CN102568948A - Improved circuit breaker - Google Patents

Improved circuit breaker Download PDF

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Publication number
CN102568948A
CN102568948A CN2011104136134A CN201110413613A CN102568948A CN 102568948 A CN102568948 A CN 102568948A CN 2011104136134 A CN2011104136134 A CN 2011104136134A CN 201110413613 A CN201110413613 A CN 201110413613A CN 102568948 A CN102568948 A CN 102568948A
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China
Prior art keywords
fastener
circuit breaker
fixed mount
drives
breaker according
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Granted
Application number
CN2011104136134A
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Chinese (zh)
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CN102568948B (en
Inventor
郑春开
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Kedu Electric Co Ltd
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Kedu Electric Co Ltd
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Priority to CN201110413613.4A priority Critical patent/CN102568948B/en
Publication of CN102568948A publication Critical patent/CN102568948A/en
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Publication of CN102568948B publication Critical patent/CN102568948B/en
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Abstract

The invention relates to an improved circuit breaker. The improved circuit breaker comprises a shell, a circuit protection actuating mechanism, a moving contact, a fixed contact and a fastener mechanism, wherein the circuit protection actuating mechanism is positioned in the shell; the moving contact is matched with the fixed contact; the fastener mechanism comprises a fastener and a driving part which drives the fastener to rotate; a fixed mount is hinged on the fastener, and can drive the fastener to get away from the driving part; a fastener cover is also hinged on the fastener; and the circuit protection actuating mechanism is matched with the fastener cover to drive the fastener to get away from the driving part. The improved circuit breaker has the advantages that: two independent driving elements of the fixed mount and the fastener cover are used for tripping the fastener mechanism, and both the fixed mount and the fastener cover can drive the fastener mechanism to get away, so that the risk of secondary electric arc, which is caused by a reason that the moving contact is separated from the fixed contact at first due to an electrical repulsion force to cause a tripping mechanism not to act, then the moving contact is attached to the fixed contact again to cause the tripping mechanism to act, and the moving contact is separated from the fixed contact again, is avoided.

Description

A kind of improved circuit breaker
Technical field
The present invention relates to a kind of is the circuit breaker that electric wiring, electric equipment provide overload, short-circuit protection, particularly a kind of improved circuit breaker.
Background technology
At present, the kind of circuit breaker is varied, and operation principle also has nothing in common with each other.One type of circuit breaker wherein; Inner adopt circuit protection mechanism such as short circuit current relay, bimetal leaf and the tripping mechanism of the action that matches with these protection mechanisms; And moving contact is located on the tripping mechanism; Take off the mouth mechanism action and then moving contact is separated with fixed contact occurring the corresponding actions of situation such as overload, short circuit in the circuit, driving through circuit protection mechanism, realize the disconnection protection of circuit.
In such circuit breaker, programme element mainly concentrates on the structure that engages/throw off of the relation of being linked and tripping mechanism self of circuit protection mechanism and tripping mechanism.Its syndeton and matching relationship more complicated each other, shortcoming be mostly response actions sensitive inadequately, break down etc. easily.To these shortcomings, existing circuit breaker has proposed some improvement.
The number of patent application of announcing on July 1st, 1998 like State Intellectual Property Office is: CN96116635.5, name are called in the application for a patent for invention open file of " multifunctional miniature circuit breaker "; A kind of multifunctional miniature circuit breaker is disclosed; In the housing that front and rear covers is formed, be provided with, by bimetal leaf, with the push pedal of bimetal leaf interlock and the overload delayed release of forming with the snap close of push pedal interlock; By yoke, on this yoke coil and be located at the short circuit instantaneous release that iron core, spring, push rod in the yoke are formed; By handle, the operating mechanism that is located at connecting rod on the handle, forms, by ionic formula grid sheet be located at the arc control device that the ceramic flash barrier of fixed contact and moving contact both sides is formed with the snap close of connecting rod interlock and tripping, with the push pedal of snap close interlock and lever and spring.
Though the circuit breaker of this scheme has structurally been made improvement, make relatively simple for structure, install and use more convenient.But it is exactly that the contact opening speed is slower that there is shortcoming in this scheme, and fixed contact separates with moving contact and mechanism does not move easy formation secondary and draws electric arc.The overload delayed release is to drive the tripping mechanism action earlier and then drive contact to separate with the overload delayed release; Because stored energy mechanism is except driving the contact apparatus action; Also driven tripping mechanism, energy storage can not transform the kinetic energy of contact fully, and then the contact opening speed is slower; And moving contact with can not drive the tripping mechanism action after fixed contact separates, moving contact bounce-back is easily connected with fixed contact once more and is formed the secondary arcing.
Summary of the invention
In order to solve above-mentioned the problems of the prior art; The present invention provides a kind of improved circuit breaker; On basis simple in structure, easy to use, a kind of fastener mechanism of new structure is provided, remove the tripping mechanism of intermediate link; Directly rely on fixed mount and fastener cover driver part and fastener to throw off; Binding face on fastener and the fixed mount cooperates and then the moving contact that drives on the fixed mount separates with fixed contact fast, and the energy of stored energy mechanism changes into the kinetic energy of moving contact to a greater degree, and separating of moving contact and fixed contact is quicker; Avoided the moving contact bounce-back to connect the danger that forms the secondary arcing with fixed contact once more.
The main technical schemes that the present invention adopts is: a kind of improved circuit breaker; Comprise housing, be positioned at the circuit protection actuating mechanism of said housing, the moving contact that cooperatively interacts and fixed contact and arc-control device; Also comprise fastener mechanism, said fastener mechanism comprises fastener and drives the driver part that said fastener rotates; Be hinged with fixed mount on the said fastener, said moving contact is located on the said fixed mount, and said fixed mount can drive said fastener and said driver part is thrown off; Also be hinged with the fastener cover on the said fastener, said circuit protection actuating mechanism matches with said fastener cover and drives said fastener and the disengagement of said driver part.
The present invention also adopts following attached technical scheme:
Said fastener and said fixed mount are articulated in first bearing pin, and said fixed mount is provided with hinge hole one, and said fastener is provided with hinge hole two, and said first bearing pin passes hinge hole one and hinge hole two.
There is one to be elliptical aperture in said hinge hole one and the hinge hole two.
Be provided with and flexible member one between said fastener and the said fixed mount, said fixed mount inboard also is provided with binding face, and said flexible member one drives said fixed mount and clockwise rotates around first bearing pin, drives said binding face and said fastener and fits.
Also be provided with first pressure section that drives said driver part and the disengagement of said fastener on the said fixed mount.
Said fastener and said fastener cover are articulated in second bearing pin.
Be provided with flexible member two between said fastener and the said fastener cover, also be provided with roof pressure portion on the said fastener cover, said flexible member two drives said fastener cover and clockwise rotates around second bearing pin, drives said roof pressure portion and said circuit protection actuating mechanism and fits.
Said fastener cover is provided with second pressure section that drives said driver part and the disengagement of said fastener.
Said first pressure section is an inclined-plane, and said second pressure section is an inclined-plane.
Said fastener is through on the hinged and said housing of said first bearing pin, and said fastener is provided with breach.
Said driver part comprises knob and the connecting rod that is articulated on the housing, and an end of said connecting rod is hinged with knob, the other end cooperates with the breach that said fastener is provided with; Said knob drives said fastener through connecting rod and clockwise rotates.
Be provided with a reset tension spring in the said housing, the reset terminal of said reset tension spring is connected with said fastener, and the other end is fixed on the said housing.
Said circuit protection actuating mechanism comprises short circuit current relay and bimetal leaf; Said roof pressure portion is corresponding with said short circuit current relay; Be provided with a groove in the said housing; Being provided with in the said groove can be along the drive link of said groove slide relative, and said drive link one end matches with said roof pressure portion, and said drive link one end matches with bimetal leaf.
Said short circuit current relay pack vinculum circle, spring and lance, said roof pressure portion is corresponding with said lance.
The beneficial effect that adopts the present invention to bring: at first; The present invention is adopting fastener mechanism to replace tripping mechanism in the past; Save the intermediate link of tripping mechanism, knob further drives fastener through connecting rod and rotates, and then drives moving contact applying fixed contact through flexible member; Avoided the loss of middle tripping mechanism energy, the separation of the moving contact of circuit breaker is fast and reliable more, and then secure more safely to the protection of circuit.Secondly, the dropout of contacting piece of the present invention mechanism is provided with fixed mount and fastener cover two big drive elements, when situation appears in circuit; Difference according to the circuital current size; No matter be the action earlier of circuit protection actuating mechanism, or moving contact is because of electric repulsion separates with fixed contact earlier, all can drive fastener mechanism and throw off; Avoided moving contact not move because of electric repulsion separates tripping mechanism with fixed contact earlier; And then cause moving contact fit once more fixed contact then tripping mechanism action moving contact separate the danger that forms secondary arc once more with fixed contact, circuit breaker has increased dual fail-safe to the protection of the particularly big short circuit current faulty circuit of circuit, circuit breaker is more safe and reliable.Once more, the present invention is set to rectangular groove at the recessed hinge of fixed mount and fastener, and then realizes that moving contact is except around the hinge rotation of fixed mount and fastener; Can also wind perpendicular to hinge axes along rectangular groove direction around fixed mount and fastener; Eliminated in production, installation and use, moving contact and the fixed contact incomplete hidden danger of fitting increases the reliability that moving contact contacts with fixed contact; Prolonged useful life, circuit breaker is lasting more reliable to the protection of safety.
Description of drawings
Fig. 1 is in the internal structure sketch map under the off-state for the present invention.
Fig. 2 is in the internal structure sketch map under the closure state for the present invention.
Fig. 3 removes the internal structure sketch map under the off-state behind the housing for the present invention.
Fig. 4 removes the internal structure sketch map under the closure state behind the housing for the present invention.
Fig. 5 illustrates the structure of each parts for the parts of circuit breaker of the present invention split sketch map.
Fig. 6 is the overall structure figure of fastener mechanism of the present invention.
Fig. 7 does not dissect structure chart under the disengaged condition for fastener mechanism of the present invention.
Fig. 8 does not dissect structure chart under the disengaged condition for fastener mechanism another kind of the present invention.
Fig. 9 is the structure chart that dissects under the fastener mechanism disengaged condition of the present invention.
Figure 10 is the enlarged drawing of A among Fig. 9.
Figure 11 is the structure chart that dissects under the another kind of disengaged condition of fastener mechanism of the present invention.
Figure 12 is the enlarged drawing of B among Figure 11.
Figure 13 splits sketch map for the parts of fastener mechanism of the present invention.
Figure 14 splits sketch map for the parts under another visual angle of fastener mechanism of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description:
Referring to Fig. 1 to Figure 12; According to a kind of improved circuit breaker provided by the invention; Comprise housing 1, be positioned at the circuit protection actuating mechanism of said housing 1, the moving contact 3 that cooperatively interacts and fixed contact 2 and arc-control device 4; Also comprise fastener mechanism, said fastener mechanism comprises fastener 5 and drives the driver part that said fastener 5 rotates; Be hinged with fixed mount 7 on the said fastener 5, said moving contact 2 is located on the said fixed mount 7, and said fixed mount 7 can drive said fastener 5 and throw off with said driver part; Also be hinged with fastener cover 6 on the said fastener 5, said circuit protection actuating mechanism matches with said fastener cover 6 and drives said fastener 5 and said driver part disengagement.
Referring to Fig. 5 to Fig. 9; In the foregoing description provided by the invention, said fastener 5 is articulated in first bearing pin 16 with said fixed mount 7, and said fixed mount 7 is provided with hinge hole 1; Said fastener 5 is provided with hinge hole 2 51, and said first bearing pin 16 passes hinge hole 1 and hinge hole 2 51.There is one to be elliptical aperture in said hinge hole 1 and the hinge hole 2 51.Be provided with and flexible member 1 between said fastener 5 and the said fixed mount 7; Said fixed mount 7 inboards also are provided with binding face 72; Said flexible member 1 drives said fixed mount 7 and clockwise rotates around first bearing pin 16, drives said binding face 72 and fits with said fastener 5.Also be provided with first pressure section 73 that drives said driver part and 5 disengagements of said fastener on the said fixed mount 7.The design of above-mentioned elliptical aperture makes fixed mount 7 under flexible member one 8 effects, can rotate along said hinge hole 1 or vertical first bearing pin of hinge hole 2 51 elliptical aperture directions.
Referring to Fig. 5 to Figure 11, in the foregoing description provided by the invention, said fastener 5 is articulated in second bearing pin 17 with said fastener cover 6.Be provided with flexible member 2 18 between said fastener 5 and the said fastener cover 6; Also be provided with roof pressure portion 62 on the said fastener cover 6; Said flexible member 2 18 drives said fastener cover 6 and clockwise rotates around second bearing pin 17, drives said roof pressure portion 62 and said circuit protection actuating mechanism and fits.Said fastener cover 6 is provided with second pressure section 61 that drives said driver part and 5 disengagements of said fastener.
Referring to Fig. 7 to Figure 14, in the foregoing description provided by the invention, said first pressure section 73 is an inclined-plane, and said second pressure section 61 is an inclined-plane.Said fastener 5 is through on said first bearing pin, the 16 hinged and said housings 1, and said fastener 5 is provided with breach 52.
Said driver part comprises the knob 9 and connecting rod 10 that is articulated on the housing 1, and an end of said connecting rod 10 is hinged with knob 9, the other end cooperates with the breach 52 that said fastener 5 is provided with; Said knob 9 drives said fastener 5 through connecting rod 10 and clockwise rotates.
Be provided with a reset tension spring 12 in the said housing 1, the reset terminal of said reset tension spring 12 is connected with said fastener 5, and the other end is fixed on the said housing 1.
Referring to Fig. 1 to Fig. 5; In the foregoing description provided by the invention, said circuit protection actuating mechanism comprises short circuit current relay 12 and bimetal leaf 13, and said roof pressure portion 62 is corresponding with said short circuit current relay 12; Be provided with a groove 19 in the said housing 1; Being provided with in the said groove 19 can be along the drive link 14 of said groove 19 slide relative, and said drive link 14 1 ends match with said roof pressure portion 62, and said drive link 14 1 ends match with bimetal leaf 13.
Referring to Fig. 3 to Fig. 5, in the foregoing description provided by the invention, said short circuit current relay 12 comprises coil 121, spring 122 and lance 123, and said roof pressure portion 62 is corresponding with said lance 123.
Do a detailed description in the face of the operation principle of circuit breaker provided by the invention with process closed, that throw off down:
As shown in Figure 3, be circuit breaker off-state figure, in this STA representation circuit the automatic disconnection for protective circuit situation such as short circuit, overload, overcurrent appears.When circuit recovers normal; When needing close circuit breaker; Manual operation knob 9 clockwise rotates; Knob 9 promotes the breach 52 on the fastener 5 through connecting rod 10 fore-ends that are hinged with it in knob 9 rotating process, makes fastener 5 clockwise rotate around first bearing pin 16, and then promotes fastener cover 6 clockwise rotates driving roof pressure portion 62 and short circuit electromagnetic relay around second bearing pin 17 lance 123 applyings.As shown in Figure 8, also promote fixed mount 7 clockwise rotates drive fixing frame 7 inboards around first bearing pin 16 binding faces 72 and fasteners 5 applyings simultaneously.Meanwhile, the moving contact 3 on the fixed mount 7 is fitted in applying back, fixed contact 2, two contacts knob 9 and is rotated further certain distance, makes interlock button spring 15 be in the compression stress, and purpose is the power increase that moving contact 3 and fixed contact 2 are fitted.So far, knob 9 is accomplished whole rotation process, makes circuit breaker be in closure state.Reset tension spring 11 energy stored major parts are converted into the kinetic energy of moving contact 3, have avoided the loss of middle tripping mechanism energy, and the separation of the moving contact 3 of circuit breaker is fast and reliable more, and then secure more safely to the protection of circuit.
As shown in Figure 4, be the breaker closing state diagram, this STA representation circuit is in closed conducting state.When occurring situation such as short circuit, overload, overcurrent in the circuit, short circuit electromagnetic relay 12 or bimetal leaf 13 responses are moved.Concrete: the lance 123 in the short circuit electromagnetic relay 12 ejects; Roof pressure portion 62 with on the fastener cover 6 that it leans mutually rotates counterclockwise around second bearing pin 17, and second pressure section 61 that drives in the roof pressure portion 62 rotates counterclockwise; Second pressure section 61 will be stuck in 10 releases of the connecting rod in the breach 52 on the fastener 5; And then make fastener 5 under the effect of reset tension spring 11, rotate counterclockwise around first bearing pin 16, as shown in Figure 7, in this process; Because the binding face 72 of the fixed mount 7 that fastener 5 is hinged is fitted with fastener 5, makes fixed mount 7 follow fastener 5 and rotates counterclockwise around first bearing pin 16.Make the moving contact 3 that is fixed on the fixed mount 7 separate with fixed contact 2; Or bimetal leaf 13 heated bendings; Drive the drive link 14 that matches with it and move right, simultaneously, stir the roof pressure portion 62 that matches with it and rotate counterclockwise; Make second pressure section 61 rotate counterclockwise; The connecting rods 10 that are stuck in the breach on the fastener 5 52 are released, and then made fastener 5 under the effect of reset tension spring 11, rotate counterclockwise, separate with fixed contact 2 to moving contact 3 around first bearing pin 16.Simultaneously, knob 9 rotates counterclockwise under the effect of interlock button spring 15 and resets to the position of breaking off retaining.So far, whole disconnection process is accomplished.Above-mentioned fixed mount 7 is two big drive elements of the dropout of fastener mechanism with fastener cover 6; When situation appears in circuit; Difference according to the circuital current size; No matter be the action earlier of circuit protection actuating mechanism, or moving contact 3 is because of electric repulsion separates with fixed contact 2 earlier, all can drive fastener 5 mechanisms and throw off; Avoided moving contact 3 not move because of electric repulsion separates tripping mechanism with fixed contact 2 earlier; And then cause moving contact 3 fit once more fixed contact 2 then tripping mechanism action moving contact 3 separate the danger that forms secondary arc once more with fixed contact 2, the circuit breaker that is arranged so that of fixed mount and fastener cover has increased dual fail-safe to the protection of the particularly big short circuit current faulty circuit of circuit, circuit breaker is more safe and reliable.

Claims (14)

1. improved circuit breaker; Comprise housing (1), be positioned at the circuit protection actuating mechanism of said housing (1), the moving contact (3) that cooperatively interacts and fixed contact (2) and arc-control device (4); It is characterized in that: also comprise fastener mechanism, said fastener mechanism comprises fastener (5) and drives the driver part that said fastener (5) rotates; Be hinged with fixed mount (7) on the said fastener (5), said moving contact (2) is located on the said fixed mount (7), and said fixed mount (7) can drive said fastener (5) and said driver part is thrown off; Also be hinged with fastener cover (6) on the said fastener (5), said circuit protection actuating mechanism matches with said fastener cover (6) and drives said fastener (5) and the disengagement of said driver part.
2. circuit breaker according to claim 1; It is characterized in that: said fastener (5) is articulated in first bearing pin (16) with said fixed mount (7); Said fixed mount (7) is provided with hinge hole one (71); Said fastener (5) is provided with hinge hole two (51), and said first bearing pin (15) passes hinge hole one (71) and hinge hole two (51).
3. circuit breaker according to claim 2 is characterized in that: have one to be elliptical aperture in said hinge hole one (71) and the hinge hole two (51).
4. circuit breaker according to claim 1; It is characterized in that: be provided with and flexible member one (8) between said fastener (5) and the said fixed mount (7); Said fixed mount (7) inboard also is provided with binding face (72); Said flexible member one (8) drives said fixed mount (7) and clockwise rotates around first bearing pin (16), drives said binding face (72) and fits with said fastener (5).
5. circuit breaker according to claim 1 is characterized in that: also be provided with first pressure section (73) that drives said driver part and said fastener (5) disengagement on the said fixed mount (7).
6. circuit breaker according to claim 1 is characterized in that: said fastener (5) is articulated in second bearing pin (17) with said fastener cover (6).
7. circuit breaker according to claim 1; It is characterized in that: be provided with flexible member two (18) between said fastener (5) and the said fastener cover (6); Also be provided with roof pressure portion (62) on the said fastener cover (6); Said flexible member two (18) drives said fastener cover (6) and clockwise rotates around second bearing pin (16), drives said roof pressure portion (62) and fits with said circuit protection actuating mechanism.
8. circuit breaker according to claim 1 is characterized in that: said fastener cover (6) is provided with second pressure section (61) that drives said driver part and said fastener (5) disengagement.
9. according to claim 5 or 8 any described circuit breakers, it is characterized in that: said first pressure section (73) is an inclined-plane, and said second pressure section (61) is an inclined-plane.
10. circuit breaker according to claim 1 is characterized in that: said fastener (5) is through on the hinged and said housing of said first bearing pin (16) (1), and said fastener (5) is provided with breach (52).
11. circuit breaker according to claim 1; It is characterized in that: said driver part comprises knob (9) and the connecting rod (10) that is articulated on the housing (1), and an end of said connecting rod (10) is hinged with knob (9), the other end cooperates with the breach (52) that said fastener (5) is provided with; Said knob (9) drives said fastener (5) through connecting rod (10) and clockwise rotates.
12. circuit breaker according to claim 1 is characterized in that: be provided with a reset tension spring (12) in the said housing (1), the reset terminal of said reset tension spring (12) is connected with said fastener (5), and the other end is fixed on the said housing (1).
13. circuit breaker according to claim 1; It is characterized in that: said circuit protection actuating mechanism comprises short circuit current relay (12) and bimetal leaf (13); Said roof pressure portion (62) is corresponding with said short circuit current relay (12); Be provided with a groove (19) in the said housing (1); Being provided with in the said groove (19) can be along the drive link (14) of said groove (19) slide relative, and said drive link (14) one ends match with said roof pressure portion (62), and said drive link (14) one ends match with bimetal leaf (13).
14. circuit breaker according to claim 13 is characterized in that: said short circuit current relay (12) comprises coil (121), spring (122) and lance (123), and said roof pressure portion (62) is corresponding with said lance (123).
CN201110413613.4A 2011-12-13 2011-12-13 Improved circuit breaker Active CN102568948B (en)

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CN102568948B CN102568948B (en) 2014-06-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124080A (en) * 2014-07-14 2014-10-29 二一三电器(上海)有限公司 Terminal distributing apparatus universal structure and use method thereof
CN105575740A (en) * 2016-03-14 2016-05-11 乐清市沃斯托电气有限公司 Circuit breaker
CN104124080B (en) * 2014-07-14 2017-01-04 二一三电器(上海)有限公司 A kind of using method of terminal power distribution electric appliance general structure
CN108878209A (en) * 2018-09-03 2018-11-23 厦门大恒科技有限公司 A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism
CN112002622A (en) * 2020-08-27 2020-11-27 厦门恒锋力电子有限公司 Miniature circuit breaker

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CN201112303Y (en) * 2007-09-27 2008-09-10 温州奥来电器有限公司 Accumulated energy type high subsection small circuit breaker
CN101677049A (en) * 2008-09-19 2010-03-24 郑春开 Improved circuit breaker
CN101923987A (en) * 2009-06-09 2010-12-22 浙江科都电气制造有限公司 Improved breaker
CN101930883A (en) * 2010-09-16 2010-12-29 方华朋 Small-sized breaker
CN202423168U (en) * 2011-12-13 2012-09-05 科都电气有限公司 Improved circuit breaker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1585064A (en) * 2004-05-25 2005-02-23 Tcl国际电工(无锡)有限公司 Small circuit breaker
CN201112303Y (en) * 2007-09-27 2008-09-10 温州奥来电器有限公司 Accumulated energy type high subsection small circuit breaker
CN101677049A (en) * 2008-09-19 2010-03-24 郑春开 Improved circuit breaker
CN101923987A (en) * 2009-06-09 2010-12-22 浙江科都电气制造有限公司 Improved breaker
CN101930883A (en) * 2010-09-16 2010-12-29 方华朋 Small-sized breaker
CN202423168U (en) * 2011-12-13 2012-09-05 科都电气有限公司 Improved circuit breaker

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124080A (en) * 2014-07-14 2014-10-29 二一三电器(上海)有限公司 Terminal distributing apparatus universal structure and use method thereof
CN104124080B (en) * 2014-07-14 2017-01-04 二一三电器(上海)有限公司 A kind of using method of terminal power distribution electric appliance general structure
CN105575740A (en) * 2016-03-14 2016-05-11 乐清市沃斯托电气有限公司 Circuit breaker
CN105575740B (en) * 2016-03-14 2018-06-05 乐清市沃斯托电气有限公司 Breaker
DE112016001398B4 (en) 2016-03-14 2023-12-14 Yueqing Onesto Electric Co., Ltd. Circuit breaker
CN108878209A (en) * 2018-09-03 2018-11-23 厦门大恒科技有限公司 A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism
CN112002622A (en) * 2020-08-27 2020-11-27 厦门恒锋力电子有限公司 Miniature circuit breaker
CN112002622B (en) * 2020-08-27 2023-01-03 厦门恒锋力电子有限公司 Miniature circuit breaker

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Address after: 325608 Puqi Industrial Zone, Hongqiao Town, Leqing City, Wenzhou City, Zhejiang Province

Patentee after: Kedu Electric Co.,Ltd.

Address before: 325608 Block C, Puqi Industrial Zone, Hongqiao Town, Yueqing City, Wenzhou City, Zhejiang Province

Patentee before: KEDU ELECTRIC Co.,Ltd.

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