CN207587654U - The mechanism for testing of earth leakage circuit breaker - Google Patents

The mechanism for testing of earth leakage circuit breaker Download PDF

Info

Publication number
CN207587654U
CN207587654U CN201721180039.1U CN201721180039U CN207587654U CN 207587654 U CN207587654 U CN 207587654U CN 201721180039 U CN201721180039 U CN 201721180039U CN 207587654 U CN207587654 U CN 207587654U
Authority
CN
China
Prior art keywords
fixed plate
testing
mounting portion
fixing groove
earth leakage
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
Application number
CN201721180039.1U
Other languages
Chinese (zh)
Inventor
陈凯隆
李求杰
朱金鸥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Chint Electrics Co Ltd
Original Assignee
Zhejiang Chint Electrics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Chint Electrics Co Ltd filed Critical Zhejiang Chint Electrics Co Ltd
Priority to CN201721180039.1U priority Critical patent/CN207587654U/en
Application granted granted Critical
Publication of CN207587654U publication Critical patent/CN207587654U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Breakers (AREA)

Abstract

A kind of mechanism for testing of earth leakage circuit breaker,It includes the housing of pedestal and case composition,The test chamber for accommodating mechanism for testing is equipped in housing,Mechanism for testing includes spaced quiet shrapnel and spring plate,The spring plate includes integrally formed mounting portion and contact site,Pedestal is equipped with fixed plate component in the side of test chamber,Fixed plate component is equipped with the fixing groove for portion to be fixedly mounted,Case is equipped with inserted link corresponding with fixing groove,Mounting portion can be pushed into fixing groove by inserted link,By setting inserted link corresponding with fixing groove on case,During case lid is closed onto pedestal,By inserted link by mounting portion be pushed into fixing groove in precalculated position,Ensure that mounting portion is installed in place,And mounting portion can also be limited after mounting,It is not required to increase additional step,One action completes the multinomial fittage of housing and mechanism for testing,It not only ensure that the consistency of quality,In turn ensure the efficiency of assembling.

Description

The mechanism for testing of earth leakage circuit breaker
Technical field
The utility model is related to Low Voltage Electrical Apparatus, more particularly to a kind of mechanism for testing of earth leakage circuit breaker.
Background technology
Earth leakage circuit breaker is widely used in the fields such as industry, business, residential houses, when circuit occur electric leakage, overload, When short-circuit, earth leakage circuit breaker can be set in rapid disengagement failure power supply, the protection person and electricity consumption within the defined extremely short time Standby safety.But existing earth leakage circuit breaker experimental rig cooperation is unreliable, and occupied space is big, and production cost also compares Higher, for the earth leakage circuit breaker that internal structure is more compact, the volume of inner body is also smaller, is stranded in assembling Difficult bigger, fraction defective and serious forgiveness are all difficult to the contact chip for reaching requirement, particularly mechanism for testing, can if installation is not in place Mechanism for testing can be made to fail, cause device for switching that can not realize earth leakage protective test function.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of leakage simple in structure, reliability is high The mechanism for testing of the mechanism for testing of electric protection breaker.
To achieve the above object, the utility model employs following technical solution:
A kind of mechanism for testing of earth leakage circuit breaker, including the housing that pedestal 200 and case 300 form, in housing Equipped with the test chamber 11 for accommodating mechanism for testing, mechanism for testing includes spaced quiet shrapnel 410 and spring plate, the spring plate Including integrally formed mounting portion 421 and contact site 422, pedestal 200 is equipped with fixed plate component 210 in the side of test chamber 11, Fixed plate component 210 is equipped with the fixing groove 230 for portion 421 to be fixedly mounted, and case 300 is equipped with corresponding with fixing groove 230 Inserted link 310, mounting portion 421 can be pushed into fixing groove 230 by inserted link 310.
Optionally, the inner wall of the test chamber 11 is equipped with what is coordinated with inserted link 310 on the position of corresponding fixing groove 230 Guide groove 220.
Optionally, the side wall of the fixing groove 230 is equipped with fastening protrusion 212, and fastening protrusion 212 is matched with mounting portion 421 Conjunction face is cambered surface.
Optionally, the bottom of the fixing groove 230 is equipped with padded boss 213, and padded boss 213 is arranged on fastening protrusion The highest point of 212 protrusions.
Optionally, magnetic flow convertor 603 is equipped in the housing, in side of the magnetic flow convertor 603 far from mechanism for testing The indicator 607 coordinated equipped with the push rod 606 coordinated with magnetic flow convertor 603 and with push rod 606;The push rod 606 includes Integrally formed pivot part 6061 and the swing part 6062 rotated around pivot part 6061, are equipped with and swing part on pedestal 200 6062 matched push rod guide grooves;The indicator 607 include reach hull outside operation portion 6071 and with swing The driving portion 6072 that portion 6062 coordinates.
Optionally, the pivot part 6061 is equipped with the pivot 6063 being pivotally connected with housing, one end of swing part 6062 Equipped with the mounting hole 6064 with the cooperation of the dynamic iron core 6031 of magnetic flow convertor 603, the other end is equipped with the linkage coordinated with breaker Bar 6065 is equipped with the driver slot 6066 coordinated with the driving portion 6072 of indicator 607, driver slot at the middle part of swing part 6062 The shutter 6067 coordinated with housing is equipped between 6066 and interlocking bar 6065;Driver slot is stretched into one end of the driving portion 6072 Coordinate in 6066, the inner wall of the other end and pedestal 200 coordinates.
Optionally, the housing is installed on breaker, is equipped with accommodates mechanism for testing and magnetic flow convertor 603 in the housing The first cavity 110 and accommodate the third cavity 130 of wiring board 604, case 300 is corresponded in the first cavity 110 and third chamber Position between body 130 is equipped with second partition 102, and the inserted link 310 is arranged on second partition 102;In third cavity 130 Side is equipped with the wire connection cavity 602 for accommodating wire connection terminal 601, and the opposite side of third cavity 130 is led equipped with what is connect with breaker Line is externally provided with the protective cover 605 of shield wires in housing.
Optionally, the mounting portion 421 is L-shaped, including the first mounting portion 4211 for being connect with contact site 422 and The second mounting portion 4212 being connect with the first mounting portion 4211, the first mounting portion 4211 are vertically arranged with the second mounting portion 4212; The fixed plate component 210 includes the fixed plate 240 of U-shaped, and fixed plate 240 includes 241 He of the first fixed plate being oppositely arranged Second fixed plate 242 and the third fixed plate 243 being fixedly connected with the first fixed plate 241 and 242 one end of the second fixed plate, Third fixed plate 243 forms the first fixing groove 231 for fixing the first mounting portion 4211 with 11 inner wall of test chamber, solid second Side of the fixed board 242 far from the first fixed plate 241 is equipped with the 4th fixed plate 244, the 4th fixed plate 244 and the second fixed plate 242 surround the second fixing groove 232 for fixing the second mounting portion 4212;Second fixed plate, 242 and the 4th fixed plate 244 It is connected by the 5th fixed plate 245, the 5th fixed plate 245 and the first fixed plate 241 and the side wall of 11 opposite side of test chamber are matched Close fixed quiet shrapnel 410.
Optionally, the side of second fixed plate 242 towards 244 side of the 4th fixed plate is equipped with fastening protrusion 212, The padded boss 213 being connected between 212 and the 4th fixed plate 244 of fastening protrusion is equipped on 200 inner wall of pedestal.
Optionally, first fixed plate 241, the second fixed plate 242, third fixed plate 243,244 and of the 4th fixed plate 5th fixed plate 245 is equipped with guiding surface 246 on the side close to spring plate.
The mechanism for testing of the mechanism for testing of the earth leakage circuit breaker of the utility model on case 300 by setting and admittedly Determine 230 corresponding inserted link 310 of slot, closed case 300 is covered to during on pedestal 200, by inserted link 310 by mounting portion Precalculated position in 421 push-in fixing grooves 230, ensures that mounting portion 421 is installed in place, and after mounting can also be to mounting portion 421 limitings are not required to increase additional step, and an action completes the multinomial fittage of housing and mechanism for testing, not only protects The consistency of quality has been demonstrate,proved, has in turn ensured the efficiency of assembling.In addition, the inner wall of test chamber 11 is in the position of corresponding fixing groove 230 It is equipped with the guide groove 220 coordinated with inserted link 310.Guide groove 220 provides guiding function when can be moved for inserted link 310, ensures Inserted link 310 and the precision of spring plate cooperation, can also play the position-limiting action between pedestal 200 and case 300.In addition, solid Determine to be equipped with fastening protrusion 212 and padded boss 213 in slot 230, can fastening protrusion 212 can improve fixation to spring plate Effect, and reduce assembly difficulty.
Description of the drawings
Fig. 1 is a kind of embodiment of the utility model;
Fig. 2 is the structure diagram of the utility model pedestal;
Fig. 3 is the structure diagram of the utility model case;
Fig. 4 is the sectional view of the utility model housing;
Fig. 5 is the partial enlarged view of Fig. 4;
Fig. 6 is the partial enlarged view of Fig. 2;
Fig. 7 is the structure diagram of the utility model indicator.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 7 provides, the survey of the earth leakage circuit breaker of the utility model is further illustrated The specific embodiment of test-run a machine structure.The mechanism for testing of the earth leakage circuit breaker of the utility model is not limited to retouching for following embodiment It states.
As shown in Figs. 1-3, the mechanism for testing of the earth leakage circuit breaker of the utility model includes pedestal 200 and case 300 Wiring board 604, magnetic flow convertor 603 and mechanism for testing are equipped in the housing of composition, the survey for accommodating mechanism for testing is equipped in housing Chamber 11 is tried, mechanism for testing includes spaced quiet shrapnel 410 and spring plate, and the spring plate includes integrally formed mounting portion 421 and contact site 422, pedestal 200 is equipped with fixed plate component 210 in the side of test chamber 11, and fixed plate component 210, which is equipped with, to be used Fixing groove 230 in fixed installation portion 421, case 300 is equipped with can incite somebody to action with 230 corresponding inserted link 310 of fixing groove, inserted link 310 Mounting portion 421 is pushed into the predetermined installation site in fixing groove 230.Quiet shrapnel 410 and spring plate are respectively connected to test loop, survey Test specimen 401 can push contact site 422 to be bent in test chamber 11 and be contacted with quiet shrapnel 410, and survey is generated with continuity test circuit Can trial signal in time be disconnected electric circuit when leaking electricity with testing tripping mechanism.
For the device for switching that internal structure is excessively compact, during spring plate is installed, due to the volume of spring plate Also it is smaller, it is possible that spring plate installs situation not in place, it is thus possible to mechanism for testing can be caused to fail, this practicality is new Type is closed case 300 is being covered to the mistake on pedestal 200 by the setting on case 300 and 230 corresponding inserted link 310 of fixing groove Mounting portion 421 is pushed into the precalculated position in fixing groove 230 by inserted link 310 by Cheng Zhong, ensures that mounting portion 421 is installed in place, and And mounting portion 421 can also be limited after mounting, it is not required to increase additional step, an action completes housing and test machine The multinomial fittage of structure, not only ensure that the consistency of quality, in turn ensure the efficiency of assembling.
Further, the side wall of the fixing groove 230 is equipped with fastening protrusion 212, fastening protrusion 212 and mounting portion 421 Mating surface is cambered surface, and the fixed effect to spring plate can be improved by fastening protrusion 212.
Further, the bottom of the fixing groove 230 is equipped with padded boss 213, and padded boss 213 is arranged on fastening protrusion The highest point of 212 protrusions, is coordinated with mounting portion 421 by padded boss 213, can reduce the assembly difficulty of spring plate.This reality It can be arranged in independent breaker with the mechanism for testing of novel earth leakage circuit breaker, earth leakage protective can also be arranged on In unit, residual current protective unit interpolation is attached on breaker, forms earth leakage circuit breaker.
A kind of embodiment as shown in Fig. 1,3, the residual current protective unit equipped with mechanism for testing, the shell of residual current protective unit Body is installed on breaker, and residual current protective unit is connect with circuit breaker electric and the drive shaft and breaker operator of residual current protective unit The release lever connection of mechanism, be equipped in the housing the first cavity 110 for accommodating mechanism for testing and magnetic flow convertor 603 and The third cavity 130 of wiring board 604 and conducting wire is accommodated, case 300 is corresponded between the first cavity 110 and third cavity 130 Position is equipped with second partition 102, and the inserted link 310 is arranged on second partition 102.
Further, the housing is equipped with the wire connection cavity 602 for accommodating wire connection terminal 601 in 130 side of third cavity, the The opposite side of three cavitys 130 is equipped with the conducting wire for connecting breaker, and the protective cover 605 of shield wires is externally provided in housing;Institute State the side that mechanism for testing is arranged on magnetic flow convertor 603, side of the magnetic flow convertor 603 far from mechanism for testing be equipped with The push rod 606 that magnetic flow convertor 603 coordinates and the indicator 607 coordinated with push rod 606, can be with by pressing indicator 607 Can detection drive other device for switching separating brakes.
As illustrated in figures 4-5, the inner wall of the test chamber 11 is equipped on the position of corresponding fixing groove 230 and matches with inserted link 310 The guide groove 220 of conjunction.Guide groove 220 provides guiding function when can be moved for inserted link 310, ensure that inserted link 310 is matched with spring plate The precision of conjunction can also play the position-limiting action between pedestal 200 and case 300.
Further, the length of 310 radial direction of inserted link is more than the thickness of spring plate, and the alignment of inserted link 310 can be convenient for dynamic Shrapnel.Certainly this is a kind of preferred embodiment, and the length of 310 radial direction of inserted link might be less that or the thickness equal to spring plate Degree.
Further, the case 300 to pedestal 200 cover close when the direction of motion perpendicular to the movement side of contact site 422 To that is, the direction of motion of inserted link 310 is perpendicular to the direction of motion of contact site 422.
A kind of specific embodiment as shown in Figure 6, the mounting portion 421 is L-shaped, including being connect with contact site 422 The first mounting portion 4211 and the second mounting portion 4212 for being connect with the first mounting portion 4211, the first mounting portion 4211 and Two mounting portions 4212 are vertically arranged;The fixed plate component 210 includes the fixed plate 240 of U-shaped, and fixed plate 240 includes opposite It first fixed plate 241 of setting and the second fixed plate 242 and is fixed with the first fixed plate 241 and 242 one end of the second fixed plate The third fixed plate 243 of connection, third fixed plate 243 and 11 inner wall of test chamber formed for fix the first mounting portion 4211 the One fixing groove 231 is equipped with the 4th fixed plate 244 in side of second fixed plate 242 far from the first fixed plate 241, and the 4th fixes 244 and second fixed plate 242 of plate surrounds the second fixing groove 232 for fixing the second mounting portion 4212.
Further, second fixed plate 242 is connect with the 4th fixed plate 244 by the 5th fixed plate 245, and the 5th is solid 245 and first fixed plate 241 of fixed board and the fixed quiet shrapnel 410 of side wall cooperation of 11 opposite side of test chamber.
Further, the side of second fixed plate 242 towards 244 side of the 4th fixed plate is equipped with fastening protrusion 212, the padded boss 213 being connected between 212 and the 4th fixed plate 244 of fastening protrusion is equipped on 200 inner wall of pedestal.
Further, first fixed plate 241, the second fixed plate 242, third fixed plate 243, the 4th fixed plate 244, 5th fixed plate 245 and fastening protrusion 212 are equipped with guiding surface 246 on the side close to spring plate, pass through guiding surface 246 It can be convenient for assembling spring plate, reduce assembly difficulty.
As shown in fig. 7, magnetic flow convertor 603 is equipped in the housing, in one of magnetic flow convertor 603 far from mechanism for testing Side is equipped with the push rod 606 coordinated with magnetic flow convertor 603 and the indicator 607 coordinated with push rod 606;The push rod 606 wraps Integrally formed pivot part 6061 and the swing part 6062 rotated around pivot part 6061 are included, is equipped with and swing on pedestal 200 6062 matched push rod guide groove of portion, push rod 606 stretch out push rod guide groove and are inserted into breaker, drive circuit breaker tripping; The indicator 607 includes the driving portion 6072 for reaching the operation portion 6071 of hull outside and coordinating with swing part 6062, Magnetic flow convertor 603 drive by push rod 606 drive circuit breaker tripping while, push rod 606 drive indicator 607 stretch out with Indicating operating status, pressing indicator 607 can drive breaker and reset, breaker that can just close again by push rod 606 again Lock.
Further, the pivot part 6061 is equipped with the pivot 6063 that is pivotally connected with housing, and the one of swing part 6062 End is equipped with the mounting hole 6064 coordinated with the dynamic iron core 6031 of magnetic flow convertor 603, and the other end is equipped with the connection coordinated with breaker Lever 6065 is equipped with the driver slot 6066 coordinated with the driving portion 6072 of indicator 607, driver slot at the middle part of swing part 6062 The shutter 6067 coordinated with housing is equipped between 6066 and interlocking bar 6065;Driver slot is stretched into one end of the driving portion 6072 Coordinate in 6066, the inner wall of the other end and pedestal 200 coordinates.
The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded To belong to the scope of protection of the utility model.

Claims (10)

1. a kind of mechanism for testing of earth leakage circuit breaker, it is characterised in that:It is formed including pedestal (200) and case (300) Housing, the test chamber (11) for accommodating mechanism for testing is equipped in housing, and mechanism for testing includes spaced quiet shrapnel (410) and moves Shrapnel, the spring plate include integrally formed mounting portion (421) and contact site (422), and pedestal (200) is in test chamber (11) Side is equipped with fixed plate component (210), and fixed plate component (210) is equipped with the fixing groove for portion (421) to be fixedly mounted (230), case (300) is equipped with inserted link (310) corresponding with fixing groove (230), and inserted link (310) can push away mounting portion (421) Enter fixing groove (230).
2. the mechanism for testing of earth leakage circuit breaker according to claim 1, it is characterised in that:The test chamber (11) Inner wall is equipped with the guide groove (220) coordinated with inserted link (310) on the position of corresponding fixing groove (230).
3. the mechanism for testing of earth leakage circuit breaker according to claim 1, it is characterised in that:The fixing groove (230) Side wall be equipped with fastening protrusion (212), the mating surface of fastening protrusion (212) and mounting portion (421) is cambered surface.
4. the mechanism for testing of earth leakage circuit breaker according to claim 3, it is characterised in that:The fixing groove (230) Bottom be equipped with padded boss (213), padded boss (213) is arranged on the highest point of fastening protrusion (212) protrusion.
5. according to the mechanism for testing of any earth leakage circuit breakers of claim 1-4, it is characterised in that:In the housing Equipped with magnetic flow convertor (603), it is equipped with and magnetic flow convertor (603) in side of the magnetic flow convertor (603) far from mechanism for testing The push rod (606) of cooperation and the indicator (607) with push rod (606) cooperation;The push rod (606) includes integrally formed pivot Transfer part (6061) and the swing part (6062) rotated around pivot part (6061), are equipped with and swing part on pedestal (200) (6062) matched push rod guide groove;The indicator (607) including reach hull outside operation portion (6071) and With the driving portion (6072) of swing part (6062) cooperation.
6. the mechanism for testing of earth leakage circuit breaker according to claim 5, it is characterised in that:The pivot part (6061) The pivot (6063) being pivotally connected with housing is equipped with, one end of swing part (6062) is equipped with dynamic with magnetic flow convertor (603) The mounting hole (6064) of iron core (6031) cooperation, the other end is equipped with the interlocking bar (6065) coordinated with breaker, in swing part (6062) middle part is equipped with the driver slot (6066) coordinated with the driving portion (6072) of indicator (607), driver slot (6066) with The shutter (6067) coordinated with housing is equipped between interlocking bar (6065);Driver slot is stretched into one end of the driving portion (6072) (6066) coordinate in, the inner wall of the other end and pedestal (200) coordinates.
7. according to the mechanism for testing of any earth leakage circuit breakers of claim 1-4, it is characterised in that:The housing peace It is attached on breaker, is equipped with the first cavity (110) for accommodating mechanism for testing and magnetic flow convertor (603), Yi Jirong in the housing Receive the third cavity (130) of wiring board (604), case (300) is corresponding between the first cavity (110) and third cavity (130) Position be equipped with second partition (102), the inserted link (310) is arranged on second partition (102);In third cavity (130) Side is equipped with the wire connection cavity (602) for accommodating wire connection terminal (601), and the opposite side of third cavity (130) is equipped with to be connect with breaker Conducting wire, be externally provided with the protective cover (605) of shield wires in housing.
8. according to the mechanism for testing of any earth leakage circuit breakers of claim 1-4, it is characterised in that:The mounting portion (421) it is L-shaped, including the first mounting portion (4211) being connect with contact site (422) and with the first mounting portion (4211) even The second mounting portion (4212) connect, the first mounting portion (4211) are vertically arranged with the second mounting portion (4212);The fixed plate group Fixed plate (240) of the part (210) including U-shaped, fixed plate (240) include the first fixed plate (241) being oppositely arranged and second Fixed plate (242) and the third fixed plate being fixedly connected with the first fixed plate (241) and the second fixed plate (242) one end (243), third fixed plate (243) forms the first fixing groove for fixing the first mounting portion (4211) with test chamber (11) inner wall (231), the 4th fixed plate (244) is equipped in side of the second fixed plate (242) far from the first fixed plate (241), the 4th fixes Plate (244) surrounds the second fixing groove (232) for fixing the second mounting portion (4212) with the second fixed plate (242);Described Two fixed plates (242) are connect with the 4th fixed plate (244) by the 5th fixed plate (245), the 5th fixed plate (245) and first Fixed plate (241) and the fixed quiet shrapnel (410) of side wall cooperation of test chamber (11) opposite side.
9. the mechanism for testing of earth leakage circuit breaker according to claim 8, it is characterised in that:Second fixed plate (242) fastening protrusion (212) is equipped with towards the side of the 4th fixed plate (244) side, the company of being equipped on pedestal (200) inner wall The padded boss (213) being connected between fastening protrusion (212) and the 4th fixed plate (244).
10. the mechanism for testing of earth leakage circuit breaker according to claim 8, it is characterised in that:First fixed plate (241), the second fixed plate (242), third fixed plate (243), the 4th fixed plate (244) and the 5th fixed plate (245) are close The side of spring plate is equipped with guiding surface (246).
CN201721180039.1U 2017-09-14 2017-09-14 The mechanism for testing of earth leakage circuit breaker Active CN207587654U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721180039.1U CN207587654U (en) 2017-09-14 2017-09-14 The mechanism for testing of earth leakage circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721180039.1U CN207587654U (en) 2017-09-14 2017-09-14 The mechanism for testing of earth leakage circuit breaker

Publications (1)

Publication Number Publication Date
CN207587654U true CN207587654U (en) 2018-07-06

Family

ID=62727488

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721180039.1U Active CN207587654U (en) 2017-09-14 2017-09-14 The mechanism for testing of earth leakage circuit breaker

Country Status (1)

Country Link
CN (1) CN207587654U (en)

Similar Documents

Publication Publication Date Title
CN101211728B (en) Earth leakage circuit breaker
CN203787366U (en) Residual current circuit breaker
CN102136401A (en) Miniature circuit breaker with leakage protection function
CN106710975B (en) Plug in circuit breaker
KR20110053193A (en) Ground fault interrupter
RU2012135465A (en) VOLTAGE CIRCUIT BREAKER
CN101958212B (en) Receptacle type residual current circuit breaker
CN207587654U (en) The mechanism for testing of earth leakage circuit breaker
CN101226857A (en) Shunt release with indicated function
CN201532918U (en) Socket-type residual current breaker
CN102509919B (en) Leakage protection socket with inverted wiring protection function
CN103915297B (en) There is the chopper of indicating fault
CN108376631B (en) Small-size 1P+N leakage circuit breaker
CN208460693U (en) A kind of compact electromagnetic dropout type leakage circuit breakers
CN205539113U (en) Three -phase combination formula load switch module
CN101178994B (en) Circuit breaker
CN200990455Y (en) Electricity leakage protection socket with service life terminal detection function
CN208077896U (en) Earth leakage circuit breaker
CN102347175B (en) Electronic releaser for molded case circuit breaker
CN205508740U (en) Electric leakage circuit breaker and electric leakage indicating device thereof
CN213691925U (en) Circuit breaker voltage isolation structure
CN217061946U (en) Earth leakage circuit breaker
CN109900939B (en) Three-phase electric energy meter
CN219370941U (en) Leakage release module
CN212485248U (en) Leakage protection device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant