A pluggable miniature circuit breaker

Abstract

The present invention provides a plug-in miniature circuit breaker, including a module head and a base; the module head includes a handle, a disconnecting connecting rod mechanism, an electromagnetic release, a moving contact, a static contact, an arc extinguishing grid, an arc-starting plate and a bimetallic strip; the base includes an inlet terminal and an outlet terminal; the module head is also provided with at least one first connecting piece and at least one second connecting piece; the base is provided with at least one third connecting piece and at least one fourth connecting piece; it also includes a first driving member, a second driving member, a fifth connecting piece, a detection mechanism, a first circuit board, and a driving mechanism; the detection mechanism and the driving mechanism are respectively connected to the first circuit board for communication. The technical solution provided by the present invention can improve the protection accuracy of the miniature circuit breaker and realize intelligent control, and can also realize unified monitoring, management, control and monitoring of the opening and closing states of a plurality of miniature circuit breakers, and improve the safety of power distribution; at the same time, it can realize the rapid plugging and unplugging of the miniature circuit breaker, improve work efficiency, and improve the continuity of power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a plug-in miniature circuit breaker. Background Art

[0002] Miniature circuit breakers refer to low-voltage circuit breakers used on AC 50 / 60Hz lines with rated voltages of 230 / 400V and rated currents below 63A. They are commonly used in industrial, commercial, high-rise and residential places. In the prior art, miniature circuit breakers usually use electromagnetic releases to achieve short-circuit or overload protection, and bimetallic strips to achieve overheating protection. However, due to differences in their physical properties, electromagnetic releases and bimetallic strips also have high discreteness, time delays and poor protection accuracy, which makes the protection of the power distribution system by miniature circuit breakers still have safety hazards and incomplete protection. At the same time, the opening and closing states of traditional miniature circuit breakers are also unknown, and there is a lack of unified monitoring, management and control of each miniature circuit breaker, which requires manual on-site inspection and control, which is time-consuming and labor-intensive. In addition, conventional miniature circuit breakers are usually installed in a standard rail installation method, where the bottom of the miniature circuit breaker is clamped on the rail, and then the incoming and outgoing lines are connected by connecting screws or the like; however, when the miniature circuit breaker fails and needs to be repaired or replaced, it needs to be completely dismantled, which makes maintenance and replacement inconvenient, reduces work efficiency, and affects the continuity of power supply. In view of the above problems, the present invention discloses a pluggable miniature circuit breaker to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a pluggable miniature circuit breaker. On the one hand, it can solve the problems of time delay and poor protection accuracy, potential safety hazards and incomplete protection of miniature circuit breakers in the prior art, improve protection accuracy and realize intelligent control, and at the same time, it can monitor the opening and closing status of the miniature circuit breaker in real time, and realize unified monitoring, management and control of several miniature circuit breakers; on the other hand, it can realize quick plugging and unplugging, facilitate maintenance or replacement, improve work efficiency, and enhance power supply continuity.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a pluggable miniature circuit breaker, including a module head and a base; the module head includes a handle, a disconnecting connecting rod mechanism, an electromagnetic release, a moving contact, a static contact, an arc extinguishing grid, an arc striking plate and a bimetallic strip; the static contact is electrically connected to the electromagnetic release; the bimetallic strip is electrically connected to the moving contact; the base includes at least one incoming terminal and at least one outgoing terminal; the module head is also provided with at least one first connecting piece and at least one second connecting piece; the base is provided with at least one third connecting piece and at least one fourth connecting piece; the first connecting piece is electrically connected to the third connecting piece; the second connecting piece is electrically connected to the The fourth connecting piece is electrically connected; it also includes a first driving member, a second driving member, and a fifth connecting piece; the bimetallic strip is drivingly connected to the first driving member; the second driving member is drivingly connected to the first driving member; the first driving member is drivingly connected to the disconnecting connecting rod mechanism; the first connecting piece is electrically connected to the bimetallic strip through the fifth connecting piece; the second connecting piece is electrically connected to the electromagnetic release; it also includes a detection mechanism, a first circuit board, and a driving mechanism; the first circuit board is provided with a first microprocessor and a short-circuiter, the detection mechanism and the driving mechanism are respectively communicated with the first circuit board, and the driving mechanism is drivingly connected to the second driving member.

