A circuit breaker and a control method of a circuit breaker

Abstract

The application discloses a circuit breaker and a control method thereof, and relates to the technical field of electrical equipment. The circuit breaker comprises a body, a first leakage protection device, a second leakage protection device, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit and a central processing unit. The body is provided with an incoming line column and an outgoing line column. The first leakage protection device comprises a first power supply circuit, and the second leakage protection device comprises a second power supply circuit. The first switch unit is electrically connected with the incoming line column and the first power supply circuit. The second switch unit is electrically connected with the outgoing line column and the first power supply circuit. The third switch unit is electrically connected with the incoming line column and the second power supply circuit. The fourth switch unit is electrically connected with the outgoing line column and the second power supply circuit. The central processing unit is connected with the four switch units, and is used for adjusting the working states of the first power supply circuit and the second power supply circuit by controlling the actions of the four switch units, so that the continuous power supply test tripping of the circuit breaker is realized.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to a circuit breaker and a control method for the circuit breaker. Background Technology

[0002] Circuit breakers are primarily used to protect against electrical leakage faults in equipment and to protect against potentially fatal electric shocks. They also provide overload and short-circuit protection, protecting lines or motors from overload and short circuits. To ensure stable power supply, circuit breakers need to be tested and tripped. Current technology typically calculates and compares electrical current to determine if anyone is home when the circuit breaker is in use. If someone is home, a leakage current test trip is performed, and the user automatically restores power. While this protects residents' electrical safety, the automatic power outage disrupts normal power usage until it is restored. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a circuit breaker and a control method for the circuit breaker that overcomes or at least partially solves the above problems.

[0004] According to a first aspect of the present invention, a circuit breaker is provided, the circuit breaker comprising:

[0005] The main body is provided with multiple inlet terminals and multiple outlet terminals;

[0006] A first leakage current protection device is installed on the main body, wherein the first leakage current protection device includes a first power supply circuit;

[0007] A second leakage current protection device is installed on the main body, wherein the second leakage current protection device includes a second power supply circuit;

[0008] A first switching unit is located on the main body and is electrically connected to the input post and the signal input terminal of the first power supply circuit;

[0009] The second switching unit is located on the main body and is electrically connected to the output post and the signal output terminal of the first power supply circuit;

[0010] The third switching unit is located on the main body and is electrically connected to the input post and the signal input terminal of the second power supply circuit;

[0011] The fourth switching unit is located on the main body and is electrically connected to the output post and the signal output terminal of the second power supply circuit;

[0012] The central processing unit is electrically connected to the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit, respectively, and is used to adjust the working state of the first power supply circuit and the second power supply circuit by controlling the operation of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit, so as to realize the circuit breaker's uninterrupted power-off test tripping.

[0013] Optionally, the first leakage protection device can be detachably connected to the main body; and / or,

[0014] The second leakage protection device is detachably connected to the main body.

[0015] Optionally, the main body is provided with a plurality of conductive sockets, and the plurality of conductive sockets are electrically connected to the first switch unit, the second switch unit, the third switch unit and the fourth switch unit respectively.

[0016] The first leakage current protection device has multiple first conductor posts and multiple second conductor posts at both ends. The multiple first conductor posts are electrically connected to the signal input terminal of the first power supply circuit, and the multiple second conductor posts are electrically connected to the signal output terminal of the first power supply circuit. Furthermore, the first conductor posts and the second conductor posts are respectively plugged into the conductive socket to form an electrical connection, and the first leakage current protection device is fixed to the body.

[0017] The second leakage current protection device has multiple third conductor posts and multiple fourth conductor posts at both ends. The multiple third conductor posts are electrically connected to the signal input terminal of the second power supply circuit, and the multiple fourth conductor posts are electrically connected to the signal output terminal of the second power supply circuit. The third conductor posts and fourth conductor posts are respectively plugged into the conductive socket to form an electrical connection, and the second leakage current protection device is fixed to the body.

