rotatably connected to the base (10). The operating component (17) is pressed and moved to drive the first power-taking component (14) to rotate, so that the first end of the first power-taking component (14) abuts against the first terminal block (11), and the second end of the first power-taking component (14) abuts against the second end of the connector (15).
3. The residual current circuit breaker according to claim 2, characterized in that, The operating member (17) is located on the side of the second end of the first power-taking member (14) away from the connector (15). The operating member (17) is pressed and moves against the second end of the first power-taking member (14) so that the second end of the first power-taking member (14) contacts the second end of the connector (15).
4. The residual current circuit breaker according to claim 3, characterized in that, The operating component (17) is provided with a positioning notch (171), and the second end of the first power-taking component (14) passes through the positioning notch (171) and extends at least partially between the operating component (17) and the connector (15).
5. The residual current circuit breaker according to claim 1, characterized in that, The first terminal block (11) is provided with a receiving notch (111), and the first end of the first power taking component (14) passes through the receiving notch (111) and contacts the inner wall of the receiving notch (111).
6. The residual current circuit breaker according to claim 1, characterized in that, The base (10) is provided with a positioning groove (101), and the connector (15) is engaged in the positioning groove (101).
7. The residual current circuit breaker according to claim 6, characterized in that, The connector (15) includes a first connecting segment (152) and a second connecting segment (151) connected to the first connecting segment (152). The second connecting segment (151) forms an angle with the extending direction of the first connecting segment (152). The connection between the second connecting segment (151) and the first connecting segment (152) is engaged in the positioning groove (101). The first connecting segment (152) is electrically connected to the second terminal block (21) through the wire (16). The second connecting segment (151) is used to contact the first power-taking component (14).
8. The residual current circuit breaker according to claim 6, characterized in that, The positioning groove (101) has an opening, one end of the wire (16) passes through the opening and is connected to the connector (15), and the other end of the wire (16) passes through the zero-sequence transformer (13) and is electrically connected to the second terminal block (21).
9. The residual current circuit breaker according to claim 8, characterized in that, The circuit breaker pole (2) also includes a housing (20), the contact mechanism and the second terminal block (21) are disposed inside the housing (20), and the housing (20) is provided with a socket (201); the leakage trip pole (1) also includes a second power taking component (18), one end of the second power taking component (18) is connected to the other end of the wire (16), and the other end of the second power taking component (18) passes through the base (10) and the socket (201) and is electrically connected to the second terminal block (21).
10. The residual current circuit breaker according to claim 9, characterized in that, The first power-taking component (14) is a power-taking spring, and the first power-taking component (14) elastically abuts against the first terminal block (11); and / or the second power-taking component (18) is a power-taking spring, and the second power-taking component (18) elastically abuts against the second terminal block (21).