[0005] Optionally, the detection mechanism is at least one of a current transformer, a voltage transformer, and a temperature sensor; the driving mechanism is at least one of an electromagnetic coil, an electric push rod, a hydraulic rod, and a pneumatic rod. Thus, the first microprocessor of the first circuit board analyzes and processes the current and voltage signals in the plug-in miniature circuit breaker circuit collected by the detection mechanism in real time, and the temperature signal of the plug-in miniature circuit breaker, and then outputs a disconnection or closing signal to the driving mechanism, so that the second driving member and the first driving member are controlled by the driving mechanism to drive the disconnection connecting rod mechanism to move, drive the opening and closing of the moving contact and the static contact, and realize the intelligent and fast opening and closing of the plug-in miniature circuit breaker on the basis of retaining the traditional overload and overheat protection of the circuit breaker, thereby improving the comprehensiveness and accuracy of the protection of the plug-in miniature circuit breaker and improving the safety of the power distribution system.

[0006] Optionally, the detection mechanism is arranged on the module head or the base; the driving mechanism is arranged on the module head or the base; and the first circuit board is arranged on the module head or the base.

[0007] Furthermore, the first driving member includes a first connecting portion and a driving portion, the first connecting portion is drivingly connected to the bimetal strip, and the driving portion is drivingly connected to the disconnecting linkage mechanism.

[0008] Furthermore, the second driving member includes a triggering portion, a rotating shaft portion, and a second connecting portion, the triggering portion is drivingly connected to the driving mechanism, and the second connecting portion is drivingly connected to the first connecting portion.

[0009] Furthermore, it also includes a micro switch and a third driving component, and the micro switch is communicatively connected to the first circuit board.

[0010] Furthermore, the third driving member includes a third connecting portion and a fourth connecting portion, the third connecting portion is drivingly connected to the handle, and the fourth connecting portion is drivingly connected to the micro switch. Thus, when the miniature circuit breaker is opened or closed, the micro switch can be driven in real time by the third driving member, and the signal is transmitted to the first circuit board through the micro switch, thereby monitoring the opening and closing state of the miniature circuit breaker in real time, and the opening and closing state of each miniature circuit breaker can be grasped in real time, which is convenient for the monitoring and management of the management personnel.

[0011] Furthermore, the module head also includes at least one first connecting piece and at least one second connecting piece, the first connecting piece and the third connecting piece are connected through the first connecting piece; the second connecting piece and the fourth connecting piece are connected through the second connecting piece; thereby, the module head and the base can be quickly connected, which facilitates the maintenance or replacement of various parts, improves work efficiency, and enhances the continuity of power supply.

[0012] Furthermore, the base also includes at least one third connecting piece and at least one fourth connecting piece, the third connecting piece is connected to the incoming line terminal via the third connecting piece; the fourth connecting piece is connected to the outgoing line terminal via the fourth connecting piece.

[0013] Optionally, the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member may be a plug, a socket, a screw, or a wire pressing frame.

[0014] Furthermore, the module head has a first clamping portion, and the base has a second clamping portion, and the first clamping portion is clamped with the second clamping portion, thereby enabling quick plugging and unplugging of the module head and the base, facilitating maintenance or replacement of various parts, improving work efficiency, and enhancing power supply continuity.

[0015] Furthermore, it also includes a second circuit board, which is communicatively connected to the short-circuiter, and is provided with a second processor, a power supply, and a communication port; the communication port can be communicatively connected to an external device; the power supply is used to supply power to at least one of the first circuit board, the second circuit board, the detection mechanism, and the driving mechanism; thereby, the second circuit board can be connected to a plurality of miniature circuit breakers through each short-circuiter, and at the same time, through the second circuit board, the second processor can also analyze and process in real time the current and voltage signals in each plug-in miniature circuit breaker line collected by the detection mechanism and the plug-in miniature circuit breaker through the second circuit board. The temperature signal of the circuit breaker is then directly output or the first circuit board outputs a disconnection or closing signal to the driving mechanism of each miniature circuit breaker, so that the second driving member and the first driving member are controlled by the driving mechanism to drive the disconnection connecting rod mechanism to drive the opening and closing of the moving contact and the static contact. On the basis of retaining the traditional overload and overheating protection of the circuit breaker, the intelligent and fast opening and closing of the plug-in miniature circuit breaker is realized, the protection comprehensiveness and protection accuracy of the plug-in miniature circuit breaker are improved, and the safety of the power distribution system is improved, thereby realizing unified monitoring, management and control of several miniature circuit breakers, improving work efficiency, and realizing remote control.

[0016] Optionally, the first connecting piece, the second connecting piece, the third connecting piece, the fourth connecting piece, and the fifth connecting piece are U-shaped or L-shaped or any combination of the two.

[0017] The pluggable miniature circuit breaker provided by the present invention has the following beneficial effects: on the one hand, it can solve the problems of time delay and poor protection accuracy, potential safety hazards and incomplete protection existing in miniature circuit breakers in the prior art, improve the protection accuracy of the pluggable miniature circuit breaker and realize intelligent control of the pluggable miniature circuit breaker, and can also realize unified monitoring, management and control of several miniature circuit breakers, and at the same time, it can monitor the opening and closing status of the miniature circuit breaker in real time, which is convenient for management personnel to monitor and manage, improve work efficiency, and improve the safety of the power distribution system; on the other hand, by designing the module head and base structure, the module head and the base can be quickly plugged in and out, which is convenient for maintenance or replacement of various parts, solves the problem of inconvenient maintenance or replacement of miniature circuit breakers in the prior art, significantly improves the work efficiency of the staff, and improves the continuity of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1This is a schematic structural diagram of a pluggable miniature circuit breaker provided in Embodiment 1 of the present invention.

[0020] Description of Figure Numbers:

[0021] 1. Module head; 101. First clamping part; 2. Base; 201. Second clamping part; 3. Handle; 4. Disconnection connecting rod mechanism; 5. Electromagnetic release; 6. Moving contact; 7. Static contact; 8. Arc extinguishing grid; 9. Arc striking plate; 10. Bimetallic strip; 11. Third driving member; 1101. Third connecting part; 1102. Fourth connecting part; 12. First driving member; 1201. First connecting part; 1202. Driving part; 13. First connecting member; 14. First connecting sheet; 1 5. Third connecting piece; 16. Third connecting member; 17. Incoming terminal; 18. Second driving member; 1801. Actuating portion; 1802. Rotating shaft portion; 1803. Second connecting portion; 19. Driving mechanism; 20. Fifth connecting piece; 21. Short circuit; 22. First circuit board; 23. Outgoing terminal; 24. Detection mechanism; 25. Fourth connecting member; 26. Micro switch; 27. Fourth connecting piece; 28. Second connecting piece; 29. ​​Second connecting member; 30. First microprocessor. DETAILED DESCRIPTION

[0022] The pluggable miniature circuit breaker of the present invention is described in detail below with reference to the accompanying drawings.

[0023] Embodiment 1

[0024] Figure 1 FIG. 2 shows a schematic diagram of the structure of the pluggable miniature circuit breaker of the first embodiment. Figure 1As shown, a pluggable miniature circuit breaker of a preferred specific embodiment of the present invention includes a module head 1 and a base 2; the module head 1 includes a handle 3, a disconnecting connecting rod mechanism 4, an electromagnetic release 5, a moving contact 6, a static contact 7, an arc extinguishing grid 8, an arc striking plate 9 and a bimetallic strip 10; the static contact 7 is electrically connected to the electromagnetic release 5; the bimetallic strip 10 is electrically connected to the moving contact 6; the base 2 includes at least one incoming terminal 17 and at least one outgoing terminal 23; the module head 1 is also provided with at least one first connecting piece 14 and at least one second connecting piece 28; the base 2 is provided with at least one third connecting piece 15 and at least one fourth connecting piece 27; the first connecting piece 14 is electrically connected to the third connecting piece 15; the second connecting piece 28 is electrically connected to the fourth connecting piece 2 7 is electrically connected; it also includes a first driving member 12, a second driving member 18, and a fifth connecting piece 20; the bimetallic strip 10 is drivingly connected to the first driving member 12; the second driving member 18 is drivingly connected to the first driving member 12; the first driving member 12 is drivingly connected to the disconnecting connecting rod mechanism 4; the first connecting piece 14 is electrically connected to the bimetallic strip 10 through the fifth connecting piece 20; the second connecting piece 28 is electrically connected to the electromagnetic release 5; it also includes a detection mechanism 24, a first circuit board 22, and a driving mechanism 19; the first circuit board 22 is provided with a first microprocessor 30 and a short circuit 21, the detection mechanism 24 and the driving mechanism 19 are respectively connected to the first circuit board 22 for communication, and the driving mechanism 19 is drivingly connected to the second driving member 18.

[0025] Optionally, the detection mechanism 24 is at least one of a current transformer, a voltage transformer, and a temperature sensor; the driving mechanism 19 is at least one of an electromagnetic coil, an electric push rod, a hydraulic rod, and a pneumatic rod. Thus, the first microprocessor of the first circuit board analyzes and processes the current and voltage signals in the plug-in miniature circuit breaker circuit collected by the detection mechanism in real time, and the temperature signal of the plug-in miniature circuit breaker, and then outputs a disconnection or closing signal to the driving mechanism, so that the second driving member and the first driving member are controlled by the driving mechanism to drive the disconnection connecting rod mechanism to move, drive the opening and closing of the moving contact and the static contact, and realize the intelligent and fast opening and closing of the plug-in miniature circuit breaker on the basis of retaining the traditional overload and overheat protection of the circuit breaker, improve the comprehensiveness and accuracy of the protection of the plug-in miniature circuit breaker, and improve the safety of the power distribution system. For example, the first microprocessor in the first circuit board can determine the power distribution abnormality such as short-circuit current, overload current, leakage current, three-phase unbalanced current, etc. according to the current signal by comparing it with the rated value such as the rated current, so as to control the second drive member and the first drive member in real time by controlling the driving mechanism to drive the action of the disconnecting connecting rod mechanism, drive the opening of the moving contact and the static contact, and quickly and accurately cut off the power distribution line, so as to realize the precise protection of power distribution abnormalities such as short-circuit protection, overload protection, leakage protection, three-phase unbalanced current, etc., improve the comprehensiveness and protection accuracy of the power distribution protection of the plug-in miniature circuit breaker, and realize intelligent control.

[0026] Optionally, the detection mechanism 24 is disposed on the module head 1 or the base 2 ; the driving mechanism 19 is disposed on the module head 1 or the base 2 ; and the first circuit board 22 is disposed on the module head 1 or the base 2 .

[0027] Optionally, the first microprocessor and the second microprocessor may be MC68HC908AP32 chips, and the first circuit board and the second circuit board may be PCB boards.

[0028] Furthermore, the first driving member 12 includes a first connecting portion 1201 and a driving portion 1202 , the first connecting portion 1201 is drivingly connected to the bimetallic strip 10 , and the driving portion 1202 is drivingly connected to the disconnecting linkage mechanism 4 .

[0029] Furthermore, the second driving member 18 includes a triggering portion 1801 , a rotating shaft portion 1802 and a second connecting portion 1803 , the triggering portion 1801 is drivingly connected to the driving mechanism 19 , and the second connecting portion 1803 is drivingly connected to the first connecting portion 1201 .

[0030] Furthermore, it also includes a micro switch 26 and a third driving member 11 , and the micro switch 26 is communicatively connected with the first circuit board 22 .

[0031] Furthermore, the third driving member 11 includes a third connecting portion 1101 and a fourth connecting portion 1102, wherein the third connecting portion 1101 is drivingly connected to the handle 3, and the fourth connecting portion 1102 is drivingly connected to the micro switch 26. Thus, when the miniature circuit breaker is opened or closed, the micro switch can be driven in real time by the third driving member, and the signal is transmitted to the first circuit board through the micro switch, thereby monitoring the opening and closing state of the miniature circuit breaker in real time, and mastering the opening and closing state of each miniature circuit breaker in real time, which is convenient for monitoring and management by management personnel.

[0032] Furthermore, the module head 1 also includes at least one first connecting member 13 and at least one second connecting member 29, the first connecting piece 14 and the third connecting piece 15 are connected through the first connecting piece 13; the second connecting piece 28 and the fourth connecting piece 27 are connected through the second connecting piece 29; thereby, the module head and the base can be quickly connected, which facilitates the maintenance or replacement of various parts, improves work efficiency, and enhances the continuity of power supply.

[0033] Furthermore, the base 2 also includes at least one third connecting piece 16 and at least one fourth connecting piece 25 , the third connecting piece 15 is connected to the incoming terminal 17 via the third connecting piece 16 ; the fourth connecting piece 27 is connected to the outgoing terminal 23 via the fourth connecting piece 25 .

[0034] Optionally, the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member may be a plug, a socket, a screw, or a wire pressing frame.

[0035] Furthermore, the module head 1 has a first clamping portion 101, and the base 2 has a second clamping portion 201. The first clamping portion 101 and the second clamping portion 201 are clamped together, thereby enabling quick plugging and unplugging of the module head and the base, facilitating maintenance or replacement of various parts, improving work efficiency, and enhancing power supply continuity.

[0036] Furthermore, it also includes a second circuit board, which is communicatively connected to the short-circuit 21. The second circuit board is provided with a second processor, a power supply, and a communication port. Since it is easy to understand, they are not drawn in the drawings. The second circuit board can be provided on the module head or the base or outside; the communication port can be communicatively connected to an external device; the power supply is used to supply power to at least one of the first circuit board, the second circuit board, the detection mechanism, and the driving mechanism; thereby, the second circuit board can be connected to a plurality of miniature circuit breakers through each short-circuit, and at the same time, the second processor can also analyze and process the information transmitted by the first circuit board in real time through the second circuit board. The detection mechanism of the input collects the current and voltage signals in each plug-in miniature circuit breaker circuit and the temperature signal of the plug-in miniature circuit breaker, and then directly outputs or outputs the breaking or closing signal to the driving mechanism of each miniature circuit breaker through the first circuit board, so that the second driving member and the first driving member are controlled by the driving mechanism to drive the breaking connecting rod mechanism to move, drive the opening and closing of the moving contact and the static contact, and realize the intelligent and fast opening and closing of the plug-in miniature circuit breaker on the basis of retaining the traditional overload and overheating protection of the circuit breaker, thereby improving the comprehensiveness and accuracy of protection of the plug-in miniature circuit breaker and improving the safety of the power distribution system. For example, the second microprocessor in the second circuit board can determine the power distribution abnormality such as short-circuit current, overload current, leakage current, three-phase unbalanced current, etc. according to the current signal by comparing it with the rated value such as the rated current, so as to directly control in real time or control the driving mechanism of each miniature circuit breaker through the first circuit board to control the second driving member and the first driving member to drive the disconnecting connecting rod mechanism to drive the opening of the moving contact and the static contact, and quickly and accurately cut off the power distribution line, so as to realize the precise protection of power distribution abnormality such as short-circuit protection, overload protection, leakage protection, three-phase unbalanced current, etc., improve the comprehensiveness and protection accuracy of the power distribution protection of the plug-in miniature circuit breaker, and realize intelligent control. In this way, unified monitoring, management and control of several miniature circuit breakers can be realized, work efficiency can be improved, and remote control can also be realized.

[0037] Optionally, the first connecting piece 14 , the second connecting piece 28 , the third connecting piece 15 , the fourth connecting piece 27 , and the fifth connecting piece 20 are U-shaped or L-shaped or any combination of the two.

[0038] The pluggable miniature circuit breaker provided by the present invention can, on the one hand, solve the problems of time delay and poor protection accuracy, potential safety hazards and incomplete protection existing in the miniature circuit breakers in the prior art, improve the protection accuracy of the pluggable miniature circuit breaker and realize the intelligent control of the pluggable miniature circuit breaker, and can also realize the unified monitoring, management and control of a number of miniature circuit breakers, and at the same time can monitor the opening and closing states of the miniature circuit breakers in real time, which is convenient for management personnel to monitor and manage, improve work efficiency, and improve the safety of the power distribution system; on the other hand, by designing the module head and base structure, the module head and the base can be quickly plugged in and out, which is convenient for maintenance or replacement of various parts, solves the problem of inconvenient maintenance or replacement of miniature circuit breakers in the prior art, significantly improves the work efficiency of the staff, and improves the continuity of power supply.

[0039] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pluggable miniature circuit breaker, comprising a module head (1) and a base (2); the module head (1) comprises a handle (3), a disconnecting connecting rod mechanism (4), an electromagnetic release (5), a moving contact (6), a stationary contact (7), an arc extinguishing grid (8), an arc striking plate (9) and a bimetallic strip (10); the stationary contact (7) is electrically connected to the electromagnetic release (5); the bimetallic strip (10) is electrically connected to the moving contact (6); the base (2) comprises at least one incoming terminal (17) and at least one outgoing terminal (23); characterized in that, The module head (1) is also provided with at least one first connecting piece (14) and at least one second connecting piece (28); the base (2) is provided with at least one third connecting piece (15) and at least one fourth connecting piece (27); the first connecting piece (14) is electrically connected to the third connecting piece (15); the second connecting piece (28) is electrically connected to the fourth connecting piece (27); the circuit breaker also includes a first driving member (12), a second driving member (18), and a fifth connecting piece (20); the bimetallic strip (10) is drivingly connected to the first driving member (12); the second driving member (18) is drivingly connected to the first driving member (12); the The first driving member (12) is drivingly connected to the disconnecting connecting rod mechanism (4); the first connecting piece (14) is electrically connected to the bimetallic strip (10) through the fifth connecting piece (20); the second connecting piece (28) is electrically connected to the electromagnetic release (5); the circuit breaker further comprises a detection mechanism (24), a first circuit board (22), and a driving mechanism (19); a first microprocessor (30) and a short circuit (21) are arranged on the first circuit board (22); the detection mechanism (24) and the driving mechanism (19) are respectively connected to the first circuit board (22) in communication; and the driving mechanism (19) is drivingly connected to the second driving member (18); The first driving member (12) comprises a first connecting portion (1201) and a driving portion (1202), the first connecting portion (1201) being drivingly connected to the bimetallic strip (10), and the driving portion (1202) being drivingly connected to the disconnecting connecting rod mechanism (4); The circuit breaker further comprises a micro switch (26) and a third driving member (11), wherein the micro switch (26) is communicatively connected with the first circuit board (22); The third driving member (11) comprises a third connecting portion (1101) and a fourth connecting portion (1102); the third connecting portion (1101) is drivingly connected to the handle (3), and the fourth connecting portion (1102) is drivingly connected to the micro switch (26).

2. The pluggable miniature circuit breaker according to claim 1, characterized in that: The detection mechanism (24) is arranged on the module head (1) or the base (2); the drive mechanism (19) is arranged on the module head (1) or the base (2); the first circuit board (22) is arranged on the module head (1) or the base (2); the detection mechanism (24) is at least one of a current transformer, a voltage transformer, and a temperature sensor; and the drive mechanism (19) is at least one of an electromagnetic coil, an electric push rod, a hydraulic rod, and a pneumatic rod.

3. The pluggable miniature circuit breaker according to claim 1, characterized in that: The second driving member (18) comprises a triggering portion (1801), a rotating shaft portion (1802) and a second connecting portion (1803); the triggering portion (1801) is drivingly connected to the driving mechanism (19), and the second connecting portion (1803) is drivingly connected to the first connecting portion (1201).

4. The pluggable miniature circuit breaker according to claim 1, characterized in that: The module head (1) further comprises at least one first connecting piece (13) and at least one second connecting piece (29), wherein the first connecting piece (14) is connected to the third connecting piece (15) via the first connecting piece (13); and the second connecting piece (28) is connected to the fourth connecting piece (27) via the second connecting piece (29).

5. The pluggable miniature circuit breaker according to claim 1, characterized in that: The base (2) further comprises at least one third connecting piece (16) and at least one fourth connecting piece (25), wherein the third connecting piece (15) is connected to the incoming line terminal (17) via the third connecting piece (16); and the fourth connecting piece (27) is connected to the outgoing line terminal (23) via the fourth connecting piece (25).

6. The pluggable miniature circuit breaker according to claim 1, characterized in that: The module head (1) has a first clamping portion (101), and the base (2) has a second clamping portion (201), and the first clamping portion (101) is clamped with the second clamping portion (201).

7. The pluggable miniature circuit breaker according to claim 1, characterized in that: The circuit breaker further comprises a second circuit board, which is communicatively connected to the short circuiter (21), and is provided with a second processor, a power supply and a communication port.

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