Permanent magnet circuit breaker mechanism

Abstract

The utility model relates to the technical field of circuit breakers, and provides a permanent magnet circuit breaker mechanism, which is characterized in that a conductor is arranged at the upper part of a three-phase module pole along the horizontal direction, the output end of a first driving unit is provided with a three-station insulating pull rod, the three-station insulating pull rod is inserted into the conductor, and a three-station moving contact is arranged on the three-station insulating pull rod in a threaded manner; the three-station moving contact is located in the conductor, the three-station static contact is arranged at the front end of the upper portion of the three-phase module pole, the three-station static contact and the grounding static contact are located on the front side and the rear side of the conductor respectively, the second driving unit is arranged on the lower portion in the mechanism frame, the output end of the second driving unit is provided with a conducting strip, and the conducting strip is connected with the conductor. And the vacuum arc-extinguishing chamber is arranged at the lower part of the three-phase module pole and is positioned in front of the conducting strip. The circuit breaker mechanism has the advantages of quick response, direct driving under the action of magnetic force, good consistency of opening and closing time, simple structure, no mechanical wear, no need of frequent maintenance, and suitability for scenes with high reliability requirements.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a permanent magnet circuit breaker mechanism. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal or abnormal circuit conditions. Circuit breakers can be used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. Circuit breakers are classified into high-voltage and low-voltage circuit breakers according to their application range. The boundary between high and low voltage is somewhat blurred; generally, circuit breakers above 3kV are considered high-voltage electrical appliances. A circuit breaker typically consists of a contact system, an arc-extinguishing system, an operating mechanism, a trip unit, and a casing.

[0003] Existing circuit breakers use spring-operated mechanisms, which rely on spring tension and energy storage for closing and opening. During operation, the springs are under constant load, and over time, their stiffness decreases, affecting the closing and opening outputs, causing mechanical wear, increased maintenance costs, and slow response times.

[0004] Therefore, a permanent magnet circuit breaker mechanism is proposed to address the aforementioned problems. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a permanent magnet circuit breaker mechanism. This invention features rapid response, direct magnetic drive, good consistency in opening and closing times, a simple structure, no mechanical wear, and requires no frequent maintenance, making it suitable for scenarios with high reliability requirements.

[0006] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a permanent magnet circuit breaker mechanism, including a mechanism frame, and further including a three-phase module pole, a three-position operating component, a permanent magnet operating component, a first drive unit, and a second drive unit. The three-phase module pole is disposed at the front end of the mechanism frame. The three-position operating component includes a three-position moving contact, a three-position stationary contact, a grounding stationary contact, a conductor, and a three-position insulating pull rod. The first drive unit is disposed at the upper rear end of the mechanism frame. The conductor is disposed horizontally on the upper part of the three-phase module pole. The output end of the first drive unit is provided with a three-position insulating pull rod. The rod, a three-position insulating pull rod, is inserted into the conductor. A three-position moving contact is threaded onto the three-position insulating pull rod and is located inside the conductor. A grounding stationary contact is located at the upper front end of the mechanism frame. A three-position stationary contact is located at the upper front end of the three-phase module pole. The three-position stationary contact and the grounding stationary contact are located on the front and rear sides of the conductor, respectively. The permanent magnet operating component includes a conductive plate and a vacuum interrupter. The second drive unit is located in the lower part of the mechanism frame. A conductive plate is installed at the output end of the second drive unit and is connected to the conductor. The vacuum interrupter is located in the lower part of the three-phase module pole and is located in front of the conductive plate.

[0007] As an optimization, the first drive unit includes a motor and a sprocket and chain pair. The motor is set inside the mechanism frame, the sprocket and chain pair is set at the output end of the motor, and a three-position insulating pull rod is set at the output end of the sprocket and chain pair.

[0008] As an optimization, the three-station operation component is set in three sets, and the sprocket and chain pairs are set in two sets. The motor output end is connected to the input end of one of the sprocket and chain pairs. The two adjacent sprockets of the two sets of sprocket and chain pairs are coaxially connected, and a three-station insulating pull rod is set at the output end. A three-station insulating pull rod is set at the output end of the two sprockets of the two sets of sprocket and chain pairs that are far apart from each other.

[0009] As an optimization, the second drive unit includes a permanent magnet structure and a permanent magnet mechanism main shaft, a first permanent magnet mechanism connecting shaft and a connecting rod structure. The permanent magnet mechanism main shaft is vertically arranged at the output end of the permanent magnet unit. The first permanent magnet mechanism connecting shaft is arranged at the upper end of the permanent magnet mechanism main shaft. The connecting rod structure is arranged at the end of the first permanent magnet mechanism connecting shaft away from the permanent magnet mechanism main shaft. A conductive sheet is arranged at the front end of the connecting rod structure.

[0010] As an optimization, the linkage structure is set in three groups. Each group of linkage structures includes a second permanent magnet mechanism coupling, a permanent magnet mechanism crank arm, a permanent magnet mechanism connecting rod, and a permanent magnet mechanism insulating rod connected in sequence. The first permanent magnet mechanism coupling and the second permanent magnet mechanism coupling are connected by a permanent magnet mechanism swivel shaft. The permanent magnet mechanism insulating rod is horizontally set at the lower part of the three-phase module pole post. The front end of the permanent magnet mechanism insulating rod is connected to a conductive plate, and the rear end is connected to the middle of the permanent magnet mechanism connecting rod. The end of the permanent magnet mechanism connecting rod away from the permanent magnet mechanism crank arm is hinged in the mechanism frame.

[0011] As an optimization, the second permanent magnet mechanism of the three linkage structures is connected to each other by a quincunx shaft.

[0012] As an optimization, it also includes a magnetic shielding plate and a fixed square steel plate, which are set between the upper and lower parts of the three-phase module poles by the fixed square steel plate.

[0013] As an optimization, a first observation window and a second observation window are also included, which are respectively located at the top of the front end and the top of the rear end of the three-phase module pole.

[0014] As an optimization, the conductor is T-shaped, with its lower end connected to the conductive sheet.

[0015] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] 1. Fast response: Direct magnetic drive ensures consistent opening and closing times, typically 30%-50% faster than spring mechanisms; Bistable advantage: Even after the permanent magnet mechanism coil is de-energized, the permanent magnet mechanism spindle can still maintain the closed or open state, avoiding contact abnormalities caused by power failure.

[0017] 2. The three-position operating component switch is designed independently, using a direct-acting three-position moving contact and a three-position stationary contact. The moving and stationary contacts achieve conduction, isolation, and grounding actions. There is no moving overlap in the primary conductive part, which can effectively reduce the contact resistance of the primary circuit and avoid the increase in contact resistance caused by the misfitting accuracy of the moving and stationary contacts. It also reduces heat generation and avoids accelerated aging of insulation materials due to high temperature. There is no SF6 gas, reducing overlap points and lowering contact resistance, while avoiding the risk of gas leakage from the gas-filled cabinet.

[0018] 3. Low energy consumption and high reliability: The mechanism has a simple structure, no mechanical wear, and requires no frequent maintenance, making it suitable for scenarios with high reliability requirements; with fewer mechanical parts, the risk of phase-to-phase short circuit explosion is completely eliminated, which can more effectively protect the safe operation of switchgear and the personal safety of operators, truly achieving inherent safety and maintenance-free operation. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a diagram of the internal structure of the present invention;

[0021] Figure 2 This is an overall structural diagram of the present invention;

[0022] Figure 3This is a top view of the present invention;

[0023] Figure 4 This is the front view of the present invention.

[0024] In the diagram: 1. Mechanism frame; 2. Three-phase module pole; 3. Permanent magnet operating component; 4. Three-position operating component; 5. Fixed square steel; 6. Magnetic shielding plate; 7. Permanent magnet mechanism insulating pull rod; 8. Three-position insulating pull rod; 9. Conductor; 10. Vacuum interrupter; 11. Three-position moving contact; 12. First observation window; 13. Motor; 14. Sprocket; 15. Chain; 16. Three-position stationary contact; 17. Grounding stationary contact; 18. Permanent magnet mechanism plum blossom shaft; 19. Permanent magnet mechanism crank arm; 20. Permanent magnet mechanism main shaft; 21. Permanent magnet mechanism coil; 22. Permanent magnet mechanism iron core; 23. Permanent magnet mechanism opening magnet; 24. Conductive sheet; 25. First permanent magnet mechanism connecting shaft; 26. Permanent magnet mechanism connecting rod; 27. Second permanent magnet mechanism connecting shaft; 28. Second observation window. Detailed Implementation

[0025] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 4 As shown, a permanent magnet circuit breaker mechanism includes a frame 1, a three-phase module pole 2, a three-position operating assembly 4, a permanent magnet operating assembly 3, a first drive unit, and a second drive unit. The three-phase module pole 2 is located at the front end of the frame 1. The three-position operating assembly 4 includes a three-position moving contact 11, a three-position stationary contact 16, a grounding stationary contact 17, a conductor 9, and a three-position insulating pull rod 8. The first drive unit is located at the upper rear end of the frame 1. The conductor 9 is horizontally positioned above the three-phase module pole 2. The output end of the first drive unit is equipped with the three-position insulating pull rod 8, which is inserted into the conductor 9. The insulating pull rod 8 is threaded with a three-position moving contact 11, which is located inside the conductor 9. The grounding stationary contact 17 is located at the upper front end inside the mechanism frame 1. The three-position stationary contact 16 is located at the upper front end of the three-phase module pole 2. The three-position stationary contact 16 and the grounding stationary contact 17 are located on the front and rear sides of the conductor 9, respectively. The permanent magnet operating assembly 3 includes a conductive sheet 24 and a vacuum interrupter 10. The second drive unit is located in the lower part inside the mechanism frame 1. The output end of the second drive unit is provided with a conductive sheet 24, which is connected to the conductor 9. The vacuum interrupter 10 is located in the lower part of the three-phase module pole 2 and in front of the conductive sheet 24.

[0027] The three-phase module pole 2 and vacuum interrupter 10 of this permanent magnet circuit breaker can be integrally cast using a new type of modified epoxy resin insulation material. After molding, the surface is sprayed with nano-scale graphene material, which can withstand various harsh environments such as high humidity, high condensation, high corrosion, high dust, high altitude, and ultra-low temperature. The three-position operating component 4 is designed with independent switches, using direct-acting three-position moving contact 11 and three-position stationary contact 16. The moving and stationary contacts realize conduction, isolation, and grounding actions. There is no moving overlap in the primary conductive part, which can effectively reduce the contact resistance of the primary circuit and avoid the increase in contact resistance caused by the misalignment of the moving and stationary contacts. It also reduces heat generation and avoids accelerated aging of the insulation material due to high temperature. There is no SF6 gas, reducing the number of overlapping points and reducing contact resistance, while avoiding the risk of gas leakage from the gas-filled switchgear. With fewer mechanical parts, the risk of phase-to-phase short circuit explosion is completely eliminated, which can more effectively protect the safe operation of the switchgear and the personal safety of the operators, truly achieving inherent safety and maintenance-free operation. The three-position insulating pull rod 8 adopts a screw structure, ensuring precise and reliable operation.

[0028] In this embodiment, the first drive unit includes a motor 13 and a sprocket and chain pair. The motor 13 is installed inside the mechanism frame 1. The output end of the motor 13 is provided with a sprocket and chain pair, and the output end of the sprocket and chain pair is provided with a three-position insulating pull rod 8.

[0029] The three-station operating component 4 is configured with three sets, including two sets of sprocket and chain pairs. The output end of the motor 13 is connected to the input end of one of the sprocket and chain pairs. The two adjacent sprockets in the two sets of sprocket and chain pairs are coaxially connected, and a three-station insulating pull rod 8 is installed at the output end. A three-station insulating pull rod 8 is installed at the output ends of the two sprockets in the two sets of sprocket and chain pairs that are far apart from each other. Each sprocket and chain pair includes two sprockets 14 and one chain 15.

[0030] In this embodiment, the second drive unit includes a permanent magnet structure, a permanent magnet mechanism main shaft 20, a first permanent magnet mechanism connecting shaft 25, and a connecting rod structure. The permanent magnet mechanism main shaft 20 is vertically arranged at the output end of the permanent magnet unit. The first permanent magnet mechanism connecting shaft 25 is arranged at the upper end of the permanent magnet mechanism main shaft 20. A connecting rod structure is arranged at the end of the first permanent magnet mechanism connecting shaft 25 away from the permanent magnet mechanism main shaft 20. A conductive sheet 24 is arranged at the front end of the connecting rod structure. The permanent magnet structure includes a permanent magnet mechanism coil 21, a permanent magnet mechanism iron core 22, and a permanent magnet mechanism opening magnet 23. The permanent magnet mechanism iron core 22 is arranged on the outer side of the lower end of the permanent magnet mechanism main shaft 20. The permanent magnet mechanism coil 21 is arranged on the upper part of the outer side of the permanent magnet mechanism iron core 22, and the permanent magnet mechanism opening magnet 23 is arranged on the lower part of the permanent magnet mechanism iron core 22. The permanent magnet mechanism core 22 and permanent magnet mechanism coil 21 are designed to achieve a bistable state. The permanent magnet mechanism core 22 is a permanent magnet, and there are two permanent magnet mechanism coils 21 (closing and opening coils). The permanent magnet mechanism main shaft 20 is in a stable closed or open state when there is no current. When the closing coil of the permanent magnet mechanism coil 21 is energized, the permanent magnet mechanism main shaft 20 moves downward and maintains the closed position; when the opening coil of the permanent magnet mechanism coil 21 is energized, the permanent magnet mechanism main shaft 20 moves in the opposite direction and maintains the open state.

[0031] Operation process:

[0032] Closing: The closing coil of the permanent magnet mechanism coil 21 is turned on, generating a magnetic field that causes the main shaft 20 of the permanent magnet mechanism to move downward, closing the contacts through the linkage structure, and storing energy through the opening spring at the linkage structure.

[0033] Tripping: The tripping coil of the permanent magnet mechanism coil 21 is activated, and the contacts are quickly separated by the combination of the tripping magnetic field and the spring force of the tripping spring. The structure and connection relationship of the remaining components of the permanent magnet structure and the tripping spring are existing structures, and will not be described in detail here.

[0034] The linkage structure is set in three groups. Each group of linkage structures includes a second permanent magnet mechanism connecting shaft 27, a permanent magnet mechanism crank arm 19, a permanent magnet mechanism connecting rod 26 and a permanent magnet mechanism insulating pull rod 7 connected in sequence. The first permanent magnet mechanism connecting shaft 25 and the second permanent magnet mechanism connecting shaft 27 are connected by a permanent magnet mechanism plum blossom shaft 18. The permanent magnet mechanism insulating pull rod 7 is horizontally set at the lower part of the three-phase module pole post 2. The front end of the permanent magnet mechanism insulating pull rod 7 is connected to the conductive plate 24, and the rear end is connected to the middle of the permanent magnet mechanism connecting rod 26. The end of the permanent magnet mechanism connecting rod 26 away from the permanent magnet mechanism crank arm 19 is hinged in the mechanism frame 1.

[0035] The second permanent magnet mechanism of the three linkage structures is connected to each other via a plum blossom shaft 18 through the connecting shaft 27.

[0036] In this embodiment, a magnetic shielding plate 6 and a fixed square steel 5 are also included. The magnetic shielding plate 6 is disposed between the upper and lower parts of the three-phase module pole post 2 through the fixed square steel 5.

[0037] In this embodiment, a first observation window 12 and a second observation window 28 are also included. The first observation window 12 and the second observation window 28 are respectively located at the top of the front end and the top of the rear end of the three-phase module pole 2. By setting the first observation window 12 and the second observation window 28, the action port can be visualized.

[0038] In this embodiment, conductor 9 is T-shaped, and the lower end of conductor 9 is connected to conductive sheet 24.

[0039] Mechanism operating principle:

[0040] Three-position operating mechanism: Three-position direct-acting design: The three-position moving contact 11 moves linearly within the conductor 9 under the drive of the three-position insulating pull rod 8, realizing three positions: conduction, isolation, and grounding. The grounding and isolation positions are respectively equipped with a second observation window 28 and a first observation window 12, allowing real-time observation of the switch status. The three-position insulating pull rod 8 is powered by a motor 13 driving a sprocket 14, which in turn drives a chain 15, which in turn drives the three-position insulating pull rod 8.

[0041] The three-position insulating pull rod 8 is threadedly connected to the three-position moving contact 11. When the three-position moving contact 11 and the three-position stationary contact 16 are connected, the three positions are in the conducting position. The three-position moving contact 11 can be seen in the first observation window 12 in the conducting position.

[0042] When the three-position moving contact 11 and the grounding stationary contact 17 are connected, the three-position is in the grounding position, and the three-position moving contact 11 can be seen in the second observation window 28;

[0043] When the moving contact 11 of the three-position station is in the middle position, the three-position station is in the isolated position, and the moving contact 11 of the three-position station cannot be seen in the first observation window 12 and the second observation window 28.

[0044] Circuit breaker operating mechanism: The connection between permanent magnet mechanism 3 and permanent magnet mechanism insulating pull rod 7 is used to control the opening and closing states of vacuum interrupter 10.

[0045] When the three-position moving contact 11 is in the conducting position, the permanent magnet mechanism 3 will be in the closed state, which will drive the permanent magnet mechanism insulating rod 7 to close the vacuum interrupter 10. At this time, the three-position moving contact 11 forms a conducting state with the vacuum interrupter 10 through the conductor 9.

[0046] When the three-position moving contact 11 is in the isolation state, the vacuum interrupter 10 is closed. At this time, the circuit breaker is in the isolation state. Similarly, when the three-position moving contact 11 is in the grounding state, the circuit breaker will be in the grounding state.

[0047] This permanent magnet circuit breaker mechanism is widely used in low-voltage power distribution systems, and is especially suitable for applications requiring frequent operation or high reliability, such as industrial automation and commercial buildings. It offers the following advantages:

[0048] Fast response: Directly driven by magnetic force, with good consistency in opening and closing time, typically 30%-50% faster than spring mechanisms.

[0049] Low energy consumption and high reliability: The mechanism has a simple structure, no mechanical wear, and requires no frequent maintenance, making it suitable for scenarios with high reliability requirements.

[0050] Bistable advantage: After the permanent magnet mechanism coil 21 is de-energized, the permanent magnet mechanism main shaft 20 can still maintain the closed or open state, avoiding abnormal contact due to power failure.

[0051] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A permanent magnet circuit breaker mechanism, comprising a mechanism frame (1), characterized in that: It also includes a three-phase module pole (2), a three-station operation component (4), a permanent magnet operation component (3), a first drive unit, and a second drive unit. The three-phase module pole (2) is set at the front end of the mechanism frame (1). The three-position operating assembly (4) includes a three-position moving contact (11), a three-position stationary contact (16), a grounding stationary contact (17), a conductor (9), and a three-position insulating pull rod (8). The first drive unit is located at the upper rear end of the mechanism frame (1). The conductor (9) is located horizontally on the upper part of the three-phase module pole (2). The output end of the first drive unit is provided with the three-position insulating pull rod (8). The three-position insulating pull rod (8) is inserted into the conductor (9). The three-position moving contact (11) is threaded on the three-position insulating pull rod (8). The three-position moving contact (11) is located inside the conductor (9). The grounding stationary contact (17) is located at the upper front end of the mechanism frame (1). The three-position stationary contact (16) is located at the upper front end of the three-phase module pole (2). The three-position stationary contact (16) and the grounding stationary contact (17) are located on the front and rear sides of the conductor (9), respectively. The permanent magnet operation component (3) includes a conductive sheet (24) and a vacuum interrupter (10). The second drive unit is located in the lower part of the mechanism frame (1). The output end of the second drive unit is provided with a conductive sheet (24). The conductive sheet (24) is connected to the conductor (9). The vacuum interrupter (10) is located in the lower part of the three-phase module pole (2) and in front of the conductive sheet (24).

2. The permanent magnet circuit breaker mechanism according to claim 1, characterized in that: The first drive unit includes a motor (13) and a sprocket and chain pair. The motor (13) is set inside the mechanism frame (1). The output end of the motor (13) is equipped with a sprocket and chain pair. The output end of the sprocket and chain pair is equipped with a three-position insulating pull rod (8).

3. The permanent magnet circuit breaker mechanism according to claim 2, characterized in that: The three-station operation component (4) is set in three groups, and the sprocket chain pair is set in two groups. The output end of the motor (13) is connected to the input end of one of the sprocket chain pairs. The two adjacent sprockets of the two sprocket chain pairs are connected coaxially, and a three-station insulating pull rod (8) is set at the output end. A three-station insulating pull rod (8) is set at the output end of the two sprockets of the two sprocket chain pairs that are far apart from each other.

4. The permanent magnet circuit breaker mechanism according to claim 1 or 2, characterized in that: The second drive unit includes a permanent magnet structure, a permanent magnet mechanism main shaft (20), a first permanent magnet mechanism connecting shaft (25), and a connecting rod structure. The permanent magnet mechanism main shaft (20) is vertically arranged at the output end of the permanent magnet unit. The first permanent magnet mechanism connecting shaft (25) is arranged at the upper end of the permanent magnet mechanism main shaft (20). A connecting rod structure is arranged at the end of the first permanent magnet mechanism connecting shaft (25) away from the permanent magnet mechanism main shaft (20). A conductive sheet (24) is arranged at the front end of the connecting rod structure.

5. The permanent magnet circuit breaker mechanism according to claim 4, characterized in that: The linkage structure is set in three groups. Each group of linkage structures includes a second permanent magnet mechanism connecting shaft (27), a permanent magnet mechanism crank arm (19), a permanent magnet mechanism connecting rod (26), and a permanent magnet mechanism insulating pull rod (7) connected in sequence. The first permanent magnet mechanism connecting shaft (25) and the second permanent magnet mechanism connecting shaft (27) are connected through a permanent magnet mechanism plum blossom shaft (18). The permanent magnet mechanism insulating pull rod (7) is horizontally set at the lower part of the three-phase module pole column (2). The front end of the permanent magnet mechanism insulating pull rod (7) is connected to the conductive plate (24), and the rear end is connected to the middle of the permanent magnet mechanism connecting rod (26). The end of the permanent magnet mechanism connecting rod (26) away from the permanent magnet mechanism crank arm (19) is hinged in the mechanism frame (1).

6. The permanent magnet circuit breaker mechanism according to claim 5, characterized in that: The second permanent magnet mechanism connecting shafts (27) of the three sets of linkage structures are all connected by plum blossom shafts (18).

7. The permanent magnet circuit breaker mechanism according to claim 1 or 2, characterized in that: It also includes a magnetic shielding plate (6) and a fixed square steel (5), with the magnetic shielding plate (6) set between the upper and lower parts of the three-phase module pole (2) via the fixed square steel (5).

8. The permanent magnet circuit breaker mechanism according to claim 1 or 2, characterized in that: It also includes a first observation window (12) and a second observation window (28), which are respectively located at the top front end and the top rear end of the three-phase module pole (2).

9. The permanent magnet circuit breaker mechanism according to claim 1 or 2, characterized in that: The conductor (9) is T-shaped, and the lower end of the conductor (9) is connected to the conductive sheet (24).

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