[0018] Optionally, the first leakage current protection device and the second leakage current protection device have the same structure and are installed side by side on the main body.

[0019] Optionally, the circuit breaker further includes:

[0020] A data acquisition device is located on the main body and electrically connected to the central processing unit for recording test jump-related data.

[0021] Optionally, the circuit breaker further includes:

[0022] A display device is located on the main body and electrically connected to the central processing unit for displaying the test jump-related data.

[0023] Optionally, the circuit breaker further includes:

[0024] A keyboard operating device is located on the main body and electrically connected to the central processing unit for receiving operating information.

[0025] Optionally, the circuit breaker further includes:

[0026] A fixed-value communication unit is located on the main body and electrically connected to the central processing unit to determine the test trip current value of the first leakage current protection device and / or the second leakage current protection device.

[0027] Optionally, the circuit breaker further includes:

[0028] A fixed grounding unit is located on the main body, wherein the fixed grounding unit is electrically connected to the central processing unit, the first leakage protection device and the second leakage protection device respectively, for the purpose of deriving the test trip current.

[0029] According to a second aspect of the present invention, a control method for a circuit breaker is provided, wherein the circuit breaker is any one of the circuit breakers described above, and the control method includes:

[0030] Obtain a test jump request, the test jump request including device identifier and test jump method, wherein the test jump method includes at least one of the following: no-load test jump and load test jump;

[0031] Based on the device identification, determine whether to use the first or second leakage protection device for the test trip;

[0032] If it is determined that the first leakage current protection device is used for a test trip, the first and second switch units are adjusted to operate according to the test trip method, and the third and fourth switch units are adjusted to be in a closed state, so as to supply power to the electrical load through the second leakage current protection device.

[0033] Control the first leakage protection device to perform a test trip;

[0034] If it is determined that the second leakage current protection device is used for a test trip, the third and fourth switch units are adjusted to operate according to the test trip method, and the first and second switch units are adjusted to be in a closed state so as to supply power to the electrical load through the first leakage current protection device.

[0035] Control the second leakage protection device to perform a test trip.

[0036] Compared with the prior art, the present invention includes a main body, a first leakage current protection device, a second leakage current protection device, a first switching unit, a second switching unit, a third switching unit, a fourth switching unit, and a central processing unit. The main body has multiple inlet terminals and multiple outlet terminals. The first leakage current protection device is mounted on the main body and includes a first power supply circuit. The second leakage current protection device is mounted on the main body and includes a second power supply circuit. The first switching unit is located on the main body and is electrically connected to the signal input terminal of the inlet terminals and the first power supply circuit. The second switching unit is located on the main body and is electrically connected to the signal output terminal of the first power supply circuit. The third switching unit is located on the main body and is electrically connected to the signal input terminal of the inlet terminals and the second power supply circuit. The fourth switching unit is located on the main body and is electrically connected to the signal output terminal of the outlet terminals and the second power supply circuit. The central processing unit is electrically connected to the first, second, third, and fourth switching units, respectively. It controls the operation of these units to regulate the working states of the first and second power supply circuits, enabling uninterrupted power-off test tripping of the circuit breakers. This test tripping effectively avoids power outages, improving the reliability of the power distribution network and reducing the inconvenience caused to users by power outages while eliminating potential electrical safety hazards.

[0037] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0039] In the attached diagram:

[0040] Figure 1 This is a schematic diagram of the structure of a circuit breaker provided in an embodiment of the present invention;

[0041] Figure 2 This is a flowchart illustrating the steps of a circuit breaker control method provided in an embodiment of the present invention;

[0042] Reference numerals: 1. Main body; 101. Inlet post; 102. Outlet post; 2. First leakage protection device; 201. First conductor post; 202. Second conductor post; 3. Second leakage protection device; 301. Third conductor post; 304. Fourth conductor post; 4. First switching unit; 5. Second switching unit; 6. Third switching unit; 7. Fourth switching unit; 8. Central processing unit; 9. Data acquisition device; 10. Display device; 11. Keyboard operation device; 12. Fixed value communication unit; 13. Fixed value grounding unit. Detailed Implementation

[0043] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] Reference Figure 1 This invention provides a circuit breaker, which may include a body 1, a first leakage current protection device 2, a second leakage current protection device 3, a first switching unit 4, a second switching unit 5, a third switching unit 6, a fourth switching unit 7, and a central processing unit 8, wherein:

[0045] The main body 1 is provided with multiple incoming terminals 101 and multiple outgoing terminals 102. The incoming terminals 101 are electrically connected to the power supply input lines, and the outgoing terminals 102 are electrically connected to the power supply output lines; alternatively, the outgoing terminals 102 can be understood as being electrically connected to the electrical load. The number of incoming terminals 101 and outgoing terminals 102 is the same, and the number of incoming terminals 101 is related to the number of power supply phases. For example, when the circuit breaker is used with a 220V power supply, the number of incoming terminals 101 is 3. When the circuit breaker is used with a 380V power supply, the number of incoming terminals 101 can be 4. Furthermore, to facilitate the distinction between the incoming terminals 101 and outgoing terminals 102, the incoming terminals 101 and outgoing terminals 102 are located at opposite ends of the main body 1.

[0046] The first leakage current protection device 2 is installed on the main body 1 and includes a first power supply circuit. The second leakage current protection device 3 is installed on the main body 1 and includes a second power supply circuit. The first and second power supply circuits can be three-phase circuits or single-phase circuits, etc., without further limitation. The first switching unit 4 is located on the main body 1 and is electrically connected to the input terminal 101 and the signal input terminal of the first power supply circuit. The second switching unit 5 is located on the main body 1 and is electrically connected to the output terminal 102 and the signal output terminal of the first power supply circuit. The third switching unit 6 is located on the main body 1 and is electrically connected to the input terminal 101 and the signal input terminal of the second power supply circuit. The fourth switching unit 7 is located on the main body 1 and is electrically connected to the output terminal 102 and the signal output terminal of the second power supply circuit. The electrical connection can be made physically by wires, etc. A receiving cavity is provided within the main body 1 to accommodate some electronic components and the wires used for electrical connection.

[0047] In one embodiment, the first leakage current protection device 2 and the second leakage current protection device 3 can be based on the existing circuit structure by adding a first power supply circuit and a second power supply circuit, respectively. For example, the first leakage current protection device 2 may include conventional functions in the prior art, such as an operation indicator, an on / off indicator trip button, a manual test trip button, and a set-value grounding test trip button.

[0048] The central processing unit 8 is electrically connected to the first switch unit 4, the second switch unit 5, the third switch unit 6, and the fourth switch unit 7, respectively. It controls the operation of these units to adjust the working states of the first and second power supply circuits, enabling the circuit breaker to perform uninterrupted tripping tests. The tripping test is used to check whether the leakage protection function of the first leakage current protection device 2 or the second leakage current protection device 3 is normal. When the user presses the tripping button, the first leakage current protection device 2 or the second leakage current protection device 3 successfully trips, indicating that its leakage protection function is normal. The central processing unit 8 can periodically generate leakage current and send it to the first leakage current protection device 2 or the second leakage current protection device 3, allowing the circuit breaker to perform automatic uninterrupted tripping tests. This tripping process effectively avoids power outages, improving the reliability of the power distribution network and reducing the inconvenience caused by power outages while eliminating potential electrical safety hazards.

[0049] The first switch unit 4, the second switch unit 5, the third switch unit 6, and the fourth switch unit 7 can be relay switches, or combinations of relay switches and corresponding relay control circuits. The relay control circuit can be any existing technology, and is not limited here.

[0050] In one optional embodiment of the invention, the first leakage current protection device 2 is detachably connected to the body 1; and / or, the second leakage current protection device 3 is detachably connected to the body 1. For example, the first leakage current protection device 2 and / or the second leakage current protection device 3 can be fixed to the body 1 by means of bolts, plugging, or snap-fitting. This allows for a modular design of the first leakage current protection device 2 and / or the second leakage current protection device 3, facilitating rapid replacement of the entire device when it is damaged, and simplifying maintenance and replacement.

[0051] In one optional embodiment of the invention, considering that the first leakage current protection device 2 and / or the second leakage current protection device 3 are modularly designed, it is necessary to fix the first leakage current protection device 2 and / or the second leakage current protection device 3 to the main body 1, and then electrically connect their corresponding power supply circuits to the corresponding switching units. Therefore, to further improve the detection and replacement efficiency of the leakage current protection devices, the main body 1 is provided with multiple conductive sockets, which are electrically connected to the first switching unit 4, the second switching unit 5, the third switching unit 6, and the fourth switching unit 7, respectively. For example, the walls of the conductive sockets can be made of conductive metal material.

[0052] The first leakage current protection device 2 has multiple first conductor posts 201 and multiple second conductor posts 202 at both ends. The first conductor posts 201 are electrically connected to the signal input terminal of the first power supply circuit, and the second conductor posts 202 are electrically connected to the signal output terminal of the first power supply circuit. Furthermore, the first conductor posts 201 and second conductor posts 202 are respectively plugged into the conductive sockets to form an electrical connection, thus fixing the first leakage current protection device 2 to the body 1. Therefore, when replacing the first leakage current protection device 2, the first conductor posts 201 and second conductor posts 202 can be directly plugged into the conductive sockets. This provides both electrical connection and fixation for the first leakage current protection device 2, further optimizing the product performance of the circuit breaker.

[0053] The second leakage current protection device 3 has multiple third conductor posts 301 and multiple fourth conductor posts 304 at both ends. The multiple third conductor posts 301 are electrically connected to the signal input terminal of the second power supply circuit, and the multiple fourth conductor posts 304 are electrically connected to the signal output terminal of the second power supply circuit. Furthermore, the third conductor posts 301 and fourth conductor posts 304 are respectively inserted into the conductive sockets to form an electrical connection, thus fixing the second leakage current protection device 3 to the body 1. Therefore, when replacing the second leakage current protection device 3, the third conductor posts 301 and fourth conductor posts 304 can be directly inserted into the conductive sockets. This provides both electrical connection and fixation for the second leakage current protection device 3, further optimizing the product performance of the circuit breaker.

[0054] In one optional embodiment of the invention, the first leakage current protection device 2 and the second leakage current protection device 3 have identical structures and are installed side by side on the body 1, for example, they can be arranged side by side on the body 1 in a left-right order. The identical structure of the first leakage current protection device 2 and the second leakage current protection device 3 can improve the adaptability of the leakage current protection devices and reduce production costs, thereby effectively controlling the production cost of the circuit breaker.

[0055] An optional embodiment of the invention, referring to... Figure 1 As shown, the circuit breaker may further include a data acquisition device 9, which is located on the body 1 and electrically connected to the central processing unit 8, for recording test trip related data. The test trip related data may include test trip method, test trip time, cumulative number of test trips, and test trip results. In one embodiment, the circuit breaker may further include a display device 10, which is located on the body 1 and electrically connected to the central processing unit 8, for displaying the test trip related data.

[0056] An optional embodiment of the invention, referring to... Figure 1 As shown, the circuit breaker may further include a keyboard operation device 11, which is located on the main body 1 and electrically connected to the central processing unit 8 for receiving operation information. For example, if the display interface corresponding to the display device 10 is too small, the central processing unit 8 can obtain corresponding operation information based on the user's editing operation on the keyboard operation device 11, and update the display data on the display interface according to the operation information. Thus, the user can use the keyboard operation device 11 to view test jump-related data, or other data besides the test jump-related data.

[0057] An optional embodiment of the invention, referring to... Figure 1 As shown, the circuit breaker may further include a setting communication unit 12, which is located on the main body 1 and electrically connected to the central processing unit 8. This unit is used to determine the tripping current value (also referred to as leakage current) of the first leakage current protection device 2 and / or the second leakage current protection device 3. The tripping current value can be dynamically set according to seasonal changes. For example, the setting communication unit 12 can communicate remotely with other control devices, thereby transmitting the current time to the central processing unit 8. The central processing unit 8 can then determine the current season based on the current time and generate a preset tripping current matching the current season. For example, the tripping current can be 30mA, 50mA, or 100mA.

[0058] In an optional embodiment of the invention, the circuit breaker may further include a setpoint grounding unit 13 located on the body 1. The setpoint grounding unit 13 is electrically connected to the central processing unit 8, the first residual current device 2, and the second residual current device 3, respectively, to guide the tripping current. For example, the setpoint grounding unit 13 is electrically connected to the first residual current device 2 and the second residual current device 3 via a fifth switching unit and a sixth switching unit, respectively. When the first residual current device 2 trips under no-load conditions (i.e., the second switching unit 5 is open and the first switching unit 4 is closed), the first residual current device 2 is electrically connected to the fifth switching unit. When the second residual current device 3 trips under no-load conditions (i.e., the fourth switching unit 7 is open and the third switching unit 6 is closed), the second residual current device 3 is electrically connected to the sixth switching unit. The operating states of the fifth and sixth switching units are controlled by the central processing unit 8. In one embodiment, the fixed grounding unit 13 may include at least one fixed grounding loop, wherein the maximum current borne by the fixed grounding loop is greater than or equal to the maximum test trip current. For example, the number of fixed grounding loops may be three, and the maximum current borne by each fixed grounding loop is 30mA, 50mA, and 100mA, respectively.

[0059] Reference Figure 2 As shown, this embodiment of the invention provides a control method for a circuit breaker, wherein the circuit breaker is any one of the circuit breakers described above, and the control method may include:

[0060] S201. Obtain a test jump request, wherein the test jump request includes a device identifier and a test jump method, wherein the test jump method includes at least one of the following: no-load test jump and load test jump.

[0061] Based on the device identification, determine whether to use the first leakage protection device 2 or the second leakage protection device 3 for the test trip.

[0062] S202. Determine whether to use the first leakage protection device 2 based on the device identification.

[0063] If yes, proceed to step S203; otherwise, proceed to step S205.

[0064] S203. Adjust the operation of the first switch unit 4 and the second switch unit 5 according to the trial trip method, and adjust the third switch unit 6 and the fourth switch unit 7 to the closed state, so as to supply power to the electrical load through the second leakage protection device 3.

[0065] S204. Control the first leakage protection device 2 to perform a test trip.

[0066] S205. Adjust the operation of the third switch unit 6 and the fourth switch unit 7 according to the trial trip method, and adjust the first switch unit 4 and the second switch unit 5 to the closed state, so as to supply power to the electrical load through the first leakage protection device 2.

[0067] S206. Control the second leakage protection device 3 to perform a test trip.

[0068] In this embodiment of the invention, the control method can be applied to the central processing unit 8. For example, it can obtain a trip request in response to the pressing of the manual trip button on the first leakage current protection device 2 or the second leakage current protection device 3, or in response to the pressing of the fixed grounding trip button on the first leakage current protection device 2 or the second leakage current protection device 3. The trip request includes at least a device identifier and a tripping method. The device identifier refers to the identifier used to distinguish between the first leakage current protection device 2 and the second leakage current protection device 3. For example, the device identifier corresponding to the first leakage current protection device 2 is A, and the device identifier corresponding to the second leakage current protection device 3 is B. Specifically, an unloaded trip is a trip performed when the electrical connection between the first power supply circuit or the second power supply circuit and the electrical load is disconnected; a load trip is a trip performed when the electrical connection between the first power supply circuit or the second power supply circuit and the electrical load is not disconnected.

[0069] Therefore, when the first leakage current protection device 2 performs a load test trip, the first switch unit 4 and the second switch unit 5 are both in the closed state, and the third switch unit 6 and the fourth switch unit 7 are in the closed state; when the first leakage current protection device 2 performs a no-load test trip, the first switch unit 4 is in the closed state, the second switch unit 5 is in the open state, and the third switch unit 6 and the fourth switch unit 7 are in the closed state.

[0070] When the second leakage current protection device 3 performs a load test trip, the first switch unit 4 and the second switch unit 5 are both in the closed state, and the third switch unit 6 and the fourth switch unit 7 are in the closed state; when the second leakage current protection device 3 performs a no-load test trip, the first switch unit 4 and the second switch unit 5 are in the open state, the third switch unit 6 is in the closed state, and the fourth switch unit 7 is in the open state.

[0071] After adjusting the operating states of the first switch unit 4, the second switch unit 5, the third switch unit 6, and the fourth switch unit 7, the first leakage current protection device 2 or the second leakage current protection device 3 is controlled to perform a test trip. The corresponding test trip data is then acquired and forwarded to the display device 10 for display.

[0072] In summary, this invention discloses a circuit breaker and its control method. The circuit breaker includes a body 1, a first residual current device (RCD) 2, a second RCD 3, a first switching unit 4, a second switching unit 5, a third switching unit 6, a fourth switching unit 7, and a central processing unit 8. The body 1 has multiple incoming terminals 101 and multiple outgoing terminals 102. The first RCD 2 is mounted on the body 1 and includes a first power supply circuit. The second RCD 3 is mounted on the body 1 and includes a second power supply circuit. The first switching unit 4 is located on the body 1 and is electrically connected to the incoming terminals 101 and the signal input terminal of the first power supply circuit. The second switching unit 5 is located on the body 1 and is electrically connected to the outgoing terminals 102 and the signal output terminal of the first power supply circuit. The third switching unit 6 is located on the body 1 and is electrically connected to the incoming terminals 101 and the signal input terminal of the second power supply circuit. The fourth switching unit 7 is located on the body 1 and is electrically connected to the outgoing terminals 102 and the signal output terminal of the second power supply circuit. The central processing unit 8 is electrically connected to the first switching unit 4, the second switching unit 5, the third switching unit 6, and the fourth switching unit 7, respectively. It controls the operation of the first switching unit 4, the second switching unit 5, the third switching unit 6, and the fourth switching unit 7 to adjust the operating states of the first and second power supply circuits, enabling uninterrupted power-off test tripping of the circuit breaker. This test tripping effectively avoids power outages, improving the reliability of the power distribution network and reducing the inconvenience caused to users by power outages while eliminating potential electrical safety hazards.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0074] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible, and therefore any combination of the above embodiments is an implementation scheme of the present invention. However, due to space limitations, this specification will not describe them in detail here.

[0075] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0076] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the invention above, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0077] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A circuit breaker, characterized in that, The circuit breaker includes: The main body (1) is provided with multiple inlet posts (101) and multiple outlet posts (102); A first leakage current protection device (2) is installed on the main body (1), wherein the first leakage current protection device (2) includes a first power supply circuit; The second leakage protection device (3) is installed on the main body (1), wherein the second leakage protection device (3) includes a second power supply circuit; The first switching unit (4) is located on the body (1) and is electrically connected to the input post (101) and the signal input terminal of the first power supply circuit; The second switching unit (5) is located on the body (1) and is electrically connected to the output post (102) and the signal output terminal of the first power supply circuit. The third switch unit (6) is located on the body (1) and is electrically connected to the input post (101) and the signal input terminal of the second power supply circuit; The fourth switch unit (7) is located on the body (1) and is electrically connected to the output post (102) and the signal output terminal of the second power supply circuit; The central processing unit (8) is electrically connected to the first switch unit (4), the second switch unit (5), the third switch unit (6) and the fourth switch unit (7) respectively, and is used to adjust the working state of the first power supply circuit and the second power supply circuit by controlling the operation of the first switch unit (4), the second switch unit (5), the third switch unit (6) and the fourth switch unit (7), so as to realize the circuit breaker's uninterrupted power-off test tripping.

2. The circuit breaker according to claim 1, characterized in that, The first leakage protection device (2) is detachably connected to the main body (1); and / or, The second leakage protection device (3) is detachably connected to the main body (1).

3. The circuit breaker according to claim 2, characterized in that, The main body (1) is provided with multiple conductive sockets, and the multiple conductive sockets are electrically connected to the first switch unit (4), the second switch unit (5), the third switch unit (6) and the fourth switch unit (7) respectively. The first leakage protection device (2) is provided with multiple first conductor posts (201) and multiple second conductor posts (202) at both ends. The multiple first conductor posts (201) are electrically connected to the signal input terminal of the first power supply circuit, and the multiple second conductor posts (202) are electrically connected to the signal output terminal of the first power supply circuit. The first conductor posts (201) and the second conductor posts (202) are respectively plugged into the conductive socket to form an electrical connection, and the first leakage protection device (2) is fixed on the body (1). The second leakage protection device (3) is provided with multiple third conductor posts (301) and multiple fourth conductor posts (304) at both ends. The multiple third conductor posts (301) are electrically connected to the signal input terminal of the second power supply circuit, and the multiple fourth conductor posts (304) are electrically connected to the signal output terminal of the second power supply circuit. The third conductor posts (301) and the fourth conductor posts (304) are respectively plugged into the conductive socket to form an electrical connection, and the second leakage protection device (3) is fixed on the body (1).

4. The circuit breaker according to claim 1, characterized in that, The first leakage protection device (2) and the second leakage protection device (3) have the same structure and are installed side by side on the main body (1).

5. The circuit breaker according to claim 1, characterized in that, The circuit breaker also includes: A data acquisition device (9) is located on the main body (1) and electrically connected to the central processing unit (8) for recording test jump related data.

6. The circuit breaker according to claim 5, characterized in that, The circuit breaker also includes: The display device (10) is located on the main body (1) and electrically connected to the central processing unit (8) for displaying the test jump related data.

7. The circuit breaker according to claim 6, characterized in that, The circuit breaker also includes: A keyboard operation device (11) is located on the main body (1) and electrically connected to the central processing unit (8) for receiving operation information.

8. The circuit breaker according to claim 7, characterized in that, The circuit breaker also includes: A fixed-value communication unit (12) is located on the main body (1) and electrically connected to the central processing unit (8) to determine the test trip current value of the first leakage protection device (2) and / or the second leakage protection device (3).

9. The circuit breaker according to claim 8, characterized in that, The circuit breaker also includes: A fixed grounding unit (13) is located on the main body (1). The fixed grounding unit (13) is electrically connected to the central processing unit (8), the first leakage protection device (2) and the second leakage protection device (3) respectively, so as to output the test trip current.

10. A control method for a circuit breaker, characterized in that, The circuit breaker is the circuit breaker according to any one of claims 1-9 above, and the control method includes: Obtain a test jump request, the test jump request including device identifier and test jump method, wherein the test jump method includes at least one of the following: no-load test jump and load test jump; Based on the device markings, determine whether to use the first leakage protection device (2) or the second leakage protection device (3) for a test trip; When it is determined that the first leakage protection device (2) is used for trial tripping, the first switch unit (4) and the second switch unit (5) are adjusted to operate according to the trial tripping method, and the third switch unit (6) and the fourth switch unit (7) are adjusted to be in the closed state so as to supply power to the electrical load through the second leakage protection device (3); Control the first leakage protection device (2) to perform a test trip; When it is determined that the second leakage protection device (3) is used for trial tripping, the third switch unit (6) and the fourth switch unit (7) are adjusted to operate according to the trial tripping method, and the first switch unit (4) and the second switch unit (5) are adjusted to be in the closed state so as to supply power to the electrical load through the first leakage protection device (2); Control the second leakage protection device (3) to perform a test trip.

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