CN102136401A - Miniature circuit breaker with leakage protection function - Google Patents
Miniature circuit breaker with leakage protection function Download PDFInfo
- Publication number
- CN102136401A CN102136401A CN2011100732491A CN201110073249A CN102136401A CN 102136401 A CN102136401 A CN 102136401A CN 2011100732491 A CN2011100732491 A CN 2011100732491A CN 201110073249 A CN201110073249 A CN 201110073249A CN 102136401 A CN102136401 A CN 102136401A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- miniature circuit
- lever
- earth leakage
- leakage protective
- 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.)
- Granted
Links
Images
Landscapes
- Breakers (AREA)
Abstract
The invention provides a miniature circuit breaker with leakage protection function, mainly solving the problem that the existing miniature circuit breakers with leakage protection function have complex structures, are inconvenient to assemble and easily cause leakage without tripping or misoperation. The miniature circuit breaker is characterized in that a lever (5) is hinged in a leakage protector shell (2); a button (6) is arranged in the leakage protector shell (2); one end of the lever (5) corresponds to an iron core (4) and the other end of the lever (5) is provided with a clamp block (7); the button (6) is provided with a clamp groove (8); the clamp block (7) can be clamped in the clamp groove (8); a torsion spring (9) is arranged on the hinged shaft of the lever (5); the button (6) is provided with a spring ensuring the button (6) to upspring; the lever (5) corresponds to one end of a connecting shaft (10); and the other end of the connecting shaft (10) passes through a miniature circuit breaker shell (1) and is connected with a latch. The miniature circuit breaker has the characteristics of simple structure, low cost, safety, reliability and convenience in assembly.
Description
Technical field
The present invention relates to a kind of miniature circuit breaker, be specifically related to a kind of earth leakage protective miniature circuit breaker of being with.
Background technology
Miniature circuit breaker is meant and exchanges the low-voltage circuit breaker that uses on 50/60Hz rated voltage 230/400V, the following circuit of rated current 63A, is usually used in places such as industry, commerce, high level and residential houses.The miniature circuit breaker general according to user's needs all has creepage protection function; there is a kind of housing side of miniature circuit breaker to be connected with the earth leakage protective device housing; electric leakage dropout driver is installed in the earth leakage protective device housing; the electric leakage snap close; electric leakage tripping and the link gear that is connected with the miniature circuit breaker handle; the electric leakage tripping links to each other with an end of connecting axle; the housing that the other end of connecting axle passes miniature circuit breaker links to each other with the snap close of miniature circuit breaker; zero-sequence transformer produces induced current during electric leakage; after amplifying, the function element on the circuit board orders about the action of electric leakage dropout driver; iron core in the electric leakage dropout driver promotes the electric leakage snap close and breaks away from the electric leakage tripping; the electric leakage tripping is moved and is broken away from by the snap close of connecting axle drive miniature circuit breaker and the tripping of miniature circuit breaker, makes miniature circuit breaker realize the electric leakage dropout.Driving described link gear by handle when miniature circuit breaker is closed resets electric leakage snap close and electric leakage tripping.There is following defective in this miniature circuit breaker with creepage protection function: 1, parts are many, complex structure, and the cost height is not easy to assembling, is prone to fault in use, electric leakage occurs and does not thread off or the misoperation phenomenon.2, the lead-out terminal of output is installed in the terminal base of integrative-structure, and lead-out terminal does not have spacing, and lead-out terminal is play in terminal base, poor stability.3, the terminal base owing to output is connected on the housing and earth leakage protective device housing of miniature circuit breaker; make whole shell sizes elongated; therefore movable clamp also needs lengthening; but be subjected to the restriction of draw-in groove length; movable clamp must just can be packed into when mounted in bending; movable clamp pliability is poor, fractures easily.
Summary of the invention
In order to overcome disadvantages of background technology; the invention provides a kind of earth leakage protective miniature circuit breaker of being with; this has mainly solved existing miniature circuit breaker complex structure with creepage protection function, is not easy to assemble and easily caused electric leakage not thread off or the problem of misoperation with earth leakage protective miniature circuit breaker; also solved simultaneously the easy play of lead-out terminal of output; the problem of poor stability and clamp frangibility has characteristics simple in structure, that cost is low, safe and reliable and easy to assembly.
Technical scheme of the present invention is: this is with earth leakage protective miniature circuit breaker to comprise miniature circuit breaker housing and earth leakage protective device housing, be provided with the snap close of locking tripping in the miniature circuit breaker housing, snap close and tripping break away from can make miniature circuit breaker thread off, be provided with electric leakage dropout driver in the earth leakage protective device housing, be provided with iron core in the electric leakage dropout driver, be hinged with lever in the earth leakage protective device housing, be provided with the termination in the earth leakage protective device housing and expose outside button, one end of lever is corresponding with iron core, the other end of lever is provided with fixture block, button is provided with draw-in groove, described fixture block is corresponding with draw-in groove and can snap in the described draw-in groove, the jointed shaft of lever is provided with and makes lever block the torsion spring of trend mutually with button, is provided with the spring that button is upspring in the button; Lever links to each other with an end of connecting axle, and the other end of connecting axle passes the miniature circuit breaker housing and links to each other with snap close.
Describedly be with earth leakage protective miniature circuit breaker; also include lead-out terminal; described lead-out terminal is installed in the terminal base; terminal base is made up of upper end stroma and lower end stroma; upper end stroma and the clamping mutually of lower end stroma; the lower end stroma is provided with slot, and the upper end stroma is provided with plate, and the connecting plate of lead-out terminal is positioned at the slot of lower end stroma and is compressed by the plate on the stroma of upper end.
Described upper end stroma is provided with grab and location hole, and the lower end stroma is provided with and grab and corresponding groove of location hole and reference column.
The lower surface of described miniature circuit breaker housing and earth leakage protective device housing is provided with movable clamp, and movable clamp comprises operating side, working end and plate body, and described plate body above and below all is recessed to the plate face, and plate body is provided with penetrating bar hole and gusset.
Described lever is provided with side plate, and described side plate is corresponding with connecting axle.
Describedly be with earth leakage protective miniature circuit breaker; also include test button; being provided with the elasticity bending in the earth leakage protective device housing reaches and the corresponding contact chip of elasticity bending; elasticity bending and contact chip are electrically connected in the leak(age) test circuit, and stretch out outside the earth leakage protective device housing test button and its termination corresponding with the elasticity bending.
The present invention has following beneficial effect: owing to take such scheme, during electric leakage, electric leakage dropout driver orders about iron core and stretches out, iron core promotes lever rotates lever, and lever and button break away from the snap close and the tripping that promote simultaneously in the connecting axle drive miniature circuit breaker housing and throw off, and realize miniature circuit breaker electric leakage dropout, this moment the button locking lever, lever makes connecting axle not have free movable space, and snap close and tripping in the miniature circuit breaker can not lock, and the miniature circuit breaker handle can not be closed; When resetting, connect knob down, lever blocks mutually with button under the effect of torsion spring, and connecting axle has free movable space, reset under the effect that latches in back-moving spring own in the miniature circuit breaker and with the tripping locking, the miniature circuit breaker handle can be closed.Compare with background technology, removed complicated loaded down with trivial details transmission mechanism, simple in structure, easy to assembly, safe and reliable, cost is low.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is stereogram exploded views of terminal base 12 among Fig. 1.
Accompanying drawing 3 is structural representations of upper end stroma 13 among Fig. 2.
Accompanying drawing 4 is mounting structure schematic diagrames of movable clamp 21 among Fig. 1.
Accompanying drawing 5 is structural representations of movable clamp 21 among Fig. 1 and Fig. 4.
Accompanying drawing 6 is that the position of lever 5 and connecting axle 10 concerns schematic diagram among Fig. 1.
Accompanying drawing 7 is structural representations of lever 5 among Fig. 1.
1-miniature circuit breaker housing among the figure, 2-earth leakage protective device housing, 3-electric leakage dropout driver, 4-iron core; the 5-lever, 6-button, 7-fixture block; the 8-draw-in groove, 9-torsion spring, 10-connecting axle; the 11-lead-out terminal, 12-terminal base, 13-upper end stroma; 14-lower end stroma, 15-slot, 16-plate; the 17-grab, 18-location hole, 19-groove; the 20-reference column, the movable clamp of 21-, 22-operating side; the 23-working end, 24-plate body, 25-bar hole; the 26-gusset, 27-test button, 28-elasticity bending; the 29-contact chip, 30-connecting plate, 31-side plate.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with Fig. 2-shown in Figure 7, this is with earth leakage protective miniature circuit breaker to comprise miniature circuit breaker housing 1 and earth leakage protective device housing 2, be provided with the snap close of locking tripping in the miniature circuit breaker housing 1, snap close and tripping break away from can make miniature circuit breaker thread off, be provided with electric leakage dropout driver 3 in the earth leakage protective device housing 2, be provided with iron core 4 in the electric leakage dropout driver 3, be hinged with lever 5 in the earth leakage protective device housing 2, be provided with the termination in the earth leakage protective device housing 2 and expose outside button 6, one end of lever 5 is corresponding with iron core 4, the other end of lever 5 is provided with fixture block 7, button 6 is provided with draw-in groove 8, described fixture block 7 and draw-in groove 8 are corresponding and can snap in the described draw-in groove 8, and the jointed shaft of lever 5 is provided with and makes lever 5 and button 6 block the torsion spring 9 of trend mutually, is provided with the spring that button 6 is upspring in the button 6; Lever 5 is corresponding with an end of connecting axle 10.The other end of connecting axle 10 passes miniature circuit breaker housing 1 and links to each other with snap close.During electric leakage, electric leakage dropout driver 3 orders about iron core 4 and stretches out, iron core 4 promotes lever 5 rotates lever 5, lever 5 breaks away from the snap close and the tripping that promote simultaneously in the connecting axle 10 drive miniature circuit breaker housings 1 with button 6 and throws off, realize that the miniature circuit breaker electric leakage threads off, this moment button 6 locking levers 5, lever 5 makes connecting axle 10 not have free movable space, snap close and tripping in the miniature circuit breaker can not lock, and the miniature circuit breaker handle can not be closed; When resetting, connect knob down 6, lever 5 blocks mutually with button 6 under the effect of torsion spring 9, connecting axle 10 has free movable space, reset under the effect that latches in back-moving spring own in the miniature circuit breaker and with the tripping locking, the miniature circuit breaker handle can be closed, enters normal operating condition.Compare with background technology, removed complicated loaded down with trivial details transmission mechanism, simple in structure, easy to assembly, safe and reliable, cost is low.
By Fig. 2 in conjunction with shown in Figure 3; describedly be with earth leakage protective miniature circuit breaker; also include lead-out terminal 11; described lead-out terminal 11 is installed in the terminal base 12; terminal base 12 is made up of upper end stroma 13 and lower end stroma 14, upper end stroma 13 and lower end stroma 14 clamping mutually, and lower end stroma 14 is provided with slot 15; upper end stroma 13 is provided with plate 16, and the connecting plate 30 of lead-out terminal 11 is positioned at the slot 15 of lower end stroma 14 and is compressed by the plate on the upper end stroma 13 16.Upper end stroma 13 plays spacing and the fixedly effect of lead-out terminal 11, lead-out terminal 11 play not in terminal base 12, and good stability is electrically connected safe.
In conjunction with shown in Figure 3, described upper end stroma 13 is provided with grab 17 and location hole 18 by Fig. 2, and lower end stroma 14 is provided with and grab 17 and location hole 18 corresponding groove 19 and reference columns 20.During installation, reference column 20 is inserted in the location hole 18, plays the role of positioning, and grab 17 snaps onto in the groove 19, plays interconnect function, and is easy to assembly.
By Fig. 4 in conjunction with shown in Figure 5; the lower surface of described miniature circuit breaker housing 1 and earth leakage protective device housing 2 is provided with movable clamp 21; movable clamp 21 comprises operating side 22, working end 23 and plate body 24; described plate body 24 above and below all are recessed to the plate face, and plate body 24 is provided with penetrating bar hole 25 and gusset 26.During assembling activity clamp 21; the mounting groove one side insertion activity clamp 21 of the lower end of miniature circuit breaker housing 1 and earth leakage protective device housing 2, because that plate body 24 has is flexible preferably, frangibility not; plate body 24 bendings in the movable clamp 21 activity clamp 21 of can packing into, assembling easily.
In conjunction with shown in Figure 7, lever 5 is provided with side plate 31 by Fig. 6, and described side plate 31 is corresponding with connecting axle 10.During electric leakage, iron core 4 promotes lever 5 and rotates, and the side plate 31 on the lever 5 can promote connecting axle 10 and slide, and makes the snap close in the miniature circuit breaker be in the position that breaks away from tripping; Press the button 6, lever 5 resets earlier, and the snap close in the miniature circuit breaker resets then, enters normal condition.
By Fig. 4 in conjunction with shown in Figure 5; describedly be with earth leakage protective miniature circuit breaker; also include test button 27; being provided with elasticity bending 28 in the earth leakage protective device housing 2 reaches and elasticity bending 28 corresponding contact chips 29; elasticity bending 28 is electrically connected in the leak(age) test circuit with contact chip 29, and stretch out outside earth leakage protective device housing 2 corresponding and its termination of test button 27 and elasticity bending 28.Adopt single elasticity bending 28 and contact chip 29, the complexity of having simplified prior art connects, and is simple in structure, is convenient to processing and assembling.
Claims (6)
1. be with earth leakage protective miniature circuit breaker for one kind, comprise miniature circuit breaker housing (1) and earth leakage protective device housing (2), be provided with the snap close of locking tripping in the miniature circuit breaker housing (1), snap close and tripping break away from can make miniature circuit breaker thread off, be provided with electric leakage dropout driver (3) in the earth leakage protective device housing (2), be provided with iron core (4) in the electric leakage dropout driver (3), it is characterized in that: be hinged with lever (5) in the earth leakage protective device housing (2), be provided with the termination in the earth leakage protective device housing (2) and expose outside button (6), one end of lever (5) is corresponding with iron core (4), the other end of lever (5) is provided with fixture block (7), button (6) is provided with draw-in groove (8), described fixture block (7) is corresponding with draw-in groove (8) and can snap in the described draw-in groove (8), the jointed shaft of lever (5) is provided with and makes lever (5) and button (6) block the torsion spring (9) of trend mutually, is provided with the spring that button (6) is upspring in the button (6); Lever (5) is corresponding with an end of connecting axle (10), and the other end of connecting axle (10) passes miniature circuit breaker housing (1) and links to each other with snap close.
2. according to claim 1ly be with earth leakage protective miniature circuit breaker; it is characterized in that: also include lead-out terminal (11); described lead-out terminal (11) is installed in the terminal base (12); terminal base (12) is made up of upper end stroma (13) and lower end stroma (14); upper end stroma (13) and lower end stroma (14) clamping mutually; lower end stroma (14) is provided with slot (15); upper end stroma (13) is provided with plate (16), and the connecting plate (30) of lead-out terminal (11) is positioned at the slot (15) of lower end stroma (14) and is compressed by the plate (16) on the upper end stroma (13).
3. according to claim 2ly be with earth leakage protective miniature circuit breaker; it is characterized in that: described upper end stroma (13) is provided with grab (17) and location hole (18), and lower end stroma (14) is provided with and grab (17) and corresponding groove of location hole (18) (19) and reference column (20).
4. describedly be with earth leakage protective miniature circuit breaker according to claim 1,2 or 3; it is characterized in that: the lower surface of described miniature circuit breaker housing (1) and earth leakage protective device housing (2) is provided with movable clamp (21); movable clamp (21) comprises operating side (22), working end (23) and plate body (24); described plate body (24) above and below all is recessed to the plate face, and plate body (24) is provided with penetrating bar hole (25) and gusset (26).
5. describedly be with earth leakage protective miniature circuit breaker according to claim 1,2 or 3, it is characterized in that: lever (5) is provided with side plate (31), and described side plate (31) is corresponding with connecting axle (10).
6. describedly be with earth leakage protective miniature circuit breaker according to claim 1,2 or 3; it is characterized in that: also include test button (27); being provided with elasticity bending (28) in the earth leakage protective device housing (2) reaches and the corresponding contact chip of elasticity bending (28) (29); elasticity bending (28) and contact chip (29) are electrically connected in the leak(age) test circuit, and stretch out outside earth leakage protective device housing (2) test button (27) and its termination corresponding with elasticity bending (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073249 CN102136401B (en) | 2011-03-24 | 2011-03-24 | Miniature circuit breaker with leakage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073249 CN102136401B (en) | 2011-03-24 | 2011-03-24 | Miniature circuit breaker with leakage protection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102136401A true CN102136401A (en) | 2011-07-27 |
| CN102136401B CN102136401B (en) | 2012-12-19 |
Family
ID=44296148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110073249 Active CN102136401B (en) | 2011-03-24 | 2011-03-24 | Miniature circuit breaker with leakage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102136401B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702535A (en) * | 2016-03-30 | 2016-06-22 | 浙江天正电气股份有限公司 | Residual-current circuit breaker |
| LT6421B (en) | 2016-11-24 | 2017-07-10 | Nengqing Wang | Circuit-breaker with self - locking function |
| LT6420B (en) | 2016-11-24 | 2017-07-10 | Yinghua Jin | Circuit breaker with self-locking function |
| LT6419B (en) | 2016-11-24 | 2017-07-10 | Yinghua Jin | Circuit-breaker with self-locking function |
| LT6418B (en) | 2016-11-24 | 2017-07-10 | Lirong Yan | Circuit-breaker with self-locing function |
| LT6440B (en) | 2016-11-24 | 2017-08-25 | Yan Lirong | Circuit -breaker with self-locking function |
| CN108511288A (en) * | 2018-03-07 | 2018-09-07 | 广东南冠电气有限公司 | A kind of compact electromagnetic dropout type leakage circuit breakers |
| CN109166775A (en) * | 2018-10-09 | 2019-01-08 | 温州华嘉电器有限公司 | A kind of novel electromagnetic leakage circuit breakers |
| CN109686623A (en) * | 2017-10-18 | 2019-04-26 | 周思雨 | A kind of miniature circuit breaker |
| CN110278658A (en) * | 2018-03-16 | 2019-09-24 | 西门子公司 | Flexible circuit board and its breaker |
| CN113258533A (en) * | 2021-06-30 | 2021-08-13 | 江西琰圭技术服务有限公司 | Intelligent no-tripping leakage protection method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069746Y (en) * | 2007-08-22 | 2008-06-04 | 浙江省志明电气进出口有限公司 | Electronic current leakage breaker |
| US20080180195A1 (en) * | 2006-12-25 | 2008-07-31 | Fuji Electric Fa Components & Systems Co., Ltd. | Earth leakage circuit breaker |
| JP2008204714A (en) * | 2007-02-19 | 2008-09-04 | Fuji Electric Fa Components & Systems Co Ltd | Leakage tripping device of earth leakage breaker |
| CN201256133Y (en) * | 2008-08-15 | 2009-06-10 | 陕西群力电工有限责任公司 | Novel circuit breaker for leakage protection |
| CN201946535U (en) * | 2011-03-24 | 2011-08-24 | 浙江天正电气股份有限公司 | Small-sized circuit breaker with electric leakage protection function |
-
2011
- 2011-03-24 CN CN 201110073249 patent/CN102136401B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080180195A1 (en) * | 2006-12-25 | 2008-07-31 | Fuji Electric Fa Components & Systems Co., Ltd. | Earth leakage circuit breaker |
| JP2008204714A (en) * | 2007-02-19 | 2008-09-04 | Fuji Electric Fa Components & Systems Co Ltd | Leakage tripping device of earth leakage breaker |
| CN201069746Y (en) * | 2007-08-22 | 2008-06-04 | 浙江省志明电气进出口有限公司 | Electronic current leakage breaker |
| CN201256133Y (en) * | 2008-08-15 | 2009-06-10 | 陕西群力电工有限责任公司 | Novel circuit breaker for leakage protection |
| CN201946535U (en) * | 2011-03-24 | 2011-08-24 | 浙江天正电气股份有限公司 | Small-sized circuit breaker with electric leakage protection function |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702535A (en) * | 2016-03-30 | 2016-06-22 | 浙江天正电气股份有限公司 | Residual-current circuit breaker |
| LT6421B (en) | 2016-11-24 | 2017-07-10 | Nengqing Wang | Circuit-breaker with self - locking function |
| LT6420B (en) | 2016-11-24 | 2017-07-10 | Yinghua Jin | Circuit breaker with self-locking function |
| LT6419B (en) | 2016-11-24 | 2017-07-10 | Yinghua Jin | Circuit-breaker with self-locking function |
| LT6418B (en) | 2016-11-24 | 2017-07-10 | Lirong Yan | Circuit-breaker with self-locing function |
| LT6440B (en) | 2016-11-24 | 2017-08-25 | Yan Lirong | Circuit -breaker with self-locking function |
| CN109686623A (en) * | 2017-10-18 | 2019-04-26 | 周思雨 | A kind of miniature circuit breaker |
| CN109686623B (en) * | 2017-10-18 | 2020-08-28 | 周思雨 | Small-sized circuit breaker |
| CN108511288A (en) * | 2018-03-07 | 2018-09-07 | 广东南冠电气有限公司 | A kind of compact electromagnetic dropout type leakage circuit breakers |
| CN108511288B (en) * | 2018-03-07 | 2023-09-05 | 广东南冠电气有限公司 | Small electromagnetic trip type leakage circuit breaker |
| CN110278658A (en) * | 2018-03-16 | 2019-09-24 | 西门子公司 | Flexible circuit board and its breaker |
| CN110278658B (en) * | 2018-03-16 | 2023-05-02 | 西门子公司 | Flexible circuit board and circuit breaker thereof |
| CN109166775A (en) * | 2018-10-09 | 2019-01-08 | 温州华嘉电器有限公司 | A kind of novel electromagnetic leakage circuit breakers |
| CN113258533A (en) * | 2021-06-30 | 2021-08-13 | 江西琰圭技术服务有限公司 | Intelligent no-tripping leakage protection method and system |
| CN113258533B (en) * | 2021-06-30 | 2021-09-24 | 江西琰圭技术服务有限公司 | Intelligent no-tripping leakage protection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102136401B (en) | 2012-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136401B (en) | Miniature circuit breaker with leakage protection function | |
| CN201425994Y (en) | Power plug with leakage protection function | |
| US20060238933A1 (en) | Ground fault circuit interrupters providing end of the life test | |
| CN203551766U (en) | Button type electric energy metering junction box | |
| CN101740271A (en) | Leakage circuit breaker | |
| CN201946535U (en) | Small-sized circuit breaker with electric leakage protection function | |
| CN201975350U (en) | Small-sized circuit breaker with function of undervoltage and overvoltage protection | |
| CN101958212B (en) | Receptacle type residual current circuit breaker | |
| CN201303151Y (en) | Leakage protection socket | |
| EP2685484B1 (en) | Circuit breaker for optimizing space allocation | |
| CN200994025Y (en) | Leakage protection socket | |
| CN204885043U (en) | Plug -in circuit breaker | |
| CN218939548U (en) | Electronic automatic reclosing power supply protector | |
| CN100573773C (en) | Have indication, reset, the circuit breaker of warning, trip gear | |
| CN206353512U (en) | Intelligent electronic-type breaker | |
| CN108288785B (en) | Tripolar on-off leakage protection plug | |
| CN202142482U (en) | Electric leakage tripping mechanism | |
| CN200990455Y (en) | Electricity leakage protection socket with service life terminal detection function | |
| CN201985055U (en) | Electromagnetic type backup protection device | |
| CN106505542B (en) | Surge protector pedestal | |
| CN102237228B (en) | Over-voltage/under-voltage protection device of miniature circuit breaker | |
| US9170293B2 (en) | Power line indicator accessory for fusible circuit protection device array | |
| CN201041795Y (en) | Breaker with indication, reset, alarm and buckle release device | |
| FI123347B (en) | socket | |
| CN112750667A (en) | Plug-in circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |