CN203787366U - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
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- CN203787366U CN203787366U CN201320791774.1U CN201320791774U CN203787366U CN 203787366 U CN203787366 U CN 203787366U CN 201320791774 U CN201320791774 U CN 201320791774U CN 203787366 U CN203787366 U CN 203787366U
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- circuit breaker
- current circuit
- residual current
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- 230000007935 neutral effect Effects 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 206010039509 Scab Diseases 0.000 description 14
- 230000005611 electricity Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
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Abstract
Provided is a residual current circuit breaker, comprising an insulating casing, a mechanical assembly, an electromagnetic release, a circuit board, and a test device. The test device comprises a test button, a torsion spring, a conducting strip, and a test resistor. The test button is disposed on the insulating casing. The conducting strip is disposed in the insulating casing. The upper pin of the torsion spring contacts with the test button and provides precompression for the test button. When the test button is pressed, the upper pin of the torsion spring contacts with the conducting strip, and when the test button is loosened, the upper pin of the torsion spring separates from the conducting strip and makes the button reset. The lower pin of the torsion spring is connected with the magnetic yoke of the electromagnetic release. The test resistor is disposed on the circuit board. The conducting strip is connected with an end of the test resistor. The magnetic yoke and the other end of the test resistor are respectively connected with a phase line and a neutral line of a power supply. The test loop of the residual current circuit breaker is reasonable in layout, simple in structure, and low in cost.
Description
Technical field
The utility model belongs to Low Voltage Electrical Apparatus, particularly relates to a kind of residual current circuit breaker with experimental rig.
Background technology
Residual current circuit breaker is widely used in low pressure Terminal Power Distribution System, has the functions such as electric leakage, over load protection.When the faults such as generation earth fault, apparatus insulated damage are leaked electricity, someone gets an electric shock, residual current circuit breaker can automatically be threaded off and be cut off the electricity supply within the extremely short time, ensures the safety of the person and property.
In order to detect the creepage protection function of residual current circuit breaker, whether normally work; residual current circuit breaker is all provided with experimental rig conventionally at present; the creepage protection function of inspection residual current circuit breaker that can be regular; experimental rig generally includes the test loop being comprised of the test button of connecting and test resistance; press test button conduction test loop and can trigger electric leakage signal; if residual current circuit breaker is automatically threaded off and cut off the electricity supply, illustrate that creepage protection function is normal, as not automatic dropout illustrates that creepage protection function is not normal.Therefore how there is strong demand in market for the miniaturization of product always, and the residual current circuit breaker of production miniaturization and safety is the emphasis developing in the industry always.
Current conventional electronic type residual current circuit breaker, the terminals of its top, as the inlet wire of power supply, are called upper incoming line conventionally, and the terminals of below, as the connection of load, are called lower outlet.Conventionally require the upper incoming line of power end and the lower outlet of load end can not wrong, power supply can not be connected on to lower outlet, and load is connected on to upper incoming line.Once wrong, is called reverse wiring, will make product burn out.This is because the creepage protection function part of electronic type residual current circuit breaker need to be from mains side power taking, if upper incoming line is correctly connected with power supply, circuit breaker receives electric leakage signal and also can cut off creepage protection function power supply supply partly when threading off; If but lower outlet is connected with power supply mistakenly; even after circuit breaker tripping in off-state; creepage protection function part is also lasting charged; for example, and at this moment if the test loop of creepage protection function part is (in on-state always; the test button that user pins residual current circuit breaker is not put); test loop can make creepage protection function part continuous firing and cause the electronic component of creepage protection function part to burn out, thereby damages whole residual current circuit breaker.Therefore a kind of micro type residual current circuit breaker reverse wiring function, simple in structure that has further need to be provided.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, and a kind of residual current circuit breaker simple in structure reliably that operates is provided.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of residual current circuit breaker, comprise insulation crust, mechanical component 8, magnetictrip 4, wiring board, experimental rig, described experimental rig comprises test button 1, torsion spring 2, conducting strip 3, test resistance, test button 1 is arranged on insulation crust, conducting strip 3 is arranged in insulation crust, the upper pin of torsion spring 2 contacts with test button 1, and provide precompression for test button 1, while pressing test button 1, the upper pin of torsion spring 2 contacts with conducting strip 3, and while unclamping test button 1, the upper pin of torsion spring 2 is separated with conducting strip 3 and button 1 is resetted; The leftover bits and pieces of torsion spring 2 is connected with the yoke 5 of magnetictrip 4, and in the circuit board, conducting strip 3 is connected to one end of test resistance in test resistance setting, and yoke 5 and the test resistance other end are connected to respectively phase line and the neutral line of power supply.
Further, described yoke 5 is provided with a breach, the leftover bits and pieces of torsion spring 2 contacts through yoke 5 breach and with yoke 5, when the leftover bits and pieces end of torsion spring 2 is arranged in residual current circuit breaker dropout, on the actuating length track of one lever 6 of mechanical component 8, can make the leftover bits and pieces of torsion spring 2 separated with yoke 5.
Further, described mechanical component 8 comprises handle 12, pull bar 13, lever 6, snap close 14, tripping 15; Handle 12 is connected with snap close 14 by pull bar 13, and lever 6 is arranged on insulation crust, and back-moving spring 17 is connected with lever 6 with insulation crust respectively, and snap close 14, tripping 15 and contact support 7 are arranged on lever 6, and snap close 14 can be connected by hasp with tripping 15.
Further, when residual current circuit breaker is normally worked, the leftover bits and pieces of described torsion spring 2 contacts with the upper surface of the breach of yoke 5, and the leftover bits and pieces of torsion spring 2 is separated with the lever 6 in mechanical component 8; When residual current circuit breaker is threaded off, lever 6 rotations in mechanical component 8 make the leftover bits and pieces of torsion spring 2 move down separated with yoke 5.
Further, the leftover bits and pieces of described torsion spring 2 is provided with the leftover bits and pieces that a bend 201 makes torsion spring 2 and forms a U-shaped structure, is provided with for the projection 11 of bend 201 of the leftover bits and pieces of torsion spring 2 is installed in insulation crust.
Further, described yoke 5 comprises the first extension 502, the second extension 504 that forms U-shaped structure, the first extension 502 of yoke 5 is between torsion spring 2 and mechanical component 8, and the breach 501 coordinating for the leftover bits and pieces with torsion spring 2 is arranged on the first extension 502.
Further, have the striking portion 507 of hook solid in the U-shaped structure of described the first extension 502 and the second extension 504 formations, striking portion 507 is provided with fixed contact.
Further, one end that described test resistance is connected with the neutral line of power supply can be connected with the neutral line of power supply through neutral line fixed contact.
The experimental rig of the utility model residual current circuit breaker uses yoke as the element of test loop, makes test loop simple in structure, and rationally distributed, cost is low.Further, by offer a breach in yoke, on running orbit when the lever that the leftover bits and pieces that makes torsion spring can be arranged on mechanical component through the breach of yoke is threaded off, do not need to increase new lever and just realize reverse wiring function, cost simple in structure is low rationally distributed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model residual current circuit breaker while normally working;
Fig. 2 is the structural representation that moment is connected in the utility model residual current circuit breaker test loop;
Fig. 3 is the structural representation after the utility model residual current circuit breaker is threaded off;
Fig. 4 is the structure chart of the yoke of the utility model residual current circuit breaker
Embodiment
The embodiment providing below in conjunction with accompanying drawing 1 to 4, further illustrates the embodiment of residual current circuit breaker of the present utility model.Residual current circuit breaker of the present utility model is not limited to the description of following examples.
Of the present utility model a kind of electronic type residual current circuit breaker as shown in Figure 1, comprises insulation crust, mechanical component 8, moving contact 9, fixed contact 10, magnetictrip 4, earth detector, wiring board, experimental rig; Moving contact supports 7 to be connected with mechanical component 8 by contact, and the contact that mechanical component 8 actions can realize dynamic/static contact with moving contact support 7 motions, with separated, realizes combined floodgate and the disconnection of residual current circuit breaker.
Earth detector is connected with wiring board, and wiring board is connected with magnetictrip 4, magnetictrip 4 can Crush trigger assembly 8 actions realize the automatic dropout of residual current circuit breaker.When the faults such as generation earth fault, apparatus insulated damage are leaked electricity, someone gets an electric shock, earth detector outputs to wiring board by leakage current signal; wiring board outputs voltage signal to magnetictrip 4 after receiving leakage current signal; striker Crush trigger assembly 8 actions of magnetictrip 4 are threaded off residual current circuit breaker automatically, thus the earth leakage protective of realization.
Experimental rig comprises test button 1, torsion spring 2, conducting strip 3, test resistance; Test button 1 is arranged on insulation crust, conducting strip 3 is arranged on the below of test button 1 in insulation crust, the upper pin of torsion spring 2 contacts with test button 1, and provide precompression for test button 1, while pressing test button 1, the upper pin of torsion spring 2 contacts with conducting strip 3, and while unclamping test button 1, the upper pin of torsion spring 2 is separated with conducting strip 3 and button 1 is resetted; The leftover bits and pieces of torsion spring 2 is connected with the yoke 5 of magnetictrip 4, and in the circuit board, conducting strip 3 is connected to one end of test resistance through wire in test resistance setting, and phase line and the neutral line that yoke 5 and the test resistance other end are connected to respectively power supply form test loop.When pressing test button 1, test loop conducting can trigger earth detector and produce electric leakage signal, and then triggers residual current circuit breaker and automatically thread off, and can detect the creepage protection function of residual current circuit breaker.
In the present embodiment, be provided with fixed contact 9 in yoke 5, when normal wiring, yoke 5 is connected to form test loop through fixed contact 9, moving contact 10 with the phase line of power supply; When reverse wiring, yoke 5 is connected with the phase line of power supply through fixed contact 9, without moving contact 10, just can form test loop.One end that in like manner test resistance is connected with the power supply neutral line can directly be connected with the neutral line of power supply through wire; In thering is the residual current circuit breaker of neutral line moving contact and neutral line fixed contact, one end that test resistance is connected with the power supply neutral line can be connected with the neutral line of power supply through neutral line fixed contact, when normal wiring, through neutral line moving contact, be connected with the neutral line of power supply, when reverse wiring, without neutral line moving contact.Conventional earth detector is zero sequence current mutual inductor, two ends, test loop are connected with the neutral line with the phase line of power supply respectively, test loop has one end to pass zero sequence current mutual inductor, test loop generally includes test button and the test resistance of series connection, has electric current to pass zero sequence current mutual inductor and can trigger earth detector generation electric leakage signal when the conducting of the closed test loop of test button.
Conventionally in residual current circuit breaker, instantaneous release and leakage tripping device are distributed in different insulation crusts separately, small product size is all larger, the utility model residual current circuit breaker is combined instantaneous release and leakage tripping device to form magnetictrip and be arranged in same insulation crust, make small product size reduce half, experimental rig uses the yoke of magnetictrip as the element of test loop, other element in test loop can be connected by yoke, as the test resistance in the present embodiment and torsion spring 2, this makes test loop simple in structure, rationally distributed, cost is low.Especially when the setting of torsion spring 2 also has other particular requirement, above-mentioned advantage will be more obvious, as Figure 1 and Figure 4, residual current circuit breaker of the present utility model is provided with a breach in yoke 5, the leftover bits and pieces of torsion spring 2 contacts through yoke 5 breach and with yoke 5, when the leftover bits and pieces end of torsion spring 2 is arranged in residual current circuit breaker dropout, on the actuating length track of mechanical component 8 one levers 6, can make the leftover bits and pieces of torsion spring 2 separated with yoke 5, torsion spring 2 can make residual current circuit breaker have reverse wiring function with mechanical component 8 co-operatings.
In residual current circuit breaker, mechanical component 8 is multi-link structure, and common is four-bar linkage structure, and in the present embodiment, mechanical component 8 is typical quadric chain.Mechanical component 8 comprises handle 12, pull bar 13, lever 6, snap close 14, tripping 15; Handle 12 is connected with snap close 14 by pull bar 13, lever 6 is arranged on insulation crust by minor axis 16 axis holes, back-moving spring 17 is connected with lever 6 with insulation crust respectively, snap close 14 and tripping 15 are arranged on lever 6 by the stake axle on lever 6, and contact support 7 is arranged on lever 6 by the axis hole on lever 6.Snap close 14 is connected with tripping 15 hasps makes that four-bar linkage structure is stable can interact, and when driving handle 12, pull bar 13 reaches, rotate snap close 14, and lever 6 back seats make back-moving spring 17 compressions, and quadric chain is crossed dead point, dynamic/static contact contact energising; When being short-circuited or during leak current fault, the striker 18 of magnetictrip 4 pushes tripping 15 and rotates counterclockwise, snap close 14 is connected releasing with tripping 15 hasps, quadric chain is disintegrated, back-moving spring 17 resets lever 6, and handle 12 is got back to initial position, and dynamic/static contact is separated simultaneously.The utility model is offered a breach in yoke 5, on running orbit when the leftover bits and pieces that makes torsion spring 2 can be arranged on lever 6 and threads off through the breach of yoke 5, by an original lever 6 in mechanical component 8, do not need to increase new lever and just realize reverse wiring function, cost simple in structure is low rationally distributed.In the present embodiment; when residual current circuit breaker is threaded off automatically; by the lever 6 in mechanical component 8, make the leftover bits and pieces of torsion spring 2 separated with yoke 5; because the formation of mechanical component 8 is had nothing in common with each other; based on design of the present utility model; can also realize the leftover bits and pieces of torsion spring 2 by other parts in mechanical component 8 separated with yoke 5, all should be considered as belonging to protection range of the present utility model.
The process that torsion spring 2 and mechanical component 8 co-operatings realize reverse wiring function as Figure 1-3, Fig. 1 is the structural representation of residual current circuit breaker while normally working, now the upper pin of torsion spring 2 is separated with conducting strip 3, the leftover bits and pieces of torsion spring 2 contacts with the upper surface of the breach of yoke 5, the leftover bits and pieces of torsion spring 2 is separated with the lever 6 in mechanical component 8, and torsion spring 2 can not hinder motion and the characteristic of residual current circuit breaker mechanical component.Fig. 2 is the structural representation that moment is connected in residual current circuit breaker test loop, presses test button moment when residual current circuit breaker is normally worked, and now the upper pin of torsion spring 2 contacts the test loop connection of residual current circuit breaker with conducting strip 3.When test loop is connected, wiring board outputs voltage signal to magnetictrip 4 after receiving leakage current signal, and magnetictrip action makes mechanical component 8 actions realize residual current circuit breaker dropout.Fig. 3 is the structural representation after residual current circuit breaker is threaded off, when 8 action of residual current circuit breaker dropout mechanical component, lever 6 rotations in mechanical component 8 move down the leftover bits and pieces of torsion spring 2, the leftover bits and pieces of torsion spring 2 is separated with the upper surface of the breach of yoke 5, and the leftover bits and pieces of torsion spring 2 and the lower surface of breach are also separated simultaneously.Even if now, always according to test button 1, test loop is also in open-circuit condition.
By Fig. 1-Fig. 3, can find out torsion spring 2 and mechanical component 8 co-operatings, state regardless of test button, after completing experimental rig test all by open test loop, avoided residual current circuit breaker in reverse wiring situation during always according to test button test loop continue to send the defect that electric leakage signal finally causes product to burn out, thereby guaranteed that even residual current circuit breaker also can carry out safely experimental rig routine test when reverse wiring, realized the reverse wiring function of residual current circuit breaker.
The residual current circuit breaker of the present embodiment, as shown in Figure 1-Figure 3, the leftover bits and pieces of torsion spring 2 is provided with a bend 201 makes the leftover bits and pieces of torsion spring 2 form a U-shaped structure, in insulation crust, be provided with for the projection 11 of bend 201 of the leftover bits and pieces of torsion spring 2 is installed, make the leftover bits and pieces of torsion spring 2 more stable with coordinating of mechanical component 8, residual current circuit breaker structure is also more compact simultaneously, and this is a kind of preferred version.
The structure of the present embodiment yoke 5 as shown in Figure 4, comprise the first extension 502, the second extension 504 that form U-shaped structure, in U-shaped structural portion, have the striking portion 507 of hook solid, striking portion 507 is provided with fixed contact 9, the space 506 that the first extension 502, the second extension are 504 is for placing instantaneous coil, and the depression 503 and 505 on the first extension 502, the second extension 504 is for arranging iron core.The right-hand leakage tripping device that arranges of yoke, leakage tripping device and instantaneous release are combined formation magnetictrip 4 and are arranged at residual current circuit breaker middle part, the first extension 502 of yoke 5 is between torsion spring 2 and mechanical component 8, and the breach 501 coordinating for the leftover bits and pieces with torsion spring 2 is arranged on the first extension 502.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. a residual current circuit breaker, comprises insulation crust, mechanical component (8), magnetictrip (4), wiring board, experimental rig, it is characterized in that:
Described experimental rig comprises test button (1), torsion spring (2), conducting strip (3), test resistance, test button (1) is arranged on insulation crust, conducting strip (3) is arranged in insulation crust, the upper pin of torsion spring (2) contacts with test button (1), and provide precompression for test button (1), while pressing test button (1), the upper pin of torsion spring (2) contacts with conducting strip (3), and while unclamping test button (1), the upper pin of torsion spring (2) is separated with conducting strip (3) and button (1) is resetted; The leftover bits and pieces of torsion spring (2) is connected with the yoke (5) of magnetictrip (4), and in the circuit board, conducting strip (3) is connected to one end of test resistance in test resistance setting, and yoke (5) and the test resistance other end are connected to respectively phase line and the neutral line of power supply.
2. residual current circuit breaker according to claim 1, it is characterized in that: described yoke (5) is provided with a breach, the leftover bits and pieces of torsion spring (2) contacts through yoke (5) breach and with yoke (5), when the leftover bits and pieces end of torsion spring (2) is arranged in residual current circuit breaker dropout, on the actuating length track of one lever (6) of mechanical component (8), can make the leftover bits and pieces of torsion spring (2) separated with yoke (5).
3. residual current circuit breaker according to claim 2, is characterized in that: described mechanical component (8) comprises handle (12), pull bar (13), lever (6), snap close (14), tripping (15); Handle (12) is connected with snap close (14) by pull bar (13), lever (6) is arranged on insulation crust, back-moving spring (17) is connected with lever (6) with insulation crust respectively, it is upper that snap close (14), tripping (15) and contact support (7) are arranged on lever (6), and snap close (14) can be connected by hasp with tripping (15).
4. residual current circuit breaker according to claim 3; it is characterized in that: when residual current circuit breaker is normally worked; the leftover bits and pieces of described torsion spring (2) contacts with the upper surface of the breach of yoke (5), and the leftover bits and pieces of torsion spring (2) is separated with the lever (6) in mechanical component (8); When residual current circuit breaker is threaded off, a lever (6) rotation in mechanical component (8) makes the leftover bits and pieces of torsion spring (2) move down separated with yoke (5).
5. residual current circuit breaker according to claim 2, it is characterized in that: the leftover bits and pieces of described torsion spring (2) is provided with the leftover bits and pieces that a bend (201) makes torsion spring (2) and forms a U-shaped structure, in insulation crust, be provided with for the projection (11) of bend (201) of the leftover bits and pieces of torsion spring (2) is installed.
6. residual current circuit breaker according to claim 2, it is characterized in that: described yoke (5) comprises the first extension (502), the second extension (504) that forms U-shaped structure, first extension (502) of yoke (5) is positioned between torsion spring (2) and mechanical component (8), and the breach 501 coordinating for the leftover bits and pieces with torsion spring (2) is arranged on the first extension (502).
7. residual current circuit breaker according to claim 6, is characterized in that: in the U-shaped structure of described the first extension (502) and the second extension (504) formation, have the striking portion (507) of hook solid, striking portion (507) is provided with fixed contact.
8. residual current circuit breaker according to claim 1, is characterized in that: one end that described test resistance is connected with the neutral line of power supply can be connected with the neutral line of power supply through neutral line fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791774.1U CN203787366U (en) | 2013-12-04 | 2013-12-04 | Residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791774.1U CN203787366U (en) | 2013-12-04 | 2013-12-04 | Residual current circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN203787366U true CN203787366U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320791774.1U Expired - Lifetime CN203787366U (en) | 2013-12-04 | 2013-12-04 | Residual current circuit breaker |
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| Country | Link |
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| CN (1) | CN203787366U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409292A (en) * | 2014-12-05 | 2015-03-11 | 温州力能电器科技有限公司 | Residual current circuit breaker |
| CN105510818A (en) * | 2015-12-30 | 2016-04-20 | 三信国际电器上海有限公司 | Breaker and testing device and method thereof |
| CN107248487A (en) * | 2017-06-29 | 2017-10-13 | 首瑞（天津）电气设备有限公司 | The controller of electronic type residual current circuit breaker |
| CN107248488A (en) * | 2017-07-20 | 2017-10-13 | 国隆电气有限公司 | Shove the back-up protection device of protector |
| CN107316785A (en) * | 2017-08-04 | 2017-11-03 | 李文杰 | The unimodular number multifunctional electric leakage circuit breaker of non-directional wiring |
| CN110880440A (en) * | 2019-11-26 | 2020-03-13 | 德力西电气有限公司 | Leakage protection link gear and leakage protection circuit breaker |
| CN112635259A (en) * | 2020-12-25 | 2021-04-09 | 浙江奥来电器有限公司 | Electricity taking mechanism of test device of circuit breaker |
| CN112863966A (en) * | 2019-11-26 | 2021-05-28 | 浙江正泰电器股份有限公司 | Circuit breaker |
| WO2022205759A1 (en) * | 2021-03-31 | 2022-10-06 | 英特曼电工（常州）有限公司 | Residual current device of 2p2 analog-to-digital electromagnetic residual current circuit breaker with overcurrent protection |
| CN115642060A (en) * | 2022-09-06 | 2023-01-24 | 温州东极电气有限公司 | Novel circuit breaker |
-
2013
- 2013-12-04 CN CN201320791774.1U patent/CN203787366U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409292A (en) * | 2014-12-05 | 2015-03-11 | 温州力能电器科技有限公司 | Residual current circuit breaker |
| CN105510818A (en) * | 2015-12-30 | 2016-04-20 | 三信国际电器上海有限公司 | Breaker and testing device and method thereof |
| CN105510818B (en) * | 2015-12-30 | 2019-02-05 | 三信国际电器上海有限公司 | Circuit breaker and its test device and method |
| CN107248487A (en) * | 2017-06-29 | 2017-10-13 | 首瑞（天津）电气设备有限公司 | The controller of electronic type residual current circuit breaker |
| CN107248487B (en) * | 2017-06-29 | 2020-01-10 | 首瑞（天津）电气设备有限公司 | Controller of electronic leakage circuit breaker |
| CN107248488A (en) * | 2017-07-20 | 2017-10-13 | 国隆电气有限公司 | Shove the back-up protection device of protector |
| CN107248488B (en) * | 2017-07-20 | 2019-11-12 | 国隆电气有限公司 | Back-up protector for surge protector |
| CN107316785A (en) * | 2017-08-04 | 2017-11-03 | 李文杰 | The unimodular number multifunctional electric leakage circuit breaker of non-directional wiring |
| CN110880440A (en) * | 2019-11-26 | 2020-03-13 | 德力西电气有限公司 | Leakage protection link gear and leakage protection circuit breaker |
| CN112863966A (en) * | 2019-11-26 | 2021-05-28 | 浙江正泰电器股份有限公司 | Circuit breaker |
| EP4068328A4 (en) * | 2019-11-26 | 2024-01-10 | Zhejiang Chint Electrics Co., Ltd. | CIRCUIT BREAKER |
| CN112635259A (en) * | 2020-12-25 | 2021-04-09 | 浙江奥来电器有限公司 | Electricity taking mechanism of test device of circuit breaker |
| WO2022135036A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Power taking mechanism of test device of circuit breaker |
| WO2022205759A1 (en) * | 2021-03-31 | 2022-10-06 | 英特曼电工（常州）有限公司 | Residual current device of 2p2 analog-to-digital electromagnetic residual current circuit breaker with overcurrent protection |
| EP4089710A4 (en) * | 2021-03-31 | 2022-11-16 | Etman Electric (Changzhou) Co., Ltd. | 2P2 OVERCURRENT PROTECTION ANALOG-DIGITAL ELECTROMAGNETIC RESIDUAL CURRENT CIRCUIT BREAKER RESIDUAL CURRENT DEVICE |
| CN115642060A (en) * | 2022-09-06 | 2023-01-24 | 温州东极电气有限公司 | Novel circuit breaker |
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