CN221994825U - Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug - Google Patents
Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug Download PDFInfo
- Publication number
- CN221994825U CN221994825U CN202422436969.5U CN202422436969U CN221994825U CN 221994825 U CN221994825 U CN 221994825U CN 202422436969 U CN202422436969 U CN 202422436969U CN 221994825 U CN221994825 U CN 221994825U
- Authority
- CN
- China
- Prior art keywords
- plug
- driving rod
- gfci
- power
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 239000010949 copper Substances 0.000 claims description 31
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Breakers (AREA)
Abstract
本实用新型公开了一种大功率GFCI智能漏电保护插头的脱扣复位装置，包括线圈和驱动杆，所述线圈输入电流带动驱动杆动作，使得动触点与静触点连通或断开，还包括永磁组件，所述永磁组件的位置使得当动触点和静触点连通时永磁组件与驱动杆磁吸并保持。本实用新型的一种大功率GFCI智能漏电保护插头的脱扣复位装置，利用线圈通电驱动杆产生电磁力带动动触点与静触点闭合，驱动杆与磁铁块接触，线圈断电后，在磁铁块驱动杆之间的磁力作用下保持闭合，当漏电检测装置检测漏电时，控制电路控制线圈通入反向电流，动、静触点分离。本实用新型还公开了一种包括上述脱扣复位装置的插头。
The utility model discloses a tripping and resetting device for a high-power GFCI intelligent leakage protection plug, including a coil and a driving rod, wherein the coil inputs current to drive the driving rod to move, so that the moving contact is connected or disconnected with the static contact, and also includes a permanent magnet component, wherein the position of the permanent magnet component makes the permanent magnet component and the driving rod magnetically attracted and held when the moving contact is connected with the static contact. The utility model discloses a tripping and resetting device for a high-power GFCI intelligent leakage protection plug, wherein the driving rod generates electromagnetic force when the coil is energized to drive the moving contact and the static contact to close, and the driving rod contacts the magnet block, and after the coil is powered off, the coil remains closed under the magnetic force between the magnet block and the driving rod, and when the leakage detection device detects leakage, the control circuit controls the coil to pass a reverse current, and the moving and static contacts are separated. The utility model also discloses a plug including the above-mentioned tripping and resetting device.
Description
Technical Field
The utility model relates to a tripping resetting device of a high-power GFCI intelligent leakage protection plug, and also relates to a plug comprising the tripping resetting device.
Background
The intelligent leakage protection plug for high-power GFCI is one with leakage protection function for high-power electric appliances in North America market, and is one common high-power electric appliance, such as electric water heater. The existing low-voltage leakage protection plug adopts the principle that a current sensor is used for detecting the current flowing through the plug, and when the leakage is detected, the plug is tripped in an electromagnetic mode, so that the personal safety of a user is protected. After tripping, the coil needs to be continuously electrified or is additionally maintained by adopting a locking structure when the electromagnetic resetting is adopted, and after the unlocking mechanism is driven by another electromagnetic coil to unlock through ingenious design, the tripping outage is realized.
Disclosure of utility model
Aiming at the defects, the utility model aims to provide the GFCI intelligent leakage protection plug with a simple and reliable structure.
The tripping resetting device of the high-power GFCI intelligent leakage protection plug comprises a coil, a driving rod and a permanent magnet component, wherein the coil inputs current to drive the driving rod to act so that a movable contact is communicated with or disconnected from a fixed contact, and the tripping resetting device also comprises the permanent magnet component, and the permanent magnet component is magnetically attracted and kept with the driving rod when the movable contact is communicated with the fixed contact.
Further, the first end of the driving rod is connected with the movable support, a movable contact is arranged on the movable support, the permanent magnet assembly is matched with the end part of the second end of the driving rod, the driving rod acts far away from or close to the permanent magnet assembly, and the position of the stationary contact is such that the stationary contact is contacted with the movable contact when the second end of the driving rod and the permanent magnet assembly produce magnetic attraction.
Further, set up the spacing groove on the movable support, the stopper card is gone into in the spacing groove, and the stopper middle part is equipped with the hole, the first end of actuating lever stretches into in the hole of stopper, and the first end of actuating lever is equipped with recess and stopper joint.
Further, including the fixed bolster, the fixed bolster includes the coil bobbin, is equipped with the coil in the coil bobbin, coil bobbin and coil coaxial sleeve are on the actuating lever, permanent magnet assembly's mounting groove is connected to the one end of coil bobbin, set up circular slice permanent magnet in the mounting groove, still include a tailstock, the permanent magnet is fixed with the mounting groove cooperation to the tailstock.
Further, the other end of coil bobbin is connected with the stationary contact fixed plate, and the upper end of stationary contact fixed plate is connected with the support frame, and the support frame sets up card foot and PCB circuit board joint on the support frame, set up the spout on the support frame, the upper end of stopper is equipped with outside extension, the extension extends to the surface of spout, makes movable support slides along the spout.
The utility model further comprises a high-power GFCI intelligent leakage protection plug, the tripping resetting device, the leakage detection device and the PCB, wherein when the leakage detection device detects leakage, the tripping resetting device acts to disconnect a circuit.
Further, still include plug fixing base, the fixed support frame is in the plug fixing base, the plug fixing base includes the spacing of plug subassembly of both sides, is equipped with the clearance in spacing and the plug fixing base body and supplies plug copper subassembly to pass, and the lower surface at the plug fixing base is fixed to the pin and is connected in plug copper subassembly, and plug copper subassembly is buckled at the lower surface of plug fixing base and is extended to the side of plug fixing base to extend to the stationary contact fixed plate on the stationary contact fixed plate from the clearance and form the stationary contact, fixed stationary contact on the stationary contact.
Further, the electric leakage detection device comprises a current transformer, the movable contact is connected with a wiring copper component, the wiring copper component comprises a wiring terminal, the wiring terminal is connected with a connecting copper sheet, and the connecting copper sheet connected with a zero line and a live line penetrates through the current transformer.
Furthermore, the middle part of the current transformer is separated by a separator to connect a connecting copper sheet of the live wire and the zero wire.
Further, the electric leakage detection device further comprises a test key and a reset key, wherein the test key and the reset key are installed on the shell, the shell is fixed with the base, the electric leakage detection device, the PCB and the tripping reset device are installed in the containing cavity of the shell and the base, and the middle frame is connected between the base and the shell.
The beneficial technical effects of the utility model are as follows:
the utility model relates to a tripping resetting device of a high-power GFCI intelligent leakage protection plug, which comprises a coil, wherein a coil is electrified to a driving rod to generate electromagnetic force to drive a movable contact to be closed with a fixed contact, a second end of the driving rod is contacted with a magnet, and the coil is kept closed under the action of magnetic force between the magnet and the driving rod after the coil is powered off. When the leakage detection device detects leakage, the control circuit controls the coil to be electrified with reverse current, the driving rod moves reversely under the action of electromagnetic force, and the movable contact and the fixed contact are separated.
In a specific embodiment of the utility model, the driving rod is arranged in the fixed support, one end of the driving rod is connected with the movable support, the movable support is connected with the first end of the driving rod through a limiting block, and the upper end of the limiting block is provided with an extension section matched with a sliding groove of the support frame on the fixed support, so that the movable support can stably move.
The utility model also comprises a high-power GFCI intelligent leakage protection plug with the tripping resetting device, the structure is simple and compact, and the coil and the driving rod realize tripping and resetting simultaneously.
Drawings
Fig. 1 is a schematic diagram of a specific embodiment of a high power GFCI intelligent leakage protection plug;
FIG. 2 is a schematic top view of the internal structure of the plug;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the drive rod, movable bracket and terminals;
FIG. 5 is a schematic view of a stationary bracket;
FIG. 6 is a top view of the stationary bracket;
FIG. 7 is a schematic cross-sectional view of FIG. 6;
Fig. 8 is a schematic view of the fixed bracket combined with the movable bracket and the driving rod.
Reference numerals illustrate: 1. a housing; 101. a housing; 102. a middle frame; 103. a base; 2. a PCB circuit board; 3. a trip reset device; 301. a driving rod; 3011. a first end; 3012. a second end; 302. a fixed bracket; 3021. a coil bobbin; 303. a movable bracket; 3031. a limit groove; 3032. a limiting block; 3033. an extension section; 304. a movable contact; 305. a mounting groove; 306. a tailstock; 307. a stationary contact fixing plate; 308. a support frame; 3081. a chute; 309. a stationary contact; 4. an electric leakage detection device; 401. a partition plate; 5. a clamping foot; 6. a plug fixing seat; 601. a limit bar; 7. a plug copper assembly; 8. a wiring copper assembly; 801. a terminal; 802. connecting copper sheets; 9. testing keys; 10. resetting a key; 11. pins.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 to 8, the high-power GFCI intelligent leakage protection plug of the present utility model includes a leakage detection device 4, a trip reset device 3 and a PCB circuit board 2, when the leakage detection device 4 detects a leakage, the trip reset device 3 acts to disconnect a circuit, the trip reset device 3 includes a coil and a driving rod 301, the driving rod 301 is driven to act by inputting current to the coil, so that a movable contact is connected or disconnected with a stationary contact, and the high-power GFCI intelligent leakage protection plug further includes a permanent magnet assembly, wherein the permanent magnet assembly is positioned so that the permanent magnet assembly magnetically attracts and holds the driving rod 301 when the movable contact is connected with the stationary contact. The common leakage detection device 4 adopts a zero sequence current transformer, and comprises a coil, wherein a live wire and a zero line penetrate through the coil, when leakage occurs, the current on the live wire and the zero line can be different, the current transformer can detect the current difference on the live wire and the zero line, and a control component integrated on the PCB circuit board 2 can receive a leakage signal and control the tripping reset device 3 to disconnect a circuit. The trip reset device 3 comprises a coil and a coaxially arranged metal driving rod 301, when current is supplied to the coil, the driving rod 301 moves under the action of electromagnetic force and brings a movable contact into contact with a static contact, and a circuit of the plug is completed. Meanwhile, the driving rod 301 is in contact with a permanent magnet assembly, the permanent magnet assembly adopts a magnet block, and the magnetic attraction force of the permanent magnet assembly acts on the driving rod 301, so that the movable contact and the stationary contact are kept in contact. Under the action of the permanent magnet assembly, the coil can keep the switch closed without maintaining the power supply or using other locking devices. The leakage detection device 4, the tripping resetting device 3 and the PCB circuit board 2 are arranged in the cavity of the plug housing 1, the housing 1 comprises a housing 101 at the upper part and a base 103 at the lower part, the base 103 and the housing 101 are connected with a middle frame 102, the housing 1 is made of plastic, the middle frame 102 is made of metal materials to play a supporting role, the base 103, the housing 101 and the middle frame 102 are fixed by bolts, a wire stretches into and is connected to a wiring terminal 801 of the wiring copper assembly 8 from the tail part of the housing 101, the wiring terminal 801 is respectively connected with a zero line, a live line or a ground line, the wiring terminal 801 is connected with a movable contact, the fixed contact is connected with a pin 11, the pin 11 is arranged below a driving assembly, and the overall structure of the plug is compact.
The trip reset device 3 is structured as shown with reference to fig. 2 to 8, and mainly includes a drive lever 301 and a fixed bracket 302, the fixed bracket 302 includes a coil pipe 3021, a coil is provided in the coil pipe 3021, a shaft portion of the drive lever 301 is provided in the coil pipe 3021, and the coil pipe and the drive lever are coaxially arranged in this embodiment. The first end 3011 of the driving rod 301 is connected with the movable support 303, specifically, the movable support 303 comprises a longitudinal plate, a longitudinally arranged limit groove 3031 is formed in the middle of the movable support 303, the limit groove 3031 is a dovetail groove, a limit block 3032 matched with the limit groove is clamped in the dovetail groove, the limit block 3032 is clamped with the first end 3011 of the driving rod, a hole is formed in the position, matched with the first end 3011, of the limit block 3032 of the driving rod, the first end 3011 of the driving rod is of a stepped rod structure, a groove is formed in the first end 3011, the first end 3011 extends into the hole, and the driving rod can be fixed by nuts. The connection copper sheet 802 of the wiring copper component 8 passes through the current transformer, sheet copper components are arranged at two ends of a longitudinal plate of the movable support 303 to form a movable contact 304, a movable contact can be fixed on the movable contact 304, the movable contact 304 and the wiring copper component 8 can be connected through a wire, and the wire is reserved for a certain length to adapt to the movement of the movable support 303. Preferably, one end of the coil pipe 3021 of the fixing support is connected with the mounting groove 305 of the permanent magnet assembly, the surface of the second end 3012 of the driving rod is matched with the permanent magnet assembly, the mounting groove 305 can be arranged in a column body, the mounting groove 305 is cylindrical, the mounting groove 305 is communicated with the coil pipe 3021, a circular magnet block is arranged in the mounting groove 305, a tail part of the mounting groove 305 can be provided with a tail seat 306 which is detachably connected, and the tail seat 306 and the mounting groove 305 are matched with the fixed magnet block. Preferably, the other end of the coil pipe 3021 of the fixed bracket is connected with a fixed contact fixing plate 307, the movable bracket 303 is arranged outside the fixed contact fixing plate 307, the driving rod 301 passes through the fixed contact fixing plate 307, the fixed contact is arranged on the fixed contact fixing plate, and the upper end of the fixed contact fixing plate 307 is connected with a supporting frame 308. The movable bracket 303 of the present embodiment is disposed on the first end of the driving rod 301, the fulcrum of the moment is at one end of the coil pipe 3021, during the movement, one end of the movable bracket 303 is affected by the moment to droop, and the supporting frame 308 may be used to provide a supporting force to support the movable bracket 303 to move along a predetermined path. Specifically, the two sides of the stationary contact fixed plate 307 are provided with a supporting frame 308, the supporting frame 308 is arranged above the movable support 303, the supporting frame 308 is provided with a clamping pin 5 and a PCB circuit board 2 in clamping connection, a space is reserved between the supporting frames 308 on two sides, the width of the reserved space is matched with the width of the upper portion of a limiting block 3032 of the movable support 303, an extension section 3033 is arranged on the upper portion of the limiting block 3032 outwards, a sliding groove 3081 is formed in the supporting frame 308, and the sliding groove 3081 is matched with the extension section 3033, so that the movable support 303 can stably move along the sliding groove 3081. In this embodiment, when the leakage detecting device 4 detects leakage, the coil in the fixed bracket 302 inputs a reverse current, the driving rod 301 is separated from the magnet block by the reverse electromagnetic force, and the driving rod 301 drives the movable bracket 303, so that the movable contact and the stationary contact are separated. When the movable bracket 303 moves to the vicinity of the leakage detecting device 4 adjacent thereto, the second end 3012 of the driving lever 301 is kept at a long distance from the permanent magnet assembly, the magnetic attraction force of which is negligible, and the movable contact and the stationary contact are kept in a separated state.
In the above embodiment, referring to fig. 2 and 4, the plug fixing seat 6 is further included, the fixing bracket 302 is disposed in the plug fixing seat 6, the plug fixing seat 6 includes plug component limiting strips 601 on two sides, gaps are disposed in the limiting strips 601 and the plug fixing seat body for the plug copper components 7 to pass through, the plug copper components are connected with the pins 11, the pins 11 are fixed on the lower surface of the plug fixing seat 6, the plug copper components extend from the lower surface of the plug fixing seat 6 to the side surface of the plug fixing seat 6, and extend from the gaps to the stationary contact fixing plate 307 to form the stationary contact 309, and the stationary contact is fixed on the stationary contact 309.
In the above embodiment, as shown with reference to fig. 2, the current transformer is further included, the movable contact is connected with the wiring terminal 801 copper component, the wiring terminal 8 includes the wiring terminal 801, the wiring terminal 801 is connected with the connection copper sheet 802, the connection copper sheet 802 connected with the neutral wire and the live wire passes through the current transformer, and the middle part of the current transformer separates the connection copper sheet 802 connected with the live wire and the neutral wire by the partition 401.
In the above embodiment, referring to fig. 1, the device further includes a test key 9 and a reset key, where the test key 9 and the reset key are mounted on the housing 101, and the test key 9 and the reset key 10 may be configured according to the prior art.
The present utility model is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present utility model can be embodied in the form of a program for carrying out the method of the present utility model, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present utility model fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a tripping resetting means of high-power GFCI intelligence electric leakage protection plug which characterized in that: the permanent magnet assembly is positioned so that the permanent magnet assembly and the driving rod magnetically attract and keep when the movable contact and the fixed contact are communicated.
2. The trip reset device of the high-power GFCI intelligent leakage protection plug according to claim 1, wherein: the first end of the driving rod is connected with the movable support, the movable support is provided with a movable contact, the permanent magnet assembly is matched with the end part of the second end of the driving rod, the driving rod acts far away from or near to the permanent magnet assembly, and the position of the stationary contact is such that the stationary contact is contacted with the movable contact when the second end of the driving rod and the permanent magnet assembly produce magnetic attraction.
3. The trip reset device of the high-power GFCI intelligent leakage protection plug according to claim 2, wherein: the movable support is provided with a limiting groove, the limiting block is clamped into the limiting groove, a hole is formed in the middle of the limiting block, the first end of the driving rod stretches into the hole of the limiting block, and the first end of the driving rod is provided with a groove and the limiting block in a clamping mode.
4. The trip reset device of the high-power GFCI intelligent leakage protection plug as set forth in claim 3, wherein: including the fixed bolster, the fixed bolster includes the coil bobbin, is equipped with the coil in the coil bobbin, coil bobbin and coil coaxial sleeve are on the actuating lever, permanent magnet assembly's mounting groove is connected to the one end of coil bobbin, set up circular slice permanent magnet in the mounting groove, still include a tailstock, the permanent magnet is fixed with the mounting groove cooperation to the tailstock.
5. The trip reset device of the high-power GFCI intelligent leakage protection plug as set forth in claim 4, wherein: the coil bobbin comprises a coil bobbin body, wherein the other end of the coil bobbin body is connected with a fixed contact fixed plate, the upper end of the fixed contact fixed plate is connected with a support frame, the support frame is arranged above a movable support, a clamping pin and a PCB circuit board are arranged on the support frame in a clamping mode, a sliding groove is formed in the support frame, an outward extending section is arranged at the upper end of the limiting block, and the extending section extends to the surface of the sliding groove so that the movable support can slide along the sliding groove.
6. A high power GFCI intelligent leakage protection plug comprising the trip reset device of any one of claims 1 to 5, characterized in that: the electric leakage detection device detects electric leakage, and the tripping resetting device acts to disconnect the circuit.
7. The high-power GFCI intelligent leakage protection plug of claim 6, wherein: still include the plug fixing base, fixed bolster is in the plug fixing base, the plug fixing base includes the spacing of plug subassembly of both sides, is equipped with the clearance in spacing and the plug fixing base body and supplies plug copper subassembly to pass, and the lower surface at the plug fixing base is fixed to the pin and is connected in plug copper subassembly, and plug copper subassembly is buckled at the lower surface of plug fixing base and is extended to the side of plug fixing base to extend to the stationary contact fixed plate on the stationary contact from the clearance and form the stationary contact, fixed stationary contact on the stationary contact.
8. The high-power GFCI intelligent leakage protection plug of claim 7, wherein: the electric leakage detection device comprises a current transformer, the movable contact is connected with a wiring copper component, the wiring copper component comprises a wiring terminal, the wiring terminal is connected with a connecting copper sheet, and the connecting copper sheet connected with a zero line and a live line penetrates through the current transformer.
9. The high-power GFCI intelligent leakage protection plug of claim 8, wherein: and the middle part of the current transformer is separated by a separator to connect a connecting copper sheet of the live wire and the zero line.
10. The high-power GFCI intelligent leakage protection plug of claim 7, wherein: the electric leakage detection device, the PCB circuit board and the tripping resetting device are arranged in the cavity of the shell and the base, and a middle frame is connected between the base and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422436969.5U CN221994825U (en) | 2024-10-10 | 2024-10-10 | Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422436969.5U CN221994825U (en) | 2024-10-10 | 2024-10-10 | Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221994825U true CN221994825U (en) | 2024-11-12 |
Family
ID=93371360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422436969.5U Active CN221994825U (en) | 2024-10-10 | 2024-10-10 | Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221994825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118920202A (en) * | 2024-10-10 | 2024-11-08 | 浙江铭美智能科技有限公司 | High-power GFCI intelligent leakage protection plug |
-
2024
- 2024-10-10 CN CN202422436969.5U patent/CN221994825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118920202A (en) * | 2024-10-10 | 2024-11-08 | 浙江铭美智能科技有限公司 | High-power GFCI intelligent leakage protection plug |
| CN118920202B (en) * | 2024-10-10 | 2024-12-27 | 浙江铭美智能科技有限公司 | A high-power GFCI intelligent leakage protection plug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN221994825U (en) | Tripping resetting device of high-power GFCI intelligent leakage protection plug and plug | |
| US7701680B2 (en) | Ground-fault circuit interrupter | |
| EP2608241B1 (en) | Auxiliary contact mechanism for magnetic contactor | |
| US7195500B2 (en) | Ground fault circuit interrupter with end of life indicators | |
| US20060238933A1 (en) | Ground fault circuit interrupters providing end of the life test | |
| CA2761270C (en) | Electricity meter contact arrangement | |
| US5563756A (en) | Resettable ground fault circuit interrupter | |
| CN110033995B (en) | A high voltage DC relay capable of detecting the operating state of the main contact | |
| CN102971821A (en) | Overload relay switch without springs | |
| CN209388963U (en) | Relay | |
| CN118920202B (en) | A high-power GFCI intelligent leakage protection plug | |
| CN102610450A (en) | Socket-type grounded faulty line breaker | |
| CN206312831U (en) | Auxiliary Contact Device of HVDC Relay | |
| CN210628227U (en) | Modular earth leakage protection circuit breaker | |
| CN109427509B (en) | Relay with a movable contact | |
| CN218498512U (en) | High-safety leakage protection socket | |
| CN111564736B (en) | Leakage protection plug | |
| CN212209922U (en) | Novel leakage protection plug | |
| CN209343998U (en) | A kind of bistable relay for DC power supply management | |
| CN116087746A (en) | A circuit board withstand voltage test fixture | |
| CN219800750U (en) | Auxiliary contact group for contactor | |
| CN201478225U (en) | Assistant type earth fault circuit breaker | |
| WO2018166352A1 (en) | Relay | |
| CN204230169U (en) | Electromagnetic relay | |
| CN214956562U (en) | Energy-saving high-voltage direct-current magnetic latching relay switch device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |