A 1U surge protector without circuit breaker

Abstract

The present application discloses a 1U surge protector without air switch, which relates to the technical field of surge protectors, and includes a shell, and a varistor arranged in the shell, the varistor is provided with a first electrode end and a second electrode end, a tripping electrode sheet is arranged in the shell, and the tripping electrode sheet is connected to the first electrode end by soldering; an overcurrent protection module is arranged in the shell, and the overcurrent protection module includes a static contact, an electromagnetic coil module, a moving contact connecting sheet, a second tension spring and a magnetic moving part. By adding an overcurrent protection module, the present application can quickly and effectively cut off the line when the tripping point of the surge protector cannot trip normally, thereby avoiding the combustion accident caused by the failure of the thermal tripping of the surge protector and the associated damage to the equipment.

Description

Technical Field

[0001] The present application relates to the technical field of surge protectors, and in particular to a 1U surge protector without circuit breaker. Background Art

[0002] 1U surge protector is a device used to protect electrical equipment from lightning or transient overvoltage damage. 1U is a standard size specified by the Electronic Industries Association (EIA) of the United States. It is a height unit suitable for server cabinets. Its height is 44.45 mm. 1U is also commonly referred to as "one rack unit" or "one cabinet unit". 1U surge protector can effectively protect electrical equipment from external interference such as power grid changes and lightning strikes. The installation and use of surge protector is very important, which determines the service life, safety and stability of the equipment.

[0003] A tripping mechanism is usually provided inside the surge protector, and the tripping point is connected by low-temperature soldering. When a fault current occurs, the varistor heats up and starts to melt when the temperature reaches the melting point of the solder at the tripping point. Under the traction of the spring force, the tripping point breaks, thereby cutting off the internal circuit of the surge protector and preventing the surge protector from burning due to overheating.

[0004] However, in actual applications, the surge protector may not trip normally due to extreme working conditions, aging of the varistor, failure of the tripping mechanism, etc., which may lead to tripping failure. Therefore, in order to avoid the safety hazards caused by the degradation of the varistor after long-term use or abnormal transient overvoltage, both the national standard and the communication industry standard stipulate that the front end of the surge protector needs to be equipped with a circuit breaker or fuse device; its function is to cut off the circuit in time after the tripping mechanism inside the surge protector fails, preventing the surge protector from catching fire.

[0005] However, according to conventional configuration, the circuit breaker or fuse that can meet the surge current impact is usually above 80A, while the national standard and communication industry standard stipulate that the thermal tripping current of the surge protector itself is within 10A. In the actual use environment, due to power supply capacity, grounding resistance and other reasons, when the varistor deteriorates, a current of tens of amperes is widely present in the surge protector circuit, especially in remote mountainous areas or remote communication base stations where the power supply capacity is insufficient and the voltage is unstable. There is a certain protection blind spot between the circuit breaker or fuse device and the thermal tripping current of the lightning arrester itself, which makes the circuit breaker or fuse device unable to effectively protect the surge protector. Summary of the invention

[0006] In view of the problems existing in the prior art, the present application provides a 1U surge protector without circuit breaker.

[0007] The present application provides a 1U surge protector without circuit breaker, which adopts the following technical solution:

[0008] A 1U surge protector without air switch, comprising a shell, and a varistor arranged in the shell, the shell is provided with a pin spring piece A and a pin spring piece B, the varistor is provided with a first electrode end and a second electrode end, a sliding plate is slidably arranged in the shell, a tripping electrode piece is connected to the sliding plate, the tripping electrode piece is electrically connected to the pin spring piece A, and the tripping electrode piece is connected to the first electrode end by soldering, a first tension spring for driving the sliding plate to slide is arranged in the shell, and the first tension spring is used to drive the tripping electrode piece to slide in a direction away from the first electrode end;

[0009] An overcurrent protection module is arranged in the shell, and the overcurrent protection module includes a static contact, an electromagnetic coil module, a moving contact connecting piece, a second tension spring and a magnetic moving piece. The electromagnetic coil module is respectively connected in series with the second electrode end and the static contact, and the moving contact connecting piece is slidingly arranged in the shell, and the moving contact connecting piece is electrically connected to the pin spring piece B. A moving contact is arranged on the moving contact connecting piece, and the moving contact is used to abut the static contact. The second tension spring is used to drive the moving contact connecting piece to slide in a direction away from the static contact. The magnetic moving piece is slidingly arranged on the electromagnetic coil module, and the electromagnetic coil module is used to drive the magnetic moving piece to slide. A sliding hole for inserting the magnetic moving piece is arranged on the moving contact connecting piece, and the magnetic moving piece is used to prevent the moving contact connecting piece from sliding.

[0010] Optionally, a remote signaling reed is also provided on the shell, a micro switch is provided in the shell, the micro switch is electrically connected to the remote signaling reed, the first tension spring is used to drive the sliding plate to slide toward the micro switch and press the contact handle of the micro switch, the second tension spring is used to drive the moving contact connecting plate to slide toward the micro switch, a touch block is connected to the moving contact connecting plate, and the touch block is used to press the contact handle of the micro switch, and the micro switch is used to send an alarm signal of surge protector failure.

[0011] Optionally, the electromagnetic coil module includes a mounting base and a coil, the mounting base is mounted in a shell, the coil is mounted on the mounting base, and two ends of the coil are electrically connected to the second electrode end and the static contact respectively, and the magnetic moving part is slidably arranged on the mounting base and is located inside the coil.

[0012] Optionally, the mounting base includes a bracket and an insulating tube, the bracket is provided with a placement groove for placing the insulating tube, the coil is wound on the insulating tube, and the magnetic moving part includes a moving iron core, and the moving iron core is slidably inserted into the insulating tube.

[0013] Optionally, a mounting groove for placing the bracket is provided in the shell, and the mounting groove is adapted to the bracket.

[0014] Optionally, a static iron core is arranged in the insulating tube, and a spring is arranged in the insulating tube and between the static iron core and the moving iron core, and the spring is used to drive the moving iron core to slide toward the moving contact connecting piece.

[0015] Optionally, the overcurrent protection module also includes a gas discharge tube, which is arranged in a shell, and a first gas discharge pin and a second gas discharge pin are respectively provided at both ends of the gas discharge tube, the first gas discharge pin is electrically connected to the second electrode end, and the second gas discharge pin is connected to the static contact.

[0016] Optionally, a sliding groove is provided in the housing along the sliding direction of the moving contact connecting piece, a sliding portion is provided on the moving contact connecting piece, and the sliding portion is slidably provided in the sliding groove.

[0017] Optionally, the sliding directions of the stationary contact and the moving contact connecting pieces are parallel, and the contact surfaces of the stationary contact and the moving contact abut against each other.

[0018] Optionally, an elastic connecting portion is provided on the moving contact connecting piece, and the moving contact is mounted on the elastic connecting portion.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When in use, connect the pin spring A and the pin spring B to the positive and negative poles of the circuit respectively, so that the surge protector is connected in parallel in the circuit, and a complete circuit is formed inside the surge protector. When there is an industrial frequency overvoltage, the industrial frequency current causes the varistor to heat up sharply, and the soldering between the tripping electrode sheet and the first electrode end melts due to the high temperature. At this time, the sliding plate slides under the elastic force of the first tension spring, so that the tripping electrode sheet moves away from the first electrode end, thereby cutting off the circuit. When the equipment fails, for example, because the varistor is aged, or because of a circuit problem that causes the soldering to fail to melt and trip normally, the industrial frequency current passes through the electromagnetic coil module, and drives the magnetic moving part to slide under the action of the magnetic field force, so that the magnetic moving part slides out of the sliding hole on the moving contact connecting piece, and the limit on the moving contact connecting piece is cancelled. At this time, the moving contact connecting piece slides away from the static contact under the elastic force of the second tension spring, so that the moving contact is separated from the static contact, thereby cutting off the circuit. Compared with the prior art method of setting the trip point with low-temperature solder, this solution, by adding an overcurrent protection module, can quickly and effectively cut off the line when the trip point of the surge protector cannot trip normally, thereby avoiding burning accidents and collateral damage to the equipment caused by the failure of the surge protector to trip due to thermal tripping.

[0021] 2. When the surge protector of the present application is in use, the pin reed A and the pin reed B do not need to distinguish between the positive and negative poles. Specifically, the pin reed A can be connected to the positive pole of the circuit, and the pin reed B can be connected to the negative pole of the circuit; or the pin reed B can be connected to the positive pole of the circuit, and the pin reed A can be connected to the negative pole of the circuit, both of which can form a complete circuit inside the surge protector, thereby improving practicality and ease of use.

[0022] 3. This application integrates the overcurrent protection module into the shell and connects the electromagnetic coil module in series in the circuit. The electromagnetic effect drives the magnetic moving part to slide, and the tension of the second tension spring is combined to achieve rapid cutting off of the circuit when overvoltage occurs. The overall integration is high, which effectively saves the occupancy rate of the internal space of the surge protector.

[0023] 4. By arranging a gas discharge tube in the shell and connecting the coil in parallel with the gas discharge tube, the coil's characteristic of resisting high-frequency current is utilized. When a surge current occurs, the gas discharge tube will change from an open circuit to a passage under the influence of the surge current, thereby being able to smoothly conduct the surge current. When the trip point of the varistor fails, at this time, the power frequency voltage is lower than the starting voltage of the gas discharge tube. Therefore, the power frequency voltage forms a current on the coil through the coil, generates magnetic force, and drives the magnetic moving part to slide through the electromagnetic effect, thereby realizing rapid disconnection of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the interior of the housing used in Example 1 of the present application;

[0025] Figure 2 is a schematic diagram of the structure of the electromagnetic coil module used in Example 1 of the present application;

[0026] Figure 3 This is an exploded diagram of the structure of the electromagnetic coil module used to express the embodiment 1 of the present application;

[0027] Figure 4 It is an exploded view of the structure of the sliding plate used to express the embodiment 1 of the present application;

[0028] Figure 5 is a circuit schematic diagram of Example 2 of the present application;

[0029] Figure 6 This is the circuit schematic diagram of Example 3 of the present application.

[0030] Description of reference numerals: 1, housing; 11, pin spring A; 12, pin spring B; 13, inner housing; 14, first tension spring; 15, static contact; 16, mounting slot; 17, slide slot; 18, second tension spring; 19, remote signal spring; 2, varistor; 21, first electrode end; 22, second electrode end; 3, sliding plate; 31, tripping electrode sheet; 311, welding sheet; 32, plug hole; 100, overcurrent protection module ; 4. Electromagnetic coil module; 41. Mounting base; 411. Bracket; 412. Insulating tube; 42. Coil; 43. Moving iron core; 44. Static iron core; 45. Spring; 5. Moving contact connecting piece; 51. Moving contact; 52. Sliding part; 53. Sliding hole; 54. Elastic connecting part; 55. Trigger block; 56. Plug-in part; 6. Gas discharge tube; 61. First pin of gas discharge; 62. Second pin of gas discharge; 7. Micro switch. DETAILED DESCRIPTION

[0031] The following will be combined with the attached Figure 1 -Attached Figure 6 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0032] The inventors of the present application have discovered that when a traditional surge protector is in use, a circuit breaker or a fuse is connected in series at the front end of the surge protector. Its function is to cut off the circuit in time after the tripping mechanism inside the surge protector fails, so as to prevent the surge protector from catching fire. However, in the actual use environment, due to the power supply capacity, grounding resistance and other reasons, when the varistor deteriorates, a current of tens of amperes is widely present in the surge protector circuit. Especially in remote mountainous areas or remote communication base stations where the power supply capacity is insufficient and the voltage is unstable, there is a certain protection blind spot between the circuit breaker or the fuse device and the thermal tripping current of the lightning arrester itself, which results in the circuit breaker or the fuse device being unable to effectively protect the surge protector. To this end, the present application discloses a 1U surge protector without a circuit breaker, which mainly adopts the following scheme: Example 1

[0033] Embodiment 1 of the present application discloses a 1U surge protector without circuit breaker. Figure 1, including a shell 1, a pin reed A11 and a pin reed B12 arranged on the shell 1, and a varistor 2 arranged in the shell 1, the varistor 2 is provided with a first electrode terminal 21 and a second electrode terminal 22, an inner shell 13 is arranged in the shell 1, the inner shell 13 is covered on the varistor 2, a sliding plate 3 is slidably arranged on the inner shell 13, a tripping electrode sheet 31 is connected to the sliding plate 3, the tripping electrode sheet 31 is electrically connected to the pin reed A11 through a braided wire, and the tripping electrode sheet 31 is connected to the first electrode terminal 21 through soldering.

[0034] Reference Figure 1 A first tension spring 14 is arranged in the shell 1, and two first tension springs 14 are arranged and are arranged on both sides of the sliding plate 3. One end of the first tension spring 14 is connected to the inner shell 13, and one end of the first tension spring 14 is connected to the sliding plate 3, which is used to drive the sliding plate 3 to slide and drive the tripping electrode sheet 31 to slide away from the first electrode end 21.

[0035] Reference Figure 1 and Figure 2 An overcurrent protection module 100 is arranged in the shell 1, and the overcurrent protection module 100 includes a static contact 15, an electromagnetic coil module 4, a moving contact connecting piece 5, a second tension spring 18 and a magnetic moving part. The overcurrent protection module is integrated and installed in the shell 1, and the electromagnetic coil module 4 is respectively connected in series with the second electrode end 22 and the static contact 15. The overall integration of the device is high, which effectively saves the occupancy rate of the internal space of the surge protector. Specifically, the electromagnetic coil module 4 includes a mounting base 41 and a coil 42. The mounting base 41 is installed in the shell 1. The mounting base 41 includes a bracket 411 and an insulating tube 412. A mounting groove 16 for placing the bracket 411 is provided in the shell 1. The mounting groove 16 is adapted to the bracket 411. A placement groove for placing the insulating tube 412 is provided on the bracket 411, and the insulating tube 412 is placed in the placement groove of the bracket 411. The coil 42 is wound on the insulating tube 412, and the two ends of the coil 42 are electrically connected to the second electrode terminal 22 and the static contact 15 respectively, forming a series passage between the coil 42 and the second electrode terminal 22 and the static contact 15.

[0036] Reference Figure 1 and Figure 2 The moving contact connecting piece 5 is slidably arranged in the housing 1, and the moving contact connecting piece 5 is electrically connected to the pin spring piece B12 through a braided wire. A moving contact 51 is fixedly connected to the moving contact connecting piece 5, and the moving contact 51 abuts against the static contact 15; a sliding groove 17 is arranged in the housing 1 along the sliding direction of the sliding plate 3, and a sliding portion 52 is arranged on the moving contact connecting piece 5, and the sliding portion 52 is slidably arranged in the sliding groove 17 to limit the sliding of the moving contact connecting piece 5. A second tension spring 18 is arranged in the housing 1, and both ends of the second tension spring 18 are respectively connected to the housing 1 and the moving contact connecting piece 5, and are used to drive the moving contact connecting piece 5 to slide in a direction away from the static contact 15.

[0037] Reference Figure 2 and Figure 3 The magnetic moving part adopts a moving iron core 43, which is slidably inserted into the insulating tube 412. The moving contact connecting piece 5 is provided with a sliding hole 53 for inserting the moving iron core 43. The insulating tube 412 is also provided with a static iron core 44, one end of which is located outside the insulating tube 412. The bracket 411 is provided with a slot for placing the static iron core 44. A spring 45 is provided in the insulating tube 412 and between the static iron core 44 and the moving iron core 43, and the two ends of the spring 45 are respectively The spring 45 is in contact with the moving iron core 43 and the stationary iron core 44, and is used to drive the moving iron core 43 to slide toward the moving contact connecting piece 5, and insert it into the sliding hole 53 of the moving contact connecting piece 5, so as to limit the moving contact connecting piece 5; when no current passes through the coil 42, or the current passing through is less than the preset value, the magnetic moving part is always inserted in the sliding hole 53 of the moving contact connecting piece 5 under the elastic force of the spring 45, so as to ensure the stability of the moving iron core 43 when limiting the moving contact connecting piece 5.

[0038] When in use, the pin spring A11 and the pin spring B12 are respectively connected to the positive and negative poles of the circuit, so that the surge protector is connected in parallel in the circuit, and a complete circuit is formed inside the surge protector. When an overvoltage is generated, the power frequency current causes the varistor 2 to heat up rapidly, and the soldering between the tripping electrode sheet 31 and the first electrode end 21 melts due to the high temperature. At this time, the sliding plate 3 slides under the elastic force of the first tension spring 14, so that the tripping electrode sheet 31 is away from the first electrode end 21, thereby cutting off the circuit. When the equipment fails, for example, due to aging of the varistor 2, or due to line problems that cause the soldering to fail to melt and trip normally, the power frequency current passes through the coil 42 and forms a high-frequency magnetic field in the coil 42. The moving iron core 43 slides under the action of the magnetic field force and slides out of the sliding hole 53 on the moving contact connecting piece 5, canceling the limit on the moving contact connecting piece 5. At this time, the moving contact connecting piece 5 slides away from the static contact 15 under the elastic force of the second tension spring 18, so that the moving contact 51 is separated from the static contact 15, thereby cutting off the line.

[0039] Furthermore, when the surge protector is in use, the pin reed A11 and the pin reed B12 do not need to distinguish between positive and negative poles. Specifically, the pin reed A11 can be connected to the positive pole of the circuit, and the pin reed B12 can be connected to the negative pole of the circuit; or the pin reed B12 can be connected to the positive pole of the circuit, and the pin reed A11 can be connected to the negative pole of the circuit, both of which can form a complete circuit inside the surge protector, thereby improving practicality and ease of use.

[0040] Reference Figure 2The sliding direction of the moving contact connecting piece 5 is parallel to the contact surface of the static contact 15 for abutting the moving contact 51, and the contact surfaces of the static contact 15 and the moving contact 51 abut each other. The static contact 15 and the moving contact 51 are connected by sliding contact, ensuring the connection reliability between the moving contact 51 and the static contact 15. The moving contact connecting piece 5 is made of elastic steel. An elastic connecting portion 54 is provided on the moving contact connecting piece 5. The elastic connecting portion 54 is integrally formed with the moving contact connecting piece 5. The moving contact 51 is fixedly connected to the elastic connecting portion 54. The edges of the static contact 15 and the moving contact 51 are both chamfered. The moving contact 51 presses the static contact 15 under the elastic force of the elastic connecting portion 54, ensuring the connection effect between the static contact 15 and the moving contact 51.

[0041] Reference Figure 1 and Figure 2 The overcurrent protection module 100 also includes a gas discharge tube 6, which is installed in the shell 1. The two ends of the gas discharge tube 6 are respectively provided with a first gas discharge pin 61 and a second gas discharge pin 62. The first gas discharge pin 61 is electrically connected to the second electrode end 22, and the static contact 15 is fixedly connected to the second gas discharge pin 62. The coil 42 is connected in parallel with the gas discharge tube 6. The characteristic of the coil 42 to resist high-frequency current is utilized. When a surge current occurs, the gas discharge tube 6 will change from an open circuit to a passage under the influence of the surge current, so that the surge current can be smoothly discharged; and when the tripping point of the varistor 2 fails, at this time, the power frequency voltage is lower than the starting voltage of the gas discharge tube 6, therefore, the power frequency voltage forms a current on the coil 42 through the coil 42, generates magnetic force and drives the moving iron core 43 to slide through the electromagnetic effect, thereby realizing rapid disconnection of the line.

[0042] Reference Figure 1 and Figure 4 A remote signal reed 19 is also provided on the housing 1, and a micro switch 7 is provided in the housing 1. The micro switch 7 is electrically connected to the remote signal reed 19. When the soldering between the tripping electrode sheet 31 and the first electrode terminal 21 melts and trips due to high temperature, the sliding plate 3 slides toward the micro switch 7 under the elastic force of the first tension spring 14 and presses the contact handle of the micro switch 7; when the moving iron core 43 exits the sliding hole 53 on the moving contact connecting piece 5 under the action of the magnetic force, the moving contact connecting piece 5 slides toward the micro switch 7 under the tension of the second tension spring 18, and a touch block 55 is connected to the moving contact connecting piece 5, and the touch block 55 presses the contact handle of the micro switch 7 under the tension of the second tension spring 18; when the contact handle of the micro switch 7 is subjected to the pressing force of the sliding plate 3 or the touch block 55, an alarm signal of failure of the surge protector is sent to the terminal device, thereby promptly informing the staff to perform maintenance.

[0043] Reference Figure 4The sliding plate 3 and the trigger block 55 are both made of plastic or other insulating materials. The sliding plate 3 is provided with a plug hole 32 for inserting the tripping electrode sheet 31, and the tripping electrode sheet 31 is integrally formed with a welding sheet 311, and the welding sheet 311 is connected to the first electrode terminal 21 by soldering; the moving contact connecting sheet 5 is provided with a plug-in portion 56, and the trigger block 55 is provided with a plug-in slot for inserting the plug-in portion 56. The tripping electrode sheet 31 is connected to the sliding plate 3 by plug-in assembly, and the moving contact connecting sheet 5 is connected to the trigger block 55 by plug-in assembly, which is convenient for product assembly and function realization.

[0044] The implementation principle of a 1U surge protector without a circuit breaker in Example 1 of the present application is as follows: when in use, the pin spring A11 and the pin spring B12 are respectively connected to the positive and negative poles of the line, so that the surge protector is connected in parallel in the line, and a complete circuit is formed inside the surge protector. When an industrial frequency overvoltage is generated, the industrial frequency current causes the varistor 2 to heat up rapidly, and the soldering between the tripping electrode sheet 31 and the first electrode end 21 melts due to the high temperature. At this time, the sliding plate 3 slides under the elastic force of the first tension spring 14, so that the tripping electrode sheet 31 is away from the first electrode end 21, thereby cutting off the line. When the equipment fails, for example, because the varistor 2 ages, or because of line problems that cause the soldering to fail to melt and trip normally, the power frequency current passes through the coil 42 and forms a high-frequency magnetic field in the coil 42. The moving iron core 43 slides under the force of the magnetic field and slides out of the sliding hole 53 on the moving contact connecting piece 5, canceling the limit on the moving contact connecting piece 5. At this time, the moving contact connecting piece 5 slides away from the static contact 15 under the elastic force of the second tension spring 18, so that the moving contact 51 is separated from the static contact 15, thereby cutting off the line. Compared with the method of setting the trip point with low-temperature solder in the prior art, this solution can quickly and effectively cut off the line when the trip point of the surge protector cannot trip normally by adding the overcurrent protection module 100, thereby avoiding the burning accident caused by the failure of the thermal tripping of the surge protector and the associated damage to the equipment. Example 2

[0045] Reference Figure 5, which is different from Example 1 in that: the overcurrent protection module 100 is integrated and installed between the tripping electrode sheet 31 and the pin spring sheet A11, the moving contact 51 is electrically connected to the pin spring sheet A11 through a braided wire, the coil 42 is respectively connected in series with the tripping electrode sheet 31 and the static contact 15, the first gas discharge pin 61 of the gas discharge tube 6 is electrically connected to the tripping electrode sheet 31, the second gas discharge pin 62 is electrically connected to the static contact 15, and the pin spring sheet B12 is directly electrically connected to the second electrode end 22 of the varistor 2, and the pin spring sheet B12 is grounded to form a complete loop, and the fault current or transient overvoltage first passes through the coil 42 of the overcurrent protection module 100, then passes through the tripping electrode sheet 31, and then enters the varistor 2, and finally is connected to the ground through the pin spring sheet B12. Example 3

[0046] Reference Figure 6 , which is different from Embodiment 2 in that: the overcurrent protection module 100 is set as a separate module, and the overcurrent protection module 100 is fixed on the surge protector by bolts or locks, and at the same time, connection ports for connection are provided on the overcurrent protection module 100 and the surge protector. The overcurrent protection module 100 can be quickly installed, and the subsequent maintenance or iterative upgrade of the overcurrent protection module 100 is convenient.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A 1U surge protector without circuit breaker, characterized by: The invention comprises a shell (1) and a varistor (2) arranged in the shell (1), wherein the shell (1) is provided with a pin spring piece A (11) and a pin spring piece B (12), and the varistor (2) is provided with a first electrode end (21) and a second electrode end (22). A sliding plate (3) is slidably arranged in the shell (1), and a tripping electrode piece (31) is connected to the sliding plate (3), and the tripping electrode piece (31) is electrically connected to the pin spring piece A (11), and the tripping electrode piece (31) is connected to the first electrode end (21) by soldering. A first tension spring (14) for driving the sliding plate (3) to slide is arranged in the shell (1), and the first tension spring (14) is used to drive the tripping electrode piece (31) to slide in a direction away from the first electrode end (21); An overcurrent protection module (100) is arranged in the housing (1), and the overcurrent protection module (100) comprises a stationary contact (15), an electromagnetic coil module (4), a moving contact connecting piece (5), a second tension spring (18) and a magnetic moving part, the electromagnetic coil module (4) is respectively connected in series with the second electrode terminal (22) and the stationary contact (15), the moving contact connecting piece (5) is slidably arranged in the housing (1), the moving contact connecting piece (5) is electrically connected to the pin spring piece B (12), and the moving contact A moving contact (51) is arranged on the connecting piece (5), the moving contact (51) is used to abut against the stationary contact (15), the second tension spring is used to drive the moving contact connecting piece (5) to slide in a direction away from the stationary contact (15), the magnetic moving piece is slidably arranged on the electromagnetic coil module (4), the electromagnetic coil module (4) is used to drive the magnetic moving piece to slide, the moving contact connecting piece (5) is provided with a sliding hole (53) for inserting the magnetic moving piece, and the magnetic moving piece is used to prevent the moving contact connecting piece (5) from sliding; The electromagnetic coil module (4) comprises a mounting base (41) and a coil (42), wherein the mounting base (41) is mounted in the housing (1), the coil (42) is mounted on the mounting base (41), and two ends of the coil (42) are respectively electrically connected to the second electrode terminal (22) and the static contact (15), and the magnetic moving part is slidably arranged on the mounting base (41) and is located inside the coil (42); The mounting base (41) comprises a bracket (411) and an insulating tube (412); the bracket (411) is provided with a placement groove for placing the insulating tube (412); the coil (42) is wound on the insulating tube (412); the magnetic moving part comprises a moving iron core (43); and the moving iron core (43) is slidably inserted into the insulating tube (412); A mounting groove (16) for accommodating the bracket (411) is provided in the housing (1), and the mounting groove (16) is adapted to the bracket (411).

2. The 1U surge protector without circuit breaker according to claim 1, characterized in that: A remote signaling reed (19) is also provided on the housing (1), a micro switch (7) is provided in the housing (1), the micro switch (7) is electrically connected to the remote signaling reed (19), the first tension spring (14) is used to drive the sliding plate (3) to slide towards the micro switch (7) and to press the contact handle of the micro switch (7), the second tension spring (18) is used to drive the moving contact connecting piece (5) to slide towards the micro switch (7), the moving contact connecting piece (5) is connected to a trigger block (55), and the trigger block (55) is used to press the contact handle of the micro switch (7), and the micro switch (7) is used to send an alarm signal of failure of the surge protector.

3. The 1U surge protector without circuit breaker according to claim 1, characterized in that: A static iron core (44) is arranged in the insulating tube (412), and a spring (45) is arranged in the insulating tube (412) and between the static iron core (44) and the moving iron core (43), and the spring (45) is used to drive the moving iron core (43) to slide in a direction close to the moving contact connecting piece (5).

4. The 1U surge protector without circuit breaker according to claim 1, characterized in that: The overcurrent protection module (100) further comprises a gas discharge tube (6), wherein the gas discharge tube (6) is arranged in the housing (1), and a first gas discharge pin (61) and a second gas discharge pin (62) are respectively arranged at two ends of the gas discharge tube (6), wherein the first gas discharge pin (61) is electrically connected to the second electrode end (22), and the second gas discharge pin (62) is connected to the static contact (15).

5. The 1U surge protector without circuit breaker according to claim 1, characterized in that: A sliding groove (17) is provided in the housing (1) along the sliding direction of the moving contact connecting piece (5); a sliding portion (52) is provided on the moving contact connecting piece (5), and the sliding portion (52) is slidably arranged in the sliding groove (17).

6. The 1U surge protector without circuit breaker according to claim 5, characterized in that: The sliding directions of the stationary contact (15) and the moving contact connecting piece (5) are parallel, and the contact surfaces of the stationary contact (15) and the moving contact (51) abut against each other.

7. The 1U surge protector without circuit breaker according to claim 6, characterized in that: The moving contact connecting piece (5) is provided with an elastic connecting portion (54), and the moving contact (51) is mounted on the elastic connecting portion (54).

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