Intelligent circuit breaker with multiple protection and high-precision detection

Abstract

The invention discloses an intelligent circuit breaker with multiple protection and high-precision detection, and the key points of the technical scheme are that the intelligent circuit breaker comprises a housing, the interior of the housing is fixedly connected with an arc chute, and the interior of the housing is fixedly connected with a first wire connector; the power supply wire is fixedly connected to the bottom surface of the first wire connector; the second wire connector is fixedly connected to the interior of the shell, a current and voltage sensor and an infrared temperature sensor are used in cooperation, the current, voltage and temperature during power transmission of the power transmission wire can be monitored, if the power transmission wire is in an abnormal condition, a movable contact piece can be rapidly separated from a static contact, and the power transmission wire is prevented from being damaged. And meanwhile, by continuously monitoring the current, the voltage and the temperature of the power transmission lines during power transmission, transient fluctuation or continuous overload during power transmission of the power transmission lines can be judged for power failure and power transmission, so that the influence on the operation stability of key equipment due to the transient fluctuation is avoided.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to an intelligent circuit breaker with multiple protections and high-precision detection. Background Technology

[0002] A circuit breaker is an important electrical switching device used for overload, short circuit, and leakage protection of circuits, playing a crucial role in safety protection in modern power systems. It automatically disconnects the circuit when the current exceeds a set value or a fault occurs, thus preventing equipment damage and fire accidents. Based on different working principles and application scenarios, circuit breakers are mainly divided into air circuit breakers, molded case circuit breakers, miniature circuit breakers, and intelligent circuit breakers. Among them, intelligent circuit breakers integrate multi-functional modules such as detection, control, and communication, enabling real-time monitoring and management of multiple parameters such as current, voltage, and temperature. In power distribution systems, industrial automation, building power supply, and new energy equipment, intelligent circuit breakers not only perform traditional power outage protection functions but can also be linked with host computer systems or IoT platforms to achieve remote monitoring, load analysis, and fault early warning, thereby improving the safety and operational efficiency of the entire electrical system. With the increasing automation of industrial equipment, the frequency of transient fluctuations, electromagnetic interference, and complex load changes in circuits has increased significantly, placing higher demands on the detection sensitivity, response speed, and malfunction protection capabilities of circuit breakers.

[0003] For example, Chinese patent CN222965965U discloses a circuit breaker component comprising a base and a cover. The cover and base are interlocked to form an installation chamber. The top of the cover has several heat dissipation holes, and the bottom of the cover has a connecting plate. One end of the connecting plate is attached to the end face of the base. The connecting plate has several flow guiding structures. Both the heat dissipation holes and the flow guiding structures are connected to the installation chamber, allowing the installation chamber to communicate with the external space through these structures. This design enables gas convection without affecting the overall volume of the circuit breaker, improving heat dissipation efficiency and reducing the temperature rise of the circuit breaker.

[0004] However, in practical applications, this solution relies on a magnetic field for electromagnetic tripping, which cannot accurately distinguish between transient fluctuations and continuous overloads, leading to malfunctions or delayed actions. This can easily cause interruptions in normal power supply, affecting the continuity of the production line or the operational stability of critical equipment. To address these issues, we propose an intelligent circuit breaker with multiple protections and high-precision detection. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent circuit breaker with multiple protections and high-precision detection, solving the problem that electromagnetic tripping cannot accurately distinguish between transient fluctuations and continuous overloads, leading to malfunctions or delayed actions, which can easily cause interruptions in normal power supply and affect the continuity of production lines or the operational stability of critical equipment.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A smart circuit breaker with multiple protections and high-precision detection includes:

[0008] The housing has an arc-extinguishing grid fixedly connected inside, and a first connector fixedly connected inside.

[0009] A power supply line is fixedly connected to the bottom surface of the first connector, and a stationary contact is fixedly connected to the bottom surface of the power supply line.

[0010] The second connector is fixedly connected inside the housing. An elastic sheet is fixedly connected to the top surface of the second connector. A rotating rod is provided inside the housing. A movable contact piece is fixedly connected to the outer wall of the rotating rod. The movable contact piece is in contact with the elastic sheet. A protective sheet is fixedly connected to the outer wall of the rotating rod.

[0011] A detection component located inside the housing is used to detect the current of the power transmission line. The detection component includes a mounting block, which is fixedly connected to the inside of the housing. A current and voltage sensor is fixedly connected to one side of the mounting block, and a placement groove is opened on one side of the mounting block. An infrared temperature sensor is fixedly connected inside the placement groove.

[0012] A positioning component located inside the outer casing is used to position the rotating rod.

[0013] Preferably, the positioning component includes:

[0014] A sliding block is slidably installed inside the outer shell. A rotating groove is provided on one side of the sliding block. A positioning rod is fixedly connected to one end of the rotating rod. The positioning rod is rotatably installed together with the rotating groove. A positioning ring is fixedly connected to the outer wall of the positioning rod. A positioning groove is provided on the inner wall of the rotating groove. The positioning ring is movably fitted together with the positioning groove.

[0015] Preferably, a control plate is fixedly connected to one side of the sliding block, a control rod is fixedly connected to the bottom surface of the control plate, a control groove is formed on the bottom surface inside the housing, the control groove and the control rod are movably fitted together, a first electromagnet is fixedly connected to the bottom surface inside the control groove, and a second electromagnet is fixedly connected to the bottom surface of the control rod, the first electromagnet and the second electromagnet are magnetically attracted together.

[0016] Preferably, an installation rod is fixedly connected to the top surface inside the housing, and an adjustment groove is formed on the bottom surface of the installation rod. A connecting rod is fixedly connected to the top surface of the sliding block, and the connecting rod is movably sleeved with the adjustment groove. A tension spring is fixedly connected to the top surface inside the adjustment groove, and the bottom end of the tension spring is fixedly connected to the top surface of the connecting rod.

[0017] Preferably, a ruler strip is fixedly connected to the inner side of the outer shell, and a toothed ring is fixedly connected to the outer wall of the positioning rod, the toothed ring engaging with the ruler strip.

[0018] Preferably, a mounting plate is fixedly connected to one side of the mounting block, a control hole is provided on the top surface of the mounting plate, an electromagnetic trip device is movably installed inside the control hole, and a pressing plate is fixedly connected to the top surface of the sliding block.

[0019] Preferably, a connecting block is fixedly connected to the bottom surface of the mounting block, a fixing frame is fixedly connected to the outer wall surface of the elastic sheet, one side of the fixing frame is fixedly connected to one side of the connecting block, two placement holes are opened on the bottom surface of the inner wall of the control groove, a pull rod is movably sleeved inside the placement hole, a pull rope is fixedly connected to the top surface of the pull rod, and the top end of the pull rope is fixedly connected to the bottom end of the control rod.

[0020] Preferably, a through hole is provided on one side of the housing, and a smart switch is fixedly connected inside the through hole. The smart switch is electrically connected to the second electromagnet and the first electromagnet, and the smart switch is electrically connected to the current voltage sensor and the infrared temperature sensor, respectively.

[0021] In summary, the present invention has the following main beneficial effects:

[0022] By designing an outer casing, when the operator electrically connects the two wires to the first and second connectors respectively, the current can be sent to the inside of the power supply wire through the first connector. Then, by bringing the moving contact piece and the stationary contact piece together, the current on the power supply wire is sent to the second connector through the elastic piece, allowing the two wires to be connected and energized. By setting up current and voltage sensors, and using them in conjunction with infrared temperature sensors, the current, voltage, and temperature of the power supply wire can be monitored when it is energized. If an abnormality occurs in the power supply wire, the moving contact piece and the stationary contact piece can be quickly separated, achieving the effect of breaking the circuit between the two wires. At the same time, by continuously monitoring the current, voltage, and temperature of the power supply wire when it is energized, transient fluctuations or continuous overloads can be detected, and power can be cut off and restored accordingly, thereby avoiding the impact of transient fluctuations on the operational stability of critical equipment.

[0023] By setting a sliding block, when the sliding block moves up and down inside the housing, the sliding block can drive the rotating rod to move up and down inside the housing via the positioning rod, so that the moving contact and the stationary contact can be separated, which facilitates the subsequent circuit breaking of the moving contact and the stationary contact. By setting a first electromagnet, the magnetic relationship between the first electromagnet and the second electromagnet can be controlled so that the first electromagnet and the second electromagnet can attract or repel each other. If the current voltage sensor and the infrared temperature sensor detect an abnormal power supply in the power transmission line, the first electromagnet and the second electromagnet will be attracted in the first instant, so that the second electromagnet can drive the control rod to move downward inside the control slot. At this time, the control rod can drive the sliding block to move via the control board. Therefore, in the event of an abnormal power supply in the power transmission line, the position of the sliding block inside the housing can be controlled in real time.

[0024] By incorporating a positioning rod, as the positioning rod moves downwards within the housing, the engagement of the toothed ring and the ruler allows the positioning rod to rotate within the housing. This adjusts the position between the moving contact and the protective plate, reducing the brief contact between the arc and the moving contact during rapid separation of the moving and stationary contacts. This improves the arc-extinguishing rate of the arc-extinguishing grid and further enhances the safety within the housing. Furthermore, by incorporating an intelligent switch, if the current and voltage sensors and the infrared temperature sensor detect transient fluctuations in the power supply line current under abnormal conditions, this signal is transmitted to the intelligent switch. This allows the intelligent switch to control the magnetic repulsion between the second and first electromagnets. When the electromagnetic trip unit impacts the pressing plate and causes the sliding block to move downward inside the housing, the magnetic repulsion between the second and first electromagnets, combined with the tension of the spring, prevents the moving contact from separating from the stationary contact. This avoids short circuits caused by transient current fluctuations, ensuring normal operation of the equipment and preventing shutdown from affecting its working state. In case of continuous overload, the first and second electromagnets are magnetically attracted, causing the moving contact to separate from the stationary contact, thus achieving precise power-off protection. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the outer shell structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the sliding block structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the extrusion plate structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the connecting block structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the positioning rod structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the mounting rod structure of the present invention;

[0032] Figure 8 for Figure 2 A magnified schematic diagram of part A in the diagram.

[0033] Reference numerals: 1. Housing; 2. Arc-extinguishing grid; 3. First connector; 4. Power supply line; 5. Stationary contact; 6. Second connector; 7. Elastic sheet; 8. Rotating rod; 9. Moving contact; 10. Protective sheet; 11. Mounting block; 12. Current and voltage sensor; 13. Placement slot; 14. Sliding block; 15. Rotating slot; 16. Positioning rod; 17. Positioning ring; 18. Positioning slot; 19. Control board; 20. Control rod; 21. Control 21. Slot; 22. First electromagnet; 23. Second electromagnet; 24. Mounting rod; 25. Adjusting slot; 26. Connecting rod; 27. Tension spring; 28. Ruler strip; 29. ​​Gear ring; 30. Mounting plate; 31. Control hole; 32. Electromagnetic trip unit; 33. Squeezing plate; 34. Connecting block; 35. Fixing frame; 36. Placement hole; 37. Pulling rod; 38. Pulling rope; 39. Through hole; 40. Smart switch; 41. Infrared temperature sensor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] refer to Figure 1 - Figure 8 A smart circuit breaker with multiple protections and high-precision detection includes:

[0036] The outer casing 1 has an arc-extinguishing grid 2 fixedly connected inside the outer casing 1, and a first connector 3 fixedly connected inside the outer casing 1.

[0037] The power supply line 4 is fixedly connected to the bottom surface of the first connector 3, and a stationary contact 5 is fixedly connected to the bottom surface of the power supply line 4.

[0038] The second connector 6 is fixedly connected inside the housing 1. An elastic sheet 7 is fixedly connected to the top surface of the second connector 6. A rotating rod 8 is provided inside the housing 1. A movable contact piece 9 is fixedly connected to the outer wall of the rotating rod 8. The movable contact piece 9 is attached to the elastic sheet 7. A protective sheet 10 is fixedly connected to the outer wall of the rotating rod 8. The protective sheet 10 is made of insulating material.

[0039] The detection component located inside the housing 1 can collect current, voltage and temperature signals in real time to distinguish between transient fluctuations and continuous overloads. The detection component includes a mounting block 11, which is fixedly connected inside the housing 1. A current and voltage sensor 12 is fixedly connected to one side of the mounting block 11. A placement groove 13 is opened on one side of the mounting block 11, and an infrared temperature sensor 41 is fixedly connected inside the placement groove 13.

[0040] A positioning component located inside the outer casing 1 is used to position the rotating rod 8.

[0041] By setting up the outer casing 1, when the operator electrically connects the two wires to the first connector 3 and the second connector 6 respectively, the current can be sent to the inside of the power supply wire 4 through the first connector 3. Then, by attaching the moving contact 9 and the stationary contact 5 together, the current on the power supply wire 4 is sent to the second connector 6 through the elastic piece 7, so that the two wires can be connected and energized. By setting up the current and voltage sensor 12, and using the current and voltage sensor 12 in conjunction with the infrared temperature sensor 41, the current, voltage and temperature of the power supply wire 4 when it is energized can be monitored. If the power supply wire 4 is in an abnormal situation, the moving contact 9 and the stationary contact 5 can be quickly separated to achieve the effect of breaking the circuit between the two wires. At the same time, by continuously monitoring the current, voltage and temperature of the power supply wire 4 when it is energized, transient fluctuations or continuous overloads can be detected, and power can be cut off and restored accordingly, so as to avoid the impact of transient fluctuations on the operational stability of critical equipment.

[0042] As a further aspect of the present invention, the positioning component includes:

[0043] The sliding block 14 is slidably installed inside the outer shell 1. A rotating groove 15 is provided on one side of the sliding block 14. A positioning rod 16 is fixedly connected to one end of the rotating rod 8. The positioning rod 16 is rotatably installed together with the rotating groove 15. A positioning ring 17 is fixedly connected to the outer wall of the positioning rod 16. A positioning groove 18 is provided on the inner wall of the rotating groove 15. The positioning ring 17 is movably fitted together with the positioning groove 18.

[0044] By setting the sliding block 14, when the sliding block 14 moves up and down inside the outer shell 1, the sliding block 14 can drive the rotating rod 8 to move up and down inside the outer shell 1 through the positioning rod 16, so that the moving contact 9 and the stationary contact 5 can be separated, which makes it easier to disconnect the moving contact 9 and the stationary contact 5 later. By using the limiting positioning ring 17, after the positioning ring 17 is movably sleeved with the positioning groove 18, the positioning ring 17 can position the positioning rod 16, thereby preventing the positioning rod 16 from moving out of the rotating groove 15.

[0045] As a further embodiment of the present invention, a control plate 19 is fixedly connected to one side of the sliding block 14, a control rod 20 is fixedly connected to the bottom surface of the control plate 19, a control groove 21 is opened on the bottom surface inside the outer shell 1, the control groove 21 and the control rod 20 are movably sleeved together, a first electromagnet 22 is fixedly connected to the bottom surface inside the control groove 21, a second electromagnet 23 is fixedly connected to the bottom surface of the control rod 20, and the first electromagnet 22 and the second electromagnet 23 are magnetically attracted together.

[0046] By setting the first electromagnet 22 and controlling the magnetism between the first electromagnet 22 and the second electromagnet 23, the first electromagnet 22 and the second electromagnet 23 can attract or repel each other. If the current voltage sensor 12 and the infrared temperature sensor 41 detect an abnormal power supply in the power supply line 4, the first electromagnet 22 and the second electromagnet 23 will be attracted to each other in the first instant, so that the second electromagnet 23 can drive the control rod 20 to move downward inside the control slot 21. At this time, the control rod 20 can drive the sliding block 14 to move through the control plate 19. Therefore, in the case of an abnormal power supply in the power supply line 4, the position of the sliding block 14 inside the outer casing 1 is controlled in real time.

[0047] As a further embodiment of the present invention, an installation rod 24 is fixedly connected to the top surface inside the outer shell 1, and an adjustment groove 25 is provided on the bottom surface of the installation rod 24. A connecting rod 26 is fixedly connected to the top surface of the sliding block 14, and the connecting rod 26 is movably sleeved together with the adjustment groove 25. A tension spring 27 is fixedly connected to the top surface inside the adjustment groove 25, and the bottom end of the tension spring 27 is fixedly connected to the top surface of the connecting rod 26.

[0048] By setting the tension spring 27, when the sliding block 14 is subjected to force and moves downward inside the outer shell 1, the sliding block 14 can drive the bottom end of the tension spring 27 to move downward through the connecting rod 26, so that the tension spring 27 is subjected to force and generates tension. If the sliding block 14 is no longer subjected to force and moves downward, the tension generated by the tension spring 27 can drive the sliding block 14 to move upward inside the outer shell 1, so that the sliding block 14 can move back to its original position. The attraction between the first electromagnet 22 and the second electromagnet 23 is much greater than the tension of the tension spring 27.

[0049] As a further embodiment of the present invention, a ruler strip 28 is fixedly connected to one side of the inner side of the outer shell 1, and a toothed ring 29 is fixedly connected to the outer wall of the positioning rod 16. The toothed ring 29 and the ruler strip 28 mesh together. Both the toothed ring 29 and the ruler strip 28 are made of insulating material.

[0050] By setting the positioning rod 16, when the positioning rod 16 moves downward inside the housing 1, the toothed ring 29 and the ruler 28 mesh together, so that the positioning rod 16 can rotate inside the housing 1 when moving downward, thereby adjusting the position between the moving contact 9 and the protective plate 10, thereby reducing the brief contact between the arc and the moving contact 9 when the moving contact 9 and the stationary contact 5 are quickly separated, thereby improving the arc extinguishing rate of the arc extinguishing grid 2 and further improving the safety inside the housing 1.

[0051] As a further embodiment of the present invention, a mounting plate 30 is fixedly connected to one side of the mounting block 11, a control hole 31 is provided on the top surface of the mounting plate 30, an electromagnetic trip device 32 is movably installed inside the control hole 31, and a pressing plate 33 is fixedly connected to the top surface of the sliding block 14.

[0052] By setting up an electromagnetic trip unit 32, when the electromagnetic trip unit 32 detects an abnormal current in the power supply line 4, it can quickly install the squeezing plate 33, so that the impacted squeezing plate 33 can drive the sliding block 14 to move downward inside the housing 1, so that the moving contact 9 separates from the stationary contact 5, achieving a preliminary circuit breaking effect.

[0053] As a further embodiment of the present invention, a connecting block 34 is fixedly connected to the bottom surface of the mounting block 11, a fixing frame 35 is fixedly connected to the outer wall surface of the elastic sheet 7, one side of the fixing frame 35 is fixedly connected to one side of the connecting block 34, and two placement holes 36 are opened on the bottom surface of the inner wall of the control groove 21. A pulling rod 37 is movably sleeved inside the placement hole 36, and a pulling rope 38 is fixedly connected to the top surface of the pulling rod 37. The top end of the pulling rope 38 is fixedly connected to the bottom end of the control rod 20.

[0054] By setting up a pull rod 37, staff can manually pull the pull rod 37 using insulated tools. The pull rod 37, through the pull rope 38, can drive the control rod 20 to move downward inside the control slot 21, thereby manually cutting off the current. This prevents the failure of the first electromagnet 22 and the second electromagnet 23 in the event of a short circuit, thus improving the protection effect against circuit breakers.

[0055] As a further embodiment of the present invention, a through hole 39 is provided on one side of the outer casing 1, and an intelligent switch 40 is fixedly connected inside the through hole 39. The intelligent switch 40 is electrically connected to the second electromagnet 23 and the first electromagnet 22, and the intelligent switch 40 is electrically connected to the current voltage sensor 12 and the infrared temperature sensor 41, respectively.

[0056] By setting up the intelligent switch 40, if the current and voltage sensor 12 and the infrared temperature sensor 41 detect that the current in the power supply line 4 is fluctuating under abnormal conditions, this signal is sent to the intelligent switch 40. The intelligent switch 40 can control the second electromagnet 23 and the first electromagnet 22 to repel each other magnetically. When the electromagnetic trip unit 32 hits the pressing plate 33 and drives the sliding block 14 to move downward inside the housing 1, the magnetic repulsion between the second electromagnet 23 and the first electromagnet 22, along with the tension of the tension spring 27, can prevent the moving contact 9 from separating from the stationary contact 5. This avoids short circuits caused by transient current fluctuations, allowing the equipment to operate normally and preventing shutdown from affecting the equipment's working status. If there is a continuous overload, the first electromagnet 22 and the second electromagnet 23 are magnetically attracted to separate the moving contact 9 from the stationary contact 5, thus completing precise power-off protection.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent circuit breaker with multiple protections and high-precision detection, characterized in that, include: The outer casing (1) has an arc-extinguishing grid (2) fixedly connected inside the outer casing (1) and a first connector (3) fixedly connected inside the outer casing (1). The power supply line (4) is fixedly connected to the bottom surface of the first connector (3), and a stationary contact (5) is fixedly connected to the bottom surface of the power supply line (4). The second connector (6) is fixedly connected inside the housing (1). An elastic sheet (7) is fixedly connected to the top surface of the second connector (6). A rotating rod (8) is provided inside the housing (1). A movable contact piece (9) is fixedly connected to the outer wall of the rotating rod (8). The movable contact piece (9) is in contact with the elastic sheet (7). A protective sheet (10) is fixedly connected to the outer wall of the rotating rod (8). The detection component located inside the housing (1) is used to detect the current of the power supply line (4). The detection component includes a mounting block (11), which is fixedly connected inside the housing (1). A current and voltage sensor (12) is fixedly connected to one side of the mounting block (11), and a placement groove (13) is opened on one side of the mounting block (11). An infrared temperature sensor (41) is fixedly connected inside the placement groove (13). A positioning component located inside the outer casing (1) is used to position the rotating rod (8).

2. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 1, characterized in that, The positioning component includes: A sliding block (14) is slidably installed inside the outer shell (1). A rotating groove (15) is provided on one side of the sliding block (14). A positioning rod (16) is fixedly connected to one end of the rotating rod (8). The positioning rod (16) is rotatably installed together with the rotating groove (15). A positioning ring (17) is fixedly connected to the outer wall of the positioning rod (16). A positioning groove (18) is provided on the inner wall of the rotating groove (15). The positioning ring (17) is movably sleeved together with the positioning groove (18).

3. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 2, characterized in that, A control plate (19) is fixedly connected to one side of the sliding block (14), and a control rod (20) is fixedly connected to the bottom surface of the control plate (19). A control groove (21) is opened on the bottom surface inside the outer shell (1). The control groove (21) and the control rod (20) are movably sleeved together. A first electromagnet (22) is fixedly connected to the bottom surface inside the control groove (21), and a second electromagnet (23) is fixedly connected to the bottom surface of the control rod (20). The first electromagnet (22) and the second electromagnet (23) are magnetically attracted together.

4. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 2, characterized in that, An installation rod (24) is fixedly connected to the top surface inside the outer shell (1). An adjustment groove (25) is provided on the bottom surface of the installation rod (24). A connecting rod (26) is fixedly connected to the top surface of the sliding block (14). The connecting rod (26) is movably sleeved with the adjustment groove (25). A tension spring (27) is fixedly connected to the top surface inside the adjustment groove (25). The bottom end of the tension spring (27) is fixedly connected to the top surface of the connecting rod (26).

5. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 2, characterized in that, A ruler strip (28) is fixedly connected to one side of the inner side of the outer shell (1), and a toothed ring (29) is fixedly connected to the outer wall of the positioning rod (16). The toothed ring (29) meshes with the ruler strip (28).

6. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 2, characterized in that, A mounting plate (30) is fixedly connected to one side of the mounting block (11). A control hole (31) is provided on the top surface of the mounting plate (30). An electromagnetic trip device (32) is movably installed inside the control hole (31). A pressing plate (33) is fixedly connected to the top surface of the sliding block (14).

7. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 3, characterized in that, The bottom surface of the mounting block (11) is fixedly connected to a connecting block (34), and the outer wall surface of the elastic sheet (7) is fixedly connected to a fixing frame (35). One side of the fixing frame (35) is fixedly connected to one side of the connecting block (34). The bottom surface of the inner wall of the control groove (21) has two placement holes (36). A pull rod (37) is movably fitted inside the placement hole (36). A pull rope (38) is fixedly connected to the top surface of the pull rod (37). The top end of the pull rope (38) is fixedly connected to the bottom end of the control rod (20).

8. The intelligent circuit breaker with multiple protections and high-precision detection according to claim 3, characterized in that, A through hole (39) is provided on one side of the outer shell (1). A smart switch (40) is fixedly connected inside the through hole (39). The smart switch (40) is electrically connected to the second electromagnet (23) and the first electromagnet (22). The smart switch (40) is also electrically connected to the current voltage sensor (12) and the infrared temperature sensor (41).

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