Surge protection device module box and surge protection device

Abstract

The surge protection device module box comprises a shell, a piezoresistor, an elastic recovery piece, a first electric connecting piece and a second electric connecting piece, the shell is provided with an indication window, the piezoresistor is rotatably arranged in the shell, the piezoresistor is provided with a degradation indicator, the degradation indicator can rotate along with the piezoresistor, and the first electric connecting piece is connected with the second electric connecting piece. The first end of the elastic recovery piece is fixedly arranged in the shell, the second end of the elastic recovery piece is connected with the piezoresistor, the first electric connecting piece and the second electric connecting piece are connected with the piezoresistor through low-temperature tin soldering, when the temperature of the piezoresistor exceeds a low-temperature tin soldering fusing temperature threshold value, the first electric connecting piece, the second electric connecting piece and the piezoresistor are in disconnected connection, and the elastic recovery piece resets. The piezoresistor is driven to rotate, and the degradation indicator on the piezoresistor rotates to correspond to the indication window. According to the surge protection device module box provided by the utility model, the internal structure is exquisite and matched, and the lightening and thinning of the surge protection device module box are realized. The utility model also provides a surge protection device.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection, in particular to a surge protector module box and a surge protector. Background Art

[0002] SPD, or surge protector, is also called lightning arrester. It is an electronic device that provides safety protection for various electronic equipment, instruments and meters, and communication lines. In a low-voltage power distribution system, when a spike current or voltage suddenly occurs in an electrical circuit or communication line due to external interference, the surge protector can conduct and shunt in a very short time, such as overvoltage caused by lightning, thereby avoiding damage to other equipment in the circuit caused by the surge. The SPD surge protector can discharge lightning current and protect electrical equipment from lightning strikes. The surge protector generally includes a surge protector base and a surge protector module box that can be plugged into the surge protector base. The existing surge protector module box is mostly 18mm thick, which occupies a large installation space and is not conducive to use in micro power supply circuits. Summary of the invention

[0003] In view of this, the utility model aims to provide a novel surge protector module box with a small thickness and reduced space occupation.

[0004] In order to achieve the purpose of the utility model, a surge protector module box is provided. The surge protector module box includes a shell, a varistor, an elastic recovery member, a first electrical connector and a second electrical connector. An indication window is provided on the shell. The varistor is rotatably arranged in the shell. A degradation indicator is provided on the varistor. The degradation indicator can rotate with the varistor. The first end of the elastic recovery member is fixedly arranged in the shell, and the second end is connected to the varistor. The first electrical connector and the second electrical connector are respectively connected to the varistor by low-temperature soldering. When the temperature of the varistor exceeds the low-temperature soldering melting temperature threshold, the first electrical connector and the second electrical connector are disconnected from the varistor, the elastic recovery member drives the varistor to rotate, and the degradation indicator on the varistor rotates to correspond to the indication window.

[0005] Optionally, the cross-section of the varistor is circular. A limit plate is provided in the housing. The limit plate is arranged around the outer edge of the varistor to limit the rotation range of the varistor.

[0006] Optionally, the surge protector module box further comprises a remote signal transmission component. One end of the remote signal transmission component is arranged in the housing and abuts against the varistor, and the other end passes through the housing to extend outward and abuts against an external remote signal circuit.

[0007] Optionally, a first electrode sheet and a second electrode sheet are provided on the varistor. The first electrode sheet is fixedly attached to the first surface of the varistor. The first electrode sheet includes a first electrode welding end and a remote signal abutment end. The first electrode welding end extends out of the varistor and is connected to the first electrical connector by low-temperature soldering. The remote signal abutment end extends out of the varistor and abuts against the remote signal transmission component. The second electrode sheet is fixedly attached to the second surface of the varistor. The second electrode sheet includes a second electrode welding end. The second electrode welding end extends out of the varistor and is connected to the second electrical connector by the low-temperature soldering.

[0008] Optionally, a hanging plate is provided on the second electrode welding end, the hanging plate is hung with the second end of the elastic recovery member, and the initial state of the elastic recovery member is a stretched state.

[0009] Optionally, the limit plate includes a degradation indication clearance notch, a first electrode sheet clearance notch, a remote signal clearance notch, and a second electrode sheet clearance notch. The degradation indication clearance notch is arranged corresponding to the indication window. The first electrode sheet clearance notch is arranged corresponding to the first electrode welding end clamping. The remote signal clearance notch is arranged corresponding to the remote signal abutting end of the first electrode sheet. The second electrode sheet clearance notch is arranged corresponding to the second electrode welding end of the second electrode sheet.

[0010] Optionally, the first electrical connector is an electrical input terminal. The second electrical connector is an electrical output terminal. The first electrical connector and the second electrical connector are respectively fixedly arranged on the shell. The first electrical connector includes a first welding terminal and a first plug terminal. The first welding terminal is fixedly arranged in the shell and connected to the varistor by low-temperature soldering. The first plug terminal extends out of the shell. The second electrical connector includes a second welding terminal and a second plug terminal. The second welding terminal is fixedly arranged in the shell and connected to the varistor by low-temperature soldering. The second plug terminal extends out of the shell.

[0011] Optionally, the remote signal transmission assembly includes a spring and a remote signal rod. The spring is sleeved on the outside of the remote signal rod. The remote signal rod is provided with a convex ring. One end of the spring abuts against the convex ring, and the other end abuts against the inside of the housing. One end of the remote signal rod abuts against the remote signal abutting end, and the other end abuts against the external remote signal circuit.

[0012] Optionally, a stop plate, a boss and a first annular protrusion are further provided in the shell. The stop plate is located on one side of the remote signal abutment end of the first electrode sheet. The first end of the elastic return member is sleeved on the boss. The first annular protrusion is arranged on the inner side surface of the shell and abuts against the second side of the varistor. The surge protector module box also includes a cover body. The cover body and the shell are buckled to each other to accommodate the varistor and the elastic return member therein. A second annular protrusion is provided on the inner side surface of the cover body. The second annular protrusion abuts against the first side of the varistor.

[0013] The utility model also provides a surge protector. The surge protector comprises a surge protector base and the aforementioned surge protector module box. A remote signaling circuit is provided in the surge protector base, and a micro switch is provided on the remote signaling circuit. The surge protector module box is pluggably connected to the surge protector base through the first electrical connector and the second electrical connector. The remote signaling transmission component of the surge protector module box abuts against the micro switch.

[0014] The utility model provides a surge protector module box, which uses low-temperature soldering to fix the varistor with the first electrical connector and the second electrical connector. When the varistor heats up, the solder can be quickly melted, and the elastic recovery member drives the varistor to rotate, and the degradation indicator on the varistor rotates to a specified position for near-end indication. At the same time, the remote signal transmission component loses the contact with the varistor and pops up to disconnect the connection with the remote signal circuit, realizing the function of remotely alarming the user. The surge protector module box provided by the utility model has a sophisticated internal structure, which realizes the lightness and thinness of the surge protector module box and reduces the installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0016] Figure 1 A schematic structural diagram of a surge protector provided in one embodiment of the utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the remote signal circuit board and the micro switch in the surge protector.

[0018] Figure 3 A schematic structural diagram of a surge protector module box provided in one embodiment of the utility model.

[0019] Figure 4 for Figure 3 A schematic structural diagram of the cover body in the surge protector module box.

[0020] Figure 5 for Figure 3 A schematic structural diagram of the shell in the surge protector module box.

[0021] Figure 6 for Figure 3 A schematic diagram of the planar structure of the interior of the surge protector module box in one state.

[0022] Figure 7 for Figure 6 A schematic diagram of the three-dimensional structure inside the surge protector module box in the described state.

[0023] Figure 8 for Figure 3 A schematic diagram of the structure of the varistor in the surge protector module box.

[0024] Fig. 9 for Figure 3 A schematic plan view of the structure of the interior of the surge protector module box in another state.

[0025] Fig.10 for Fig. 9 A schematic diagram of the three-dimensional structure inside the surge protector module box in the described state. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0027] See also Figure 1-2, a surge protector 999 is provided in one embodiment of the utility model. The surge protector 999 includes a surge protector base 998 and a surge protector module box 997. A remote signal circuit board 9981 is provided in the surge protector base 998, and a micro switch 9982 is provided on the remote signal circuit board, and the micro switch 9982 is electrically connected to an external power supply. The surge protector module box 997 can be plugged into the surge protector base 998 and abut against the micro switch. The surge protector 999 discharges current to the ground when a lightning strikes to protect the electrical appliances in the circuit. The single-pole width of the surge protector module box 997 is 9mm±0.5mm, or the single-pole width is 12mm±0.5mm, and the volume is small, which can reduce the space occupied by the installation. In this embodiment, four surge protector module boxes 997 are connected together and plugged into the surge protector base 998.

[0028] See also Figure 3 , Figure 6 and Fig. 9 The surge protector module box 997 includes a cover 100, a shell 200, an elastic recovery member 300, a varistor 400, a remote signal transmission assembly 500, a first electrical connector 600 and a second electrical connector 700. The cover 100 and the shell 200 are interlocked to accommodate the elastic recovery member 300 and the varistor 400. The first end 310 of the elastic recovery member 300 is fixedly arranged in the shell 200, and the second end 320 is connected to the varistor 400. The initial state of the elastic recovery member 300 is a stretched state. The varistor 400 is rotatably arranged in the shell 200. One end of the remote signal transmission assembly 500 is arranged in the shell 200 and abuts against the varistor 400, and the other end passes through the shell 200 to extend outward and abuts against the micro switch on the remote signal circuit board in the surge protector base 998. The first electrical connector 600 and the second electrical connector 700 are fixedly arranged on the housing 200 and are located below the varistor 400. The surge protector module box 997 is pluggably connected to the surge protector base 998 through the first electrical connector 600 and the second electrical connector 700. The first electrical connector 600 and the second electrical connector 700 are respectively connected to the varistor 400 by low-temperature soldering. The first electrical connector 600 is an electrical input terminal, and the second electrical connector 700 is an electrical output terminal. Figure 5As shown, points A and B are two low-temperature soldering points. When lightning strikes, the temperature of the varistor 400 rises. When the temperature of the varistor 400 exceeds the low-temperature soldering melting temperature threshold, the low-temperature solder melts, the first electrical connector 600 and the second electrical connector 700 are disconnected from the varistor 400, the elastic recovery member 300 is reset, driving the varistor 400 to rotate, the varistor 400 releases the contact force on the remote signal transmission assembly 500, the remote signal transmission assembly 500 is disconnected from the micro switch, and a remote signal alarm signal is issued. After receiving the alarm signal, the user can promptly handle the surge protector 999. In this embodiment, the elastic recovery member 300 is a tension spring.

[0029] See also Figure 4-6 The shell 200 is a rectangular parallelepiped structure with an opening, and is interlocked with the cover body 100. A boss 210 and a limit plate 220 are provided in the shell 200. The boss 210 extends from the inner side surface 201 of the shell 200 toward the cover body 100. The first end 310 of the elastic return member 300 is sleeved on the boss 210. The limit plate 220 extends from the inner side surface 201 of the shell 200 toward the cover body 100. The cross-sectional shape of the varistor 400 is circular. The limit plate 220 is arranged around the outer edge of the varistor 400 to limit the rotation range of the varistor 400. An indication window 230 is also provided on the upper side of the shell 200. The indication window 230 corresponds to the annular side of the body of the varistor 400. A stop plate 240 is also provided on the inner side surface 201 of the shell 200. The stopper plate 240 is used to brake the varistor 400 to limit the rotation angle of the varistor 400. The inner side surface 101 of the cover body 100 is provided with a second annular protrusion 110. The inner side surface 201 of the housing 200 is provided with a first annular protrusion 250. The two sides of the varistor 400 are respectively in contact with the first annular protrusion 250 and the second annular protrusion 110.

[0030] See also Figure 6-8, the varistor 400 is a flat cylindrical structure. The first surface 401 of the varistor 400 is provided with a first electrode sheet 410. The second surface 402 of the varistor 400 is provided with a second electrode sheet 420. Among them, the first surface 401 and the second surface 402 of the varistor 400 are opposite surfaces. The first surface 401 of the varistor 400 abuts against the second annular protrusion 110 on the cover body 100. The second surface 402 of the varistor 400 abuts against the first annular protrusion 250 on the shell 200. The first annular protrusion 250 and the second annular protrusion 110 are used to support the varistor 400 so that the varistor 400 is not directly attached to the cover body 100 and the shell 200, which is convenient for the varistor 400 to dissipate heat and also provide a rotation guide for the varistor 400. The first electrode sheet 410 is fixedly attached to the first surface 401 of the varistor 400. The first electrode sheet 410 includes a first electrode welding end 411 and a remote signal abutment end 412. The first electrode welding end 411 extends out of the varistor 400 and is electrically connected to the first electrical connector 600 by low-temperature soldering. The remote signal abutment end 412 extends out of the varistor 400 and abuts against the remote signal transmission assembly 500. The end of the remote signal abutment end 412 is bent to form a folding plate 4121. The folding plate 4121 abuts against the remote signal transmission assembly 500. The folding plate 4121 is relatively wide and can stably abut against the remote signal transmission assembly 500.

[0031] See also Figure 6-8, the second electrode sheet 420 is fixedly attached to the second surface 402 of the varistor 400. The second electrode sheet 420 includes a second electrode welding end 421. The second electrode welding end 421 extends out of the varistor 400 and is electrically connected to the second electrical connector 700 by low-temperature soldering. A hanging plate 4211 is provided on the second electrode welding end 421. Specifically, the hanging plate 4211 is a small plate that is bent and protruded toward the cover body 100 from the second electrode welding end 421. A hanging hole 4212 is provided in the center of the hanging plate 4211. The second end 320 of the elastic recovery member 300 is hung on the hanging plate 4211 through the hanging hole 4212. A degradation indicator 430 is provided on the annular side of the body of the varistor 400. After the low-temperature tin is melted, the first electrode sheet 410, the second electrode sheet 420 and the degradation indicator 430 can rotate with the varistor 400. The stop plate 240 in the housing 200 is arranged on one side of the remote signal abutment end 412. After the low-temperature tin melts, the varistor 400 rotates until the remote signal abutment end 412 hits the stop plate 240, and the varistor 400 stops rotating. At this time, the degradation indicator 430 corresponds to the indicator window 230. In this embodiment, when the surge protector module box 997 is in a normal working state, the portion corresponding to the indicator window 230 is a small portion of the annular side of the body of the varistor 400, and is coated with color A, and the degradation indicator 430 is the remaining portion of the annular side of the body of the varistor 400 coated with color B. In other embodiments, a label coated with color B can also be attached to the annular side of the body of the varistor 400 as the degradation indicator 430, and the remaining small portion is not coated with color.

[0032] After the low-temperature tin melts, the elastic recovery member 300 resets and pulls the second electrode sheet 420 to rotate the varistor 400, and the degradation indicator 430 on the varistor 400 rotates to correspond to the indication window 230, and the user can observe the current state of the surge protector module box 997 through the indication window. In this embodiment, a color different from other parts can be set on the degradation indicator 230, so that the user can determine the current state of the surge protector module box 997 by observing the color in the indication window 230. In other embodiments, other methods can also be used to achieve the indication function.

[0033] See also Figure 6-7, the remote signal transmission assembly 500 is arranged at the lower middle position of the housing 200, abutting against the external remote signal circuit, and is used to remotely feedback the change of the circuit signal to the user. In this embodiment, the external remote signal circuit is a circuit composed of the remote signal circuit board 9981 and the micro switch 9982 in the surge protector base 998. The remote signal transmission assembly 500 includes a spring 510 and a remote signal rod 520. The spring 510 is sleeved on the outside of the remote signal rod 520. A convex ring 521 is provided on the remote signal rod 520. One end of the spring 510 abuts against the convex ring 521, and the other end is compressed and abutted in the housing 200. One end of the remote signal rod 520 abuts against the remote signal abutment end 412, and the other end passes through the housing 200 and abuts against the micro switch 9982 on the remote signal circuit board 9981 in the surge protector base 998. Specifically, the remote signal rod 520 abuts against the elastic pressure plate 9983 on the micro switch 9982. When the temperature of the varistor 400 exceeds the low-temperature soldering melting temperature threshold, the spring 510 releases the compression force, the remote signal rod 520 disconnects from the micro switch 9982, and a remote signal alarm signal is issued. After receiving the alarm signal, the user can deal with the surge protector 999 in time.

[0034] See also Figure 6-7 The limit plate 220 includes a degradation indication clearance notch 221, a first electrode sheet clearance notch 222, a remote signal clearance notch 223, and a second electrode sheet clearance notch 224. The degradation indication clearance notch 221 is arranged corresponding to the indication window 230. The first electrode sheet clearance notch 222 is arranged corresponding to the first electrode welding end 411, providing a clearance space for the first electrode sheet welding end 411 to rotate with the varistor 400. The remote signal clearance notch 223 is arranged corresponding to the remote signal abutment end 412 of the first electrode sheet 410, providing a clearance space for the remote signal abutment end 412 to rotate with the varistor 400. The second electrode sheet clearance notch 224 is arranged corresponding to the second electrode welding end 421 of the second electrode sheet 420, providing a clearance space for the second electrode welding end 421 to rotate with the varistor 400. After the low-temperature tin melts, the varistor 400 rotates, and the degradation indicator 430 rotates to the position of the degradation indication notch 221. The elastic recovery member 300 pulls the hanging plate 4211 on the second electrode welding end 421 to drive the varistor 400 to rotate until the remote signal abutment end 412 abuts against the stop plate 240 in the shell 200 to limit the rotation angle of the varistor 400. At the same time, the degradation indicator 430 rotates to the position of the degradation indication notch 221, and the user observes the current status of the surge protector module box 997 through the indication window 230.

[0035] See also Figure 6-7, the first electrical connector 600 and the second electrical connector 700 are respectively arranged on both sides of the remote signal transmission assembly 500. The first electrical connector 600 is fixedly arranged on the shell 200. The first electrical connector 600 includes a first welding end 610 and a first plug-in end 620. The first welding end 610 and the first plug-in end 620 are an integral structure formed by bending. The first welding end 610 is fixedly arranged in the shell 200. The first electrode welding end 411 is connected to the first welding end 610 by low-temperature soldering. The first plug-in end 620 vertically passes through the shell 200 and extends outward, and can be plugged into the surge protector module box base 998 to achieve electrical connection with an external power supply.

[0036] See also Figure 6-7 The second electrical connector 700 includes a second welding end 710 and a second plug end 720. The second welding end 710 and the second plug end 720 are an integrated structure formed by bending. The second welding end 710 is fixedly disposed in the housing 200. The second electrode welding end 421 is connected to the second welding end 710 by low-temperature soldering. The second plug end 720 vertically passes through the housing 200 and extends outward, and can be plugged into the surge protector module box base 998 to achieve electrical connection with an external power supply.

[0037] See also Figure 6-7 , a schematic diagram of the internal structure of the surge protector module box under normal working conditions, when the circuit current is stable, the first electrical connector 600 is electrically connected to the first electrode sheet 410, the second electrical connector 700 is electrically connected to the second electrode sheet 420, the remote signal abutting end 412 of the first electrode sheet 410 on the varistor 400 abuts against one end of the remote signal rod 520 of the remote signal transmission assembly 500, the spring 520 in the remote signal transmission assembly 500 is compressed and stored, and the other end of the remote signal rod 520 abuts against the micro switch 9982 on the remote signal circuit board 9981. At this time, the degradation indicator 430 is not displayed at the indicator window 230, and the surge protector module box 997 is in normal condition.

[0038] See also Figure 9-10, a schematic diagram of the structure of the internal structure of the surge protector module box in a degraded state, when the temperature of the varistor 400 exceeds the low-temperature soldering melting temperature threshold, the first electrical connector 710 is disconnected from the first electrode sheet 410 on the varistor 400; the second electrical connector 720 is disconnected from the second electrode sheet 420 on the varistor 400, the elastic recovery member 300 pulls the varistor 400 to rotate, and the degradation indicator 430 rotates to the position corresponding to the indication window 230, indicating that the state is degraded. The user can lock the circuit degraded surge protector module box 997 by observing the indication window 230, the varistor 400 rotates, the first electrode sheet 410 on the varistor rotates with it, the remote signal abutment end 412 of the first electrode sheet 410 rotates to remove the abutment against the remote signal transmission assembly 500, the spring 510 in the remote signal transmission assembly 500 releases the stored force, the remote signal rod 520 leaves the micro switch 9982, and a remote signal alarm signal is issued, and the user can receive the alarm signal remotely.

[0039] The utility model provides a surge protector module box, which uses low-temperature soldering to fix the varistor with the first electrical connector and the second electrical connector. When the varistor heats up, the solder can be quickly melted, and the elastic recovery member drives the varistor to rotate, and the degradation indicator on the varistor rotates to a specified position for near-end indication. At the same time, the remote signal transmission component loses the contact with the varistor and pops up to disconnect the connection with the remote signal circuit, realizing the function of remotely alarming the user. The surge protector module box provided by the utility model has a sophisticated internal structure, which realizes the lightness and thinness of the surge protector module box and reduces the installation space.

[0040] Although the description and illustration of the relevant embodiments of the present invention have been given, those skilled in the art should understand that the description and illustration of these embodiments do not constitute a limitation on the scope of the present invention, and the present invention can be transformed in various forms and details without exceeding the concept and scope of the present invention. Therefore, the scope of the present invention is not limited to the above embodiments, but should be determined by the claims and the equivalents of the claims.

Claims

1. A surge protector module box, characterized in that: The surge protector module box includes a shell, a varistor, an elastic recovery member, a first electrical connector and a second electrical connector. The shell is provided with an indication window. The varistor is rotatably arranged in the shell. The varistor is provided with a degradation indicator, and the degradation indicator can rotate with the varistor. The first end of the elastic recovery member is fixedly arranged in the shell, and the second end is connected to the varistor. The first electrical connector and the second electrical connector are respectively connected to the varistor through low-temperature soldering. When the temperature of the varistor exceeds the low-temperature soldering melting temperature threshold, the first electrical connector and the second electrical connector are disconnected from the varistor, the elastic recovery member drives the varistor to rotate, and the degradation indicator on the varistor rotates to correspond to the indication window.

2. A surge protector module box as claimed in claim 1, characterized in that: The cross-sectional shape of the varistor is circular. A limiting plate is provided in the shell. The limiting plate is arranged around the outer edge of the varistor to limit the rotation range of the varistor.

3. A surge protector module box as claimed in claim 2, characterized in that: The surge protector module box also includes a remote signal transmission component, one end of which is arranged in the shell and abuts against the varistor, and the other end passes through the shell to extend outward and abuts against the external remote signal circuit.

4. A surge protector module box as claimed in claim 3, characterized in that: The varistor is provided with a first electrode sheet and a second electrode sheet, the first electrode sheet is fixedly attached to the first surface of the varistor, the first electrode sheet includes a first electrode welding end and a remote signal abutment end, the first electrode welding end extends out of the varistor and is connected to the first electrical connector by low-temperature soldering, the remote signal abutment end extends out of the varistor and abuts against the remote signal transmission component; the second electrode sheet is fixedly attached to the second surface of the varistor, the second electrode sheet includes a second electrode welding end, the second electrode welding end extends out of the varistor and is connected to the second electrical connector by the low-temperature soldering.

5. A surge protector module box as claimed in claim 4, characterized in that: A hanging plate is provided on the welding end of the second electrode, and the hanging plate is hung with the second end of the elastic recovery member, and the initial state of the elastic recovery member is a stretched state.

6. A surge protector module box as claimed in claim 5, characterized in that: The limiting plate includes a degradation indication clearance notch, a first electrode sheet clearance notch, a remote signal clearance notch, and a second electrode sheet clearance notch. The degradation indication clearance notch is arranged corresponding to the indication window, the first electrode sheet clearance notch is arranged corresponding to the first electrode welding end, the remote signal clearance notch is arranged corresponding to the remote signal abutting end of the first electrode sheet, and the second electrode sheet clearance notch is arranged corresponding to the second electrode welding end of the second electrode sheet.

7. A surge protector module box as claimed in claim 6, characterized in that: The first electrical connector is an electrical input terminal, and the second electrical connector is an electrical output terminal. The first electrical connector and the second electrical connector are respectively fixedly arranged on the shell. The first electrical connector includes a first welding terminal and a first plug-in terminal. The first welding terminal is fixedly arranged in the shell and connected to the varistor through low-temperature soldering. The first plug-in terminal extends out of the shell. The second electrical connector includes a second welding terminal and a second plug-in terminal. The second welding terminal is fixedly arranged in the shell and connected to the varistor through low-temperature soldering. The second plug-in terminal extends out of the shell.

8. A surge protector module box as claimed in claim 7, characterized in that: The remote signal transmission assembly includes a spring and a remote signal rod. The spring is sleeved on the outside of the remote signal rod. The remote signal rod is provided with a convex ring. One end of the spring abuts against the convex ring, and the other end abuts against the inside of the shell. One end of the remote signal rod abuts against the remote signal abutting end, and the other end abuts against the external remote signal circuit.

9. A surge protector module box as claimed in claim 8, characterized in that: A stop plate, a boss and a first annular protrusion are also provided in the shell. The stop plate is located on one side of the remote signal abutting end of the first electrode sheet. The first end of the elastic return member is sleeved on the boss. The first annular protrusion is provided on the inner side surface of the shell and abuts against the second side of the varistor. The surge protector module box also includes a cover body, which is buckled with the shell to accommodate the varistor and the elastic return member. A second annular protrusion is provided on the inner side surface of the cover body, and the second annular protrusion abuts against the first side of the varistor.

10. A surge protector, characterized in that: The surge protector includes a surge protector base and a surge protector module box as described in any one of claims 1 to 9, a remote signaling circuit is provided in the surge protector base, a micro switch is provided on the remote signaling circuit, the surge protector module box is pluggably connected to the surge protector base through the first electrical connector and the second electrical connector, and the remote signaling transmission assembly of the surge protector module box abuts against the micro switch.

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