Intelligent circuit breaker of electromagnet actuating mechanism

Abstract

The invention provides an intelligent circuit breaker of an electromagnet executing mechanism. The intelligent circuit breaker comprises a working circuit assembly and a control circuit board. The working circuit assembly and the control circuit board are installed in the base and connected through a connector, and a working circuit interface and a control circuit board interface are arranged on the side wall of one tail end of the base and connected with the working circuit assembly and the control circuit board respectively. According to the invention, the electromagnet actuating mechanism is used as a driving part of the circuit breaker and is responsible for converting a control signal into a mechanical action so as to realize opening and closing operation of the circuit breaker. Therefore, the circuit breaker has higher precision and high stability, has the characteristics of quick response and long service life, and adapts to frequent operation requirements in an electric power system. And intelligent control and protection functions are added, and the primary circuit immediately takes protection measures when an abnormality is found by monitoring the operation state of the power system in real time, so that fault expansion is avoided.

Description

Technical Field

[0001] The invention relates to an intelligent circuit breaker of an electromagnetic actuator. Background Art

[0002] The rapid development of smart grid and automation technology has put forward higher requirements for circuit breaker equipment in power systems. As a vital component of the power system, the performance of the circuit breaker directly affects the stability, reliability and safety of the power system. Traditional circuit breaker operations mostly rely on manual operation, which has problems such as inconvenient operation, low efficiency and insufficient intelligence. Therefore, it is particularly urgent to develop an intelligent circuit breaker with a high-performance electromagnetic actuator to meet the needs of modern power systems for automation, intelligence and efficiency. For example, CN118748139A discloses a liquid magnetic circuit breaker with remote opening and a remote opening method, which respectively opens and closes the circuit breaker through two electromagnets to realize the control of the opening and closing of the circuit breaker, but it does not set a protection setting during line overheating, so that it cannot protect itself. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an intelligent circuit breaker with an electromagnetic actuator.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides an intelligent circuit breaker with an electromagnetic actuator, comprising a working circuit component and a control board; the working circuit component and the control board are installed in a base and connected through a connector, and a working circuit interface and a control board interface are respectively provided on a side wall at one end of the base, which are respectively connected to the working circuit component and the control board; the working circuit component comprises a moving point component, an electromagnetic push rod, an instantaneous electromagnetic push rod, a handle, and a static contact; the moving point component moves in an arc around a rotating axis under the drive of the electromagnetic push rod, the static contact is connected to one end of the instantaneous electromagnetic push rod, and the other end of the instantaneous electromagnetic push rod is connected to the working circuit interface, the static contact and the instantaneous electromagnetic push rod are both arranged on the motion trajectory of the moving point component, the handle is connected to the moving point component through a pull rod, and the pull rod is parallel to the direction of the electromagnetic push rod.

[0006] The control board is installed at the bottom of the base, and the side of the control board adjacent to the control board interface is connected to the connector installed in the control board interface; the working circuit assembly is installed on the terminal seat, and the terminal seat is installed above the control board. Two spring plates are provided at one end of the base adjacent to the working circuit interface to connect with the working circuit assembly; the two spring plates are respectively installed in two spring plate grooves at the end of the terminal seat.

[0007] The upper end surface of the terminal seat is processed with a groove to accommodate the moving point component. The moving point component is connected to the two spring plates respectively through conductive plates, and the conductive plates are installed on the outer side wall of the terminal seat.

[0008] The moving point assembly includes a fastener and a release member, both of which are hinged on the terminal seat in sequence through a release shaft, a rotating sleeve is installed on the other end face of the fastener, the rotating sleeve is vertically hinged with the transmission rod through the rotating shaft, the lower end of the fastener is meshed with the rack, and the rack is installed in the extension direction of the electromagnetic push rod; the other end of the transmission rod is vertically intersected at the middle of the buckle plate located below the fastener, one end of the buckle plate is hinged with one end of the transmission plate, the other end of the buckle plate is processed with a lock groove, the middle of the transmission plate and the lock are hinged on the terminal seat through the lock shaft, the other end of the transmission plate is connected to the moving point frame, and a moving contact is provided at the end of the moving point frame; a lock tongue is processed at one end of the lock adjacent to the buckle plate, and the other end of the lock extends to the middle of the moving contact; the release member is U-shaped, the movement trajectory of one end adjacent to the lock forms interference with the uppermost part of the lock, and the other end is placed in front of the push rod of the electromagnetic push rod, and the electromagnetic coil of the instantaneous electromagnetic push rod is connected to the spring plate through a conductive sheet.

[0009] The middle part of the lock is a triangle, one of the corners is hinged on the lock shaft, and the other two corners are connected to the push plate and the lock tongue respectively. The side opposite to the lock shaft is provided with an upward protrusion, and a transmission column is installed on the top of the protrusion. The end of the push plate is bent toward the middle of the moving point frame, and the lock tongue is processed with a sharp corner facing the buckle plate; a torsion spring is installed on the lock shaft, one end of the torsion spring extends to the release part and is fixed to one end of the release part adjacent to the instantaneous electromagnetic push rod; a limiting column is installed on the transmission plate between the lock and the buckle plate shaft.

[0010] The moving point frame is also connected to a contact tension spring, and the other end of the contact tension spring is installed below the moving point frame and fixed on a column on the terminal seat.

[0011] The static contact and the moving contact are both placed in the opening of the arc-guiding cavity, and the other end of the arc-guiding cavity is connected to the arc-extinguishing grid.

[0012] A disconnecting hook is also provided below the moving point frame, one end of the disconnecting hook is placed between the moving point frame and the static contact and is provided with a protrusion higher than the disconnecting hook, the disconnecting hook is arranged parallel to the static contact surface and the other end is connected to one end of the bimetallic strip, the bimetallic strip is arranged along the side wall of the terminal seat, and the other end of the bimetallic strip is fixed to the side wall of the terminal seat.

[0013] The handle is connected to the rack in the moving point assembly through a pull rod, the handle is arranged outside the terminal seat, and a handle spring is installed between the pull rod and the terminal seat.

[0014] An upper cover is also installed on the base, an internal thread seat is arranged at the bottom of the base, a countersunk hole is arranged on the upper cover, and bolts pass through the countersunk hole and the terminal seat and the control electric board are connected with the internal thread seat.

[0015] The beneficial effects of the present invention are as follows: the electromagnetic actuator is used as the driving component of the circuit breaker, which is responsible for converting the control signal into mechanical action to realize the opening and closing operation of the circuit breaker. The circuit breaker has higher precision and high stability, and should also have the characteristics of fast response and long life, which adapts to the frequent operation requirements in the power system. In addition, intelligent control and protection functions are added. The primary circuit monitors the operating status of the power system in real time. When an abnormality is found, protective measures are taken immediately to avoid the expansion of the fault. Combining the electromagnetic actuator with the intelligent circuit breaker can not only realize the remote control and automatic operation of the circuit breaker, but also improve the intelligence level and operation efficiency of the power system, reduce manual intervention, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the assembly structure of the seat plate and the working circuit assembly of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the circuit breaker of the present invention when it is open;

[0019] Figure 4 It is a schematic diagram of the structure of the circuit breaker of the present invention when it is closed;

[0020] Figure 5 It is a schematic diagram of the driving structure of the moving contact of the present invention;

[0021] Figure 6 It is a schematic diagram of the appearance structure of the present invention;

[0022] In the figure: 1-electromagnetic push rod, 2-rack, 3-tripping shaft, 4-fastener, 5-transmission rod, 6-moving point frame, 61-moving point frame shaft, 62-tension spring groove, 7-transmission plate, 71-square limit column, 8-lock, 81-push plate, 82-transmission column, 83-lock tongue, 9-torsion spring, 10-tripping member, 11-static contact, 12-buckle plate, 121-shaft seat, 122-lock groove, 13-contact tension spring, 14-buckle plate shaft, 15-handle spring, 16-handle, 17-lock shaft, 18 -Limiting column, 19-bimetallic strip, 20-opening hook, 21-instantaneous electromagnetic push rod, 22-upper cover, 23-terminal seat, 24-control board, 25-conductive sheet, 26-base, 27-working circuit assembly, 28-moving contact, 29-reed slot, 30-reed connection, 31-arc extinguishing grid, 32-arc guide cavity, 33-control board interface, 34-handle limiting column, 35-internal thread seat, 36-electromagnet connector, 37-interface connection seat, 38-working circuit interface, 39-pull rod, 40-swivel sleeve. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0024] The present invention provides an intelligent circuit breaker with an electromagnetic actuator, comprising a working circuit component and a control board 24; the working circuit component and the control board 24 are installed in a base 26 and connected through a connector, and a working circuit interface 38 and a control board interface 33 are respectively provided on a side wall at one end of the base 26 and are respectively connected to the working circuit component and the control board 24; the working circuit component comprises a moving point component, an electromagnetic push rod 1, an instantaneous electromagnetic push rod 21, a handle 16, and a static contact 11, and the moving point component moves in an arc around a rotating axis under the drive of the electromagnetic push rod 1, the static contact 11 is connected to one end of the instantaneous electromagnetic push rod 21, and the other end of the instantaneous electromagnetic push rod 21 is connected to the working circuit interface 38, and the static contact 11 and the instantaneous electromagnetic push rod 21 are both arranged on the motion trajectory of the moving point component, and the handle 16 is connected to the moving point component through a pull rod, and the pull rod is parallel to the direction of the electromagnetic push rod 1.

[0025] The control board 24 is installed at the bottom of the base 26. The side of the control board 24 adjacent to the control board interface 33 is connected to the connector installed in the control board interface 33. The working circuit assembly 27 is installed on the terminal block 23. The terminal block 23 is installed above the control board 24. One end of the base 26 adjacent to the working circuit interface 38 is provided with two connecting springs 30 connected to the working circuit assembly 27. The two connecting springs 30 are respectively installed in the two spring slots 29 at the end of the terminal block 23. The control circuit is completely isolated from the working circuit by the terminal block: Figure 6The terminal block 23 is used to physically isolate the circuit breaker working circuit components and the control board 24 to avoid mutual influence between the working circuit components and the control circuit. Working circuit: refers to the circuit in the circuit breaker that supplies power to the load. Control circuit: refers to the circuit used to control the circuit breaker, provide communication, and exchange data.

[0026] The upper end surface of the terminal seat 23 is processed with a groove to accommodate the moving point assembly. The moving point assembly and the two spring plates 30 are connected respectively through conductive plates 25, and the conductive plates 25 are installed on the outer side wall of the terminal seat 23.

[0027] The moving point assembly includes a fastener 4 and a release member 10, which are hinged on the terminal seat 23 in sequence through a release shaft 3. A rotating sleeve 40 is installed on the other end surface of the fastener 4, and the rotating sleeve 40 is vertically hinged with the transmission rod 5 through the shaft. The lower end of the fastener 4 is meshed with the rack 2, and the rack 2 is installed in the extension direction of the electromagnetic push rod 1. The other end of the transmission rod 5 is vertically connected to the middle of the buckle plate 12 located below the fastener 4, one end of the buckle plate 12 is hinged to one end of the transmission plate 7, and the other end of the buckle plate 12 is processed with a lock groove 122 The middle parts of the transmission plate 7 and the lock 8 are hinged on the terminal seat 23 through the lock shaft 17, and the other end of the transmission plate 7 is connected to the moving point frame 6, and a moving contact 28 is provided at the end of the moving point frame 6; the end of the lock 8 adjacent to the buckle plate 12 is processed with a lock tongue 83, and the other end of the lock 8 extends to the middle of the moving contact 28; the release member 10 is U-shaped, and the movement trajectory of one end adjacent to the lock 8 interferes with the uppermost part of the lock 8, and the other end is placed in front of the push rod of the electromagnetic push rod 1, and the electromagnetic coil of the instantaneous electromagnetic push rod 21 is connected to the spring plate 30 through the conductive sheet 25.

[0028] The middle part of the lock buckle 8 is a triangle, one of the corners is hinged on the lock buckle shaft 17, and the other two corners are respectively connected to the push plate 81 and the lock tongue 83; the side opposite to the lock buckle shaft 17 is provided with an upward protrusion, and a transmission column 82 is installed on the top of the protrusion; the end of the push plate 81 is bent toward the middle of the moving point frame 6, and the lock tongue 83 is processed with a sharp corner facing the buckle plate 12; a torsion spring 9 is installed on the lock buckle shaft 17, one end of the torsion spring 9 extends to the release member 10, and is fixed to the release member 10 at one end adjacent to the instantaneous electromagnetic push rod 21; a limiting column 18 is installed on the transmission plate 7 between the lock buckle 8 and the buckle plate shaft 14.

[0029] The moving point frame 6 is also connected to the contact tension spring 13 , and the other end of the contact tension spring 13 is installed below the moving point frame 6 and fixed on a column on the terminal seat 23 .

[0030] The static contact 11 and the moving contact 28 are both placed in the opening of the arc guiding cavity 32 , and the other end of the arc guiding cavity 32 is connected to the arc extinguishing grid 31 .

[0031] A disconnecting hook 20 is also provided below the moving point frame 6. One end of the disconnecting hook 20 is placed between the moving point frame 6 and the static contact 11 and is provided with a protrusion higher than the disconnecting hook 20. The disconnecting hook 20 is arranged parallel to the static contact 11 and the other end is connected to one end of the bimetallic strip 19. The bimetallic strip 19 is arranged along the side wall of the terminal seat 23, and the other end of the bimetallic strip 19 is fixed to the side wall of the terminal seat 23.

[0032] The handle 16 is connected to the rack 2 in the moving point assembly through a pull rod 39 . The handle 16 is arranged outside the terminal seat 23 . A handle spring 15 is installed between the pull rod 39 and the terminal seat 23 .

[0033] The upper cover 22 is mounted on the base 26 , an internal thread seat 35 is provided at the bottom of the base 26 , a countersunk hole is provided on the upper cover 22 , and bolts pass through the countersunk hole and the terminal seat 23 and the control board 24 to connect with the internal thread seat 35 .

[0034] Example:

[0035] Remote closing: Figure 3 At this time, the circuit breaker is in the open state. When the electromagnet 1 receives the closing signal, the internal iron core pops out and drives the transmission part 2 to move toward the static contact 11. The transmission part 2 drives the middle part 4 to rotate clockwise around the axis 3. During the rotation process, the middle part 4 drives the moving point frame 6 to rotate clockwise around the axis 7 through the transmission rod 5 until the static contact 11 contacts, and the circuit breaker is closed.

[0036] During the closing process of the circuit breaker, the release member 10 rotates clockwise around the shaft 3 under the action of the lock spring 9. After the closing is completed, the release member 10 contacts the lock 8. At the same time, the other end of the release member 10 is located in front of the iron core of the electromagnet 1 to prepare for the remote opening process.

[0037] Remote opening: Figure 3 At this time, the circuit breaker is in the closed state. When the electromagnet 1 receives the opening signal, the internal iron core pops out and drives the tripping member 10 to rotate clockwise around the axis 3, thereby driving the lock buckle 8 to rotate counterclockwise around the axis 7. After the lock buckle 8 rotates to a certain angle, it separates from the buckle plate 12. After the lock buckle 8 separates from the buckle plate 12, the moving point frame 6 rotates counterclockwise around the axis 7 under the action of the contact tension spring 13, and the circuit breaker completes the opening.

[0038] During the opening process of the circuit breaker, the transmission member 2 moves outward under the action of the handle spring 15, thereby driving the middle member 4 to rotate counterclockwise around the axis 3. During the rotation process, the middle member 4 drives the buckle plate 12 to rotate clockwise around the axis 14 through the transmission rod 5. After the buckle plate 12 rotates to a certain angle and contacts the slot of the lock buckle 8, the moving buckle plate 12 is in a locked state, providing conditions for the next closing.

[0039] During the opening process of the circuit breaker, the middle piece 4 rotates counterclockwise around the shaft 3. After rotating to a certain angle, the middle piece 4 drives the release piece 10 to rotate counterclockwise around the shaft 3. After the opening process is completed, the release piece 10 is located on the side of the core of the electromagnet 1. At this time, the transmission part 2 is located in the normal front of the electromagnet 1, providing conditions for the next closing.

[0040] Manual closing: Figure 3 At this time, the circuit breaker is in the open state. Under the action of the handle 16, the circuit breaker drives the transmission part 2 to move toward the static contact 11. The transmission part 2 drives the intermediate part 4 to rotate clockwise around the axis 3. During the rotation process, the intermediate part 4 drives the moving point frame 6 to rotate clockwise around the axis 7 through the transmission rod 5 until the static contact 11 contacts, and the circuit breaker completes the closing.

[0041] Manual opening: Figure 4 At this time, the circuit breaker is in the closed state. Under the action of the handle 16, the circuit breaker drives the transmission part 2 to move in the opposite direction to the static contact 11. The transmission part 2 drives the intermediate part 4 to rotate counterclockwise around the axis 3. During the rotation process, the intermediate part 4 drives the moving point frame 6 to rotate counterclockwise around the axis 7 through the transmission rod 5. The moving point frame 6 is separated from the static contact 11, and the circuit breaker is opened.

[0042] like Figure 5 During the manual closing, manual opening and remote closing processes, the latch plate 12 and the lock 8 are in a locked state in the card slot. At this time, the lock 8, the latch plate 12, the transmission member 17 and the moving point frame 6 are driven around the equalizing shaft 7 under the action of the lock spring 9, the contact tension spring 13 and the closing and opening driving force.

[0043] like Figure 3 During the closing process, after the moving point frame 6 contacts the static contact 11, one end of the moving point frame 6 is limited and fixed by the static contact 11, and then it continues to rotate under the action of the transmission member 17 and the contact tension spring 13, driving the moving point frame 6 to rotate counterclockwise around the axis 18, ensuring that the moving point frame 6 of the circuit breaker is in reliable contact with the contact 11.

[0044] Backup mechanical protection: Figure 4 The bimetallic strip 19 is bent by heat, driving the transmission sheet 20 to move in the direction of the bimetallic strip 19. Under the action of the transmission sheet 20, the lock buckle 8 is driven to rotate counterclockwise around the shaft 7. After the lock buckle 8 rotates to a certain angle, it separates from the buckle plate 12. After the lock buckle 8 separates from the buckle plate 12, the moving point frame 6 rotates counterclockwise around the shaft 7 under the action of the contact tension spring 13, and the circuit breaker is opened. Short circuit instantaneous protection: such as Figure 4 , the instantaneous iron core 21 pops out under the action of the short-circuit current, driving the lock buckle 8 to rotate counterclockwise around the axis 7. After the lock buckle 8 rotates to a certain angle, it separates from the buckle plate 12. After the lock buckle 8 separates from the buckle plate 12, the moving point frame 6 rotates counterclockwise around the axis 7 under the action of the contact tension spring 13, and the circuit breaker completes the opening.

Claims

1. An intelligent circuit breaker with an electromagnetic actuator, comprising a working circuit component and a control circuit board (24), characterized in that: The working circuit assembly and the control board (24) are installed in the base (26) and connected through a connector. A working circuit interface (38) and a control board interface (33) are respectively provided on the side wall of one end of the base (26) and are respectively connected to the working circuit assembly and the control board (24). The working circuit assembly comprises a moving point assembly, an electromagnetic push rod (1), an instantaneous electromagnetic push rod (21), a handle (16), and a static contact (11). The moving point assembly moves in an arc around the rotation axis under the drive of the electromagnetic push rod (1). One end of the static contact (11) is connected to the instantaneous electromagnetic push rod (21), and the other end of the instantaneous electromagnetic push rod (21) is connected to the working circuit interface (38). The static contact (11) and the instantaneous electromagnetic push rod (21) are both arranged on the movement trajectory of the moving point assembly. The handle (16) is connected to the moving point assembly through a pull rod, and the pull rod is parallel to the direction of the electromagnetic push rod (1).

2. The intelligent circuit breaker of the electromagnetic actuator according to claim 1, characterized in that: The control board (24) is mounted on the bottom of the base (26); a side of the control board (24) adjacent to the control board interface (33) is connected to a connector installed in the control board interface (33); the working circuit assembly (27) is mounted on the terminal block (23); the terminal block (23) is mounted above the control board (24); one end of the base (26) adjacent to the working circuit interface (38) is provided with two connecting springs (30) connected to the working circuit assembly (27); the two connecting springs (30) are respectively mounted in two spring slots (29) at the end of the terminal block (23).

3. The intelligent circuit breaker of the electromagnetic actuator as claimed in claim 2, characterized in that: The upper end surface of the terminal seat (23) is processed with a groove to accommodate the moving point assembly, and the moving point assembly and the two connecting spring sheets (30) are respectively connected through conductive sheets (25), and the conductive sheets (25) are installed on the outer side wall of the terminal seat (23).

4. The intelligent circuit breaker with electromagnetic actuator as claimed in claim 3, characterized in that: The moving point assembly comprises a fastener (4) and a release member (10), the fastener (4) and the release member (10) are hingedly connected to the terminal seat (23) in sequence through a release shaft (3), a rotating sleeve (40) is installed on the other end surface of the fastener (4), the rotating sleeve (40) is vertically hinged to the transmission rod (5) through the shaft, the lower end of the fastener (4) is meshed with the rack (2), and the rack (2) is installed in the extension direction of the electromagnetic push rod (1); the other end of the transmission rod (5) is vertically connected to the middle part of the buckle plate (12) located below the fastener (4), one end of the buckle plate (12) is hingedly connected to one end of the transmission plate (7), and the other end of the buckle plate (12) is processed with a locking groove (12 2), the middle parts of the transmission plate (7) and the lock (8) are hinged on the terminal seat (23) through the lock shaft (17), the other end of the transmission plate (7) is connected to the moving point frame (6), and the end of the moving point frame (6) is provided with a moving contact (28); the end of the lock (8) adjacent to the buckle plate (12) is processed with a lock tongue (83), and the other end of the lock (8) extends to the middle of the moving contact (28); the release member (10) is U-shaped, and the movement trajectory of one end adjacent to the lock (8) forms interference with the uppermost part of the lock (8), and the other end is placed in front of the electromagnetic push rod (1), and the electromagnetic coil of the instantaneous electromagnetic push rod (21) is connected to the spring plate (30) through the conductive sheet (25).

5. The intelligent circuit breaker of the electromagnetic actuator as claimed in claim 4, characterized in that: The middle part of the lock (8) is triangular, one of the corners is hinged on the lock shaft (17), and the other two corners are respectively connected to the push plate (81) and the lock tongue (83); the side opposite to the lock shaft (17) is provided with an upward protrusion, and the top of the protrusion is installed with a transmission column (82); the end of the push plate (81) is bent toward the middle of the moving point frame (6), and the lock tongue (83) is processed with a sharp corner facing the buckle plate (12); a torsion spring (9) is installed on the lock shaft (17), one end of the torsion spring (9) extends to the release member (10) and is fixed to one end of the release member (10) adjacent to the instantaneous electromagnetic push rod (21); a limiting column (18) is installed on the transmission plate (7) between the lock (8) and the buckle plate shaft (14).

6. The intelligent circuit breaker with electromagnetic actuator as claimed in claim 5, characterized in that: The moving point frame (6) is also connected to a contact tension spring (13), and the other end of the contact tension spring (13) is installed below the moving point frame (6) and fixed on a column on the terminal seat (23).

7. The intelligent circuit breaker with electromagnetic actuator according to claim 1, characterized in that: The static contact (11) and the moving contact (28) are both placed in the opening of the arc guide cavity (32), and the other end of the arc guide cavity (32) is connected to the arc extinguishing grid (31).

8. The intelligent circuit breaker with electromagnetic actuator according to claim 1, characterized in that: A disconnecting hook (20) is also provided below the moving point frame (6); one end of the disconnecting hook (20) is placed between the moving point frame (6) and the stationary contact (11) and is provided with a protrusion higher than the disconnecting hook (20); the disconnecting hook (20) is arranged parallel to the stationary contact (11) and the other end is connected to one end of a bimetallic strip (19); the bimetallic strip (19) is arranged along the side wall of the terminal seat (23); and the other end of the bimetallic strip (19) is fixed to the side wall of the terminal seat (23).

9. The intelligent circuit breaker with electromagnetic actuator according to claim 1, characterized in that: The handle (16) is connected to the rack (2) in the moving point assembly via a pull rod (39); the handle (16) is arranged outside the terminal seat (23); and a handle spring (15) is installed between the pull rod (39) and the terminal seat (23).

10. The intelligent circuit breaker with electromagnetic actuator according to claim 1, characterized in that: An upper cover (22) is also mounted on the base (26), an internal thread seat (35) is provided at the bottom of the base (26), a countersunk hole is provided on the upper cover (22), and bolts pass through the countersunk hole and the terminal seat (23) and the control board (24) to connect with the internal thread seat (35).

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