CN102129941A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN102129941A CN102129941A CN2010102685698A CN201010268569A CN102129941A CN 102129941 A CN102129941 A CN 102129941A CN 2010102685698 A CN2010102685698 A CN 2010102685698A CN 201010268569 A CN201010268569 A CN 201010268569A CN 102129941 A CN102129941 A CN 102129941A
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- CN
- China
- Prior art keywords
- chain shot
- lock part
- circuit
- plunger
- breaker
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/505—Latching devices between operating and release mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
A task of the invention is to settle easy arcing and circuit breaking performance if tripping circuit breaking time of a switch mechanism in a circuit breaker is longer and a movable contactor gets next to a contactor through the force generated by a compressed spring in a plunger and a reset spring of the movable contactor after the movable contactor is tripped compulsively through the plunger. The invention provides a circuit breaker which is composed of the following components: a plunger (31), an insulation rod (32), a movable contactor (4) which is provided with a movable contact (4b), a fixed contactor which is provided with a fixed contact (3b), a transverse rod, a pressure spring, a locking part, a latch, and a toggle rod mechanism, which form an instantaneous tripping part of the movable contactor. When the plunger (31) drives, through the impact between the locking part (21) and the latch (22), the rotation speed of the latch (22) is increased thereby shortening the tripping short-circuit time of the whole mechanism.
Description
Technical field
The present invention relates to a kind of circuit-breaker, especially, relate to a kind of switching mechanism portion of circuit-breaker.
Background technology
Switching mechanism portion as circuit-breaker, for example in the existing circuit-breaker that patent documentation 1 is put down in writing, the solenoid of movable contact tripping operation is made of coil and plunger, flow through in the coil as short circuit current more than or equal to the electric current of specified several times the time, action by solenoid part, one end of plunger at first drives the tripping operation part, the connecting rod disengaging that makes the chain shot connecting rod and linked, thus movable contact is forced tripping operation.Because chain shot breaks away from advance, so linkage portion moves, is positioned at the action of off position by making movable contact, finishes the action of opening circuit.
Patent documentation 1: Japanese Patent Publication 59-42938 communique (the 2-3 page or leaf, Fig. 1)
Summary of the invention
Switching mechanism portion is the traveling time of tripping operation part, chain shot connecting rod, the connecting rod that linked at trip whole time of opening circuit, the breaking time of definite switching mechanism such as the moment of inertia by each parts, quality, back-moving spring power portion.In the structure of the switching mechanism portion of above-mentioned existing circuit-breaker, with respect to making movable contact force the time of tripping operation, significantly postpone the breaking time of linkage portion.Therefore, because after utilizing plunger to make movable contact force tripping operation, if the current vanishes of actuation plunger, then the confining force to movable contact that is produced by plunger disappears, the power that back-moving spring by compression spring in the plunger and movable contact produces, make movable contact near fixed contact therefor, be easy to generate reignition of arc, so produce the problem that opening performance reduces.
The present invention proposes in order to solve above-mentioned problem, and its purpose is to obtain a kind of circuit-breaker, the breaking time when it shortens tripping operation, improves opening performance.
Circuit-breaker involved in the present invention, when short interruption, utilize plunger actuation and insulating bar that movable contact is separated after, drive lock part, remove with chain shot between engage after, lock part is contacted with chain shot, apply torque, improve the rotary speed of chain shot thus.
The effect of invention
According to the present invention, can obtain a kind of circuit-breaker, it passes through to improve the rotary speed of chain shot, thereby shortens the breaking time when tripping, and improves opening performance.
Description of drawings
Fig. 1 is the oblique view of the outward appearance of the circuit-breaker in the expression embodiments of the present invention 1.
Fig. 2 is the side cutaway view of the on-state of the circuit-breaker in the expression embodiments of the present invention 1.
Fig. 3 is the profile of the switching mechanism portion that comprises lock part and chain shot of the on-state in the embodiments of the present invention 1.
Fig. 4 is the open circuit profile of the switching mechanism portion that comprises lock part and chain shot of moment of the tripping operation in the embodiments of the present invention 1.
Fig. 5 is the lock part under the on-state of the circuit-breaker in the embodiments of the present invention 1 and the oblique view of chain shot.
Fig. 6 is the open circuit lock part of moment and the oblique view of chain shot of the tripping operation of the circuit-breaker in the embodiments of the present invention 1.
Fig. 7 be illustrated in embodiments of the present invention 1 lock part when rotation not with situation that chain shot contact under, the sequential chart of the action timing of main switching mechanism parts.
Fig. 8 be lock part when rotation that is illustrated in embodiments of the present invention 1 with the situation that chain shot contact under, the main sequential chart of the action of switching mechanism parts timing.
Fig. 9 is the profile of switching mechanism portion, and the on-state of the circuit-breaker in the embodiments of the present invention 1 is shown.
Figure 10 is the profile of switching mechanism portion, and the off-state of the circuit-breaker in the embodiments of the present invention 1 is shown.
Figure 11 is the profile of switching mechanism portion, and the tripped condition of the circuit-breaker in the embodiments of the present invention 1 is shown.
Figure 12 is the profile of switching mechanism portion, and the reset mode of the circuit-breaker in the embodiments of the present invention 1 is shown.
Figure 13 is the open circuit lock part of moment and the profile of chain shot of the tripping operation in the embodiments of the present invention 1.
Figure 14 is the lock part under the reset mode in the embodiments of the present invention 1 and the profile of chain shot.
Figure 15 is the oblique view under the on-state of related lock part of embodiments of the present invention 2 and chain shot bend.
Figure 16 is the oblique view of tripping operation moment of related lock part of embodiments of the present invention 2 and chain shot bend.
Embodiment
Fig. 1 is the oblique view of the outward appearance of the circuit-breaker in the expression embodiments of the present invention 1, Fig. 2 is the side cutaway view of the on-state of the circuit-breaker in the expression embodiments of the present invention 1, Fig. 3 is the profile of the switching mechanism portion that comprises lock part and chain shot of the on-state in the embodiments of the present invention 1, Fig. 4 is the open circuit profile of the switching mechanism portion that comprises lock part and chain shot of moment of the tripping operation in the embodiments of the present invention 1, Fig. 5 is the lock part under the on-state of the circuit-breaker in the embodiments of the present invention 1 and the oblique view of chain shot, and Fig. 6 is the open circuit lock part of moment and the oblique view of chain shot of the tripping operation of the circuit-breaker in the embodiments of the present invention 1.
In Fig. 1, circuit-breaker becomes following structure, that is, covered by resinous lid 1 and resinous pedestal 2, connects distribution on terminal 24, realizes switching manipulation by handle 16.
In Fig. 2, breaker body is covered by resinous lid 1 and resinous pedestal 2, and fixed contact therefor 3 is provided with fixed contact 3a.The movable contact 4 that relatively disposes with fixed contact therefor 3 can be that the center is rotated with pivot point 4a, contacts/separates with fixed contact therefor 3 by rotation.When movable contact 4 contacted with fixed contact therefor 3, the fixed contact 3a that is arranged on the fixed contact therefor 3 contacted with moving contact 4b on being arranged on movable contact 4.Muffler plate 5 is arranged near fixed contact therefor 3 and the movable contact 4, maintaining on the insulation cross bar 6 of movable contact 4, is provided with rotating shaft 6a.The right part combines with insulation cross bar 6 by connecting pin 8 among the figure of lower link 9.Last connecting rod 11 becomes hinge by linking in conjunction with pin 10 and lower link 9 in conjunction with pin 10, constitutes elbow-bar mechanism.
Below, action is described.Under the on-state in Fig. 2, lower link 9 and go up connecting rod 11 and stretch by acting in conjunction with the tensile force on the pin 10 from switch spring so that with the pivot of linking part 13a and the last connecting rod axis that links in conjunction with the central point of pin 10, with the central point of connecting pin 8 and the lower link axis that combines the central point binding of pin 10 are become roughly straight line.In addition, cross bar 6 is that the center is subjected to clockwise revolving force among the figure with rotating shaft 6a, with movable contact 4 by being pressed on the fixed contact therefor 3.
Under on-state shown in Figure 3, if the short circuit current more than or equal to specified several times flows through coil 26, then the magnetic circuit by plunger 31 and yoke 34 makes plunger 31 beginnings right-hand moving in figure, at first by the setting of the plunger 31 T word shape 31b of the portion hook lock part 21 of left end in the drawings, make lock part 21 rotation counterclockwise in figure, then, utilize among the figure of insulating bar 32 right-hand member to push movable contact 4, with movable contact semi-finals system tripping operation.
Then, as shown in Figure 4, when the gap between plunger 31 and yoke 34 disappears, be arranged on lug boss 31a and yoke 34 butts on the plunger 31, plunger 31 right-hand moving in figure stops at this point.On the other hand, movable contact 4 is quickened by plunger 31 via insulating bar 32, compresses the balance of the potential energy that spring 29 put aside when utilizing the kinetic energy of the initial velocity when separating with insulating bar 32 and will compress spring 29 compressions, separates with fixed contact therefor 3.In fact, when producing short circuit current, in the bigger electromagnetic force of plunger 31 last moments generation, the kinetic energy that forms by the translational speed that comprises insulating bar 32, compare very big with the potential energy that stage clip 29 is put aside, the speed moment increase of movable contact 4, speed is separated with fixed contact therefor 3 with reducing hardly.
During this period, lock part 21 and chain shot 22 carry out following actions.Position from Fig. 5, drive lock part 21 by plunger 31 rotations as noted above, lock part 21 and chain shot 22 in the drawings left end engage releasing, after chain shot can freely rotate, rake 21b by lock part 21 contacts with the chain shot pin 22b of chain shot 22, applies the pressure revolving force to chain shot 22 thus.Then, chain shot 22 carries out high speed rotating and becomes state shown in Figure 6.In addition, when above-mentioned contact, chain shot pin 22b enters in the recess that is arranged on the rake 21b.Then, in Fig. 2, by the engage releasing of chain shot holding section 22c with lever 13, lever 13 is clockwise direction rotation among the middle mind-set figure with axle 14, thereby elbow-bar mechanism is bent into L word shape, cross bar 6 rotation counterclockwise in figure is driven, thereby trip action.
More than, in the related circuit-breaker of embodiments of the present invention 1, contact and apply torque with chain shot 22, thereby the rotary speed of chain shot 22 is improved by lock part 21, can shorten the tripping operation operate time of switching mechanism portion.
Below, use Fig. 7 and Fig. 8, be described in detail in the related circuit-breaker of embodiments of the present invention 1, shorten tripping operation this point operate time of switching mechanism portion.Fig. 7 be illustrated in as existing circuit-breaker lock part when rotated not with situation that chain shot contacts under, the sequential chart of the action of main switching mechanism parts example regularly, Fig. 8 be illustrated in embodiments of the present invention 1 lock part when rotated with situation that chain shot contacts under, the sequential chart of the action of main switching mechanism parts example regularly.
As shown in Figure 7, if flow through short circuit current more than or equal to specified several times in coil 26, then the mobile moment of plunger 31 carries out, and the displacement x of plunger 31 changes rapidly between the short-term of Δ t1a=1～2ms.Because moving midway of plunger 31, lock part 21 is driven by plunger 31 rotations, so the anglec of rotation (lock part angle) continues to increase.If lock part 21 rotation, then with chain shot 22 between engage releasing, the anglec of rotation of chain shot 22 (chain shot angle) also continues to increase.If chain shot 22 rotations then utilize the illustrated method in front, make lever 13, elbow-bar mechanism be rotated action, realize the action of opening circuit of cross bar 6, the anglec of rotation of cross bar (cross bar angle) also continues to increase.
Here, before the engaging of chain shot 22 and lever 13 was removed, the elbow-bar mechanism action of not tripping was not carried out opening circuit of cross bar 6.Determine by the moment of inertia of power that is subjected to from lever 13 by switch spring and chain shot 22 breaking time of chain shot 22, here, the rotation deadline of chain shot 22 is Δ t2a=4ms, then, midway above-mentioned, the elbow-bar mechanism action of tripping, its result, the time till opening circuit to cross bar 6 is Δ t3a=8ms.
Therefore, if after lock part 21 rotations, apply revolving force to chain shot 22, the time that chain shot 22 rotations are finished shortens, and accelerated whole breaking time.Appending on the chain shot 22 under the situation of chain shot pin 22b, shown in the explanation of front, will transmit to chain shot 22 from the revolving force of lock part 21.Thus, if the chain shot traveling time shortens to for example Δ t2b=2ms as shown in Figure 8, then in the beginning timing advance of the tripping operation of above-mentioned elbow-bar mechanism midway action, the time till opening circuit to cross bar 6 shortens to Δ t3b=6ms.
Below, the circuit-breaker action of the switching mechanism portion when on-state, off-state, tripped condition, reset mode transfer respectively is described.Fig. 9 is the profile of switching mechanism portion, the on-state of the circuit-breaker in the embodiments of the present invention 1 is shown, Figure 10 is the profile of switching mechanism portion, the off-state of the circuit-breaker in the embodiments of the present invention 1 is shown, Figure 11 is the profile of switching mechanism portion, the tripped condition of the circuit-breaker in the embodiments of the present invention 1 is shown, Figure 12 is the profile of switching mechanism portion, the reset mode of the circuit-breaker in the embodiments of the present invention 1 is shown, Figure 13 is the open circuit lock part of moment and the profile of chain shot of the tripping operation in the embodiments of the present invention 1, and Figure 14 is the lock part under the reset mode in the embodiments of the present invention 1 and the profile of chain shot.
Under on-state shown in Figure 9, shown in the explanation of front, cross bar 6 be subjected to rotating shaft 6a be the center along clockwise revolving force among the figure, with movable contact 4 by being pressed on the fixed contact therefor 3.
Under off-state shown in Figure 10, it is the situation that handle 16 is counterclockwise rotated from on-state to figure, because in conjunction with pin 10 be arranged between the 15b of hook portion on the handle arm 15, set up the switch spring that is used to apply tensile force, so effect by this spring line of force, cross bar 6 is that revolving force is born along counter clockwise direction among the figure in the center with rotating shaft 6a, and movable contact 4 becomes the state that separates with fixed contact therefor 3.
If short circuit current flow under on-state shown in Figure 9, then shown in the explanation of front, by the short circuit current checkout gear that constitutes by coil 26, plunger 31, yoke 34, making lock part 21 is rotation counterclockwise among the middle mind-set figure with axle 21a, thus with chain shot 22 between engage releasing, chain shot 22 beginnings clockwise direction rotation in figure.Then, engage releasing between chain shot 22 and the lever 13, the tensile force by switch spring acts on via last connecting rod 11, thereby lever 13 is clockwise direction rotation among the middle mind-set figure with axle 14.Accompany therewith, last connecting rod 11 and lower link 9 are bent into L word shape at the downside of handle 16, and cross bar 6 counterclockwise is rotated driving in the figure of Fig. 9, become tripped condition shown in Figure 11 (action that this is a series of is generically and collectively referred to as the tripping operation action).
In addition, if from tripped condition shown in Figure 11, gripping handle 16 counterclockwise carries out rotating operation in figure, and then handle arm 15 counterclockwise is driven in figure in the same manner, by the effect of switch spring, lever 13 is counterclockwise to rotate among the middle mind-set figure with axle 14.Then, active force by rotating spring 20, chain shot 22 counterclockwise rotates in figure and returns assigned position, lock part 21 clockwise direction in figure rotates and returns assigned position, lever 13 engages with chain shot 22, chain shot 22 engages with lock part 21, becomes reset mode shown in Figure 12 (homing action).Here, when chain shot 22 counterclockwise rotates in figure, though chain shot pin 22b enters the recess of the rake 21b of lock part 21 as shown in Figure 6, if but carried out homing action, then by the effect of rotating spring 20, lock part 21 would be subjected to revolving force on the clockwise direction in the drawings, chain shot 22 is subjected to revolving force on the counter clockwise direction in the drawings, on this basis, contact with the rake 21b of lock part 21, and become the auxiliary force that makes lock part 21 rotations and apply rotation by chain shot pin 22b.
In addition, chain shot pin 22b and lock part 21b are position shown in Figure 13 relation, and the position that can not interfere when being designed to homing action becomes position relation shown in Figure 14 resetting when finishing.By carrying out above-mentioned action, and carry out the homing action of mechanism,, then become the off-state of Figure 10 if the active force of handle disappears.
If from this off-state, gripping handle 16 and in figure, counterclockwise carry out rotating operation, then switch spring is the boundary with the dead point by last connecting rod axis from bottom to top, the force direction that is erected in conjunction with the switch spring on the pin 10 reverses once more, by wink moving (snap) action that connecting rod and lower link are stretched, with cross bar 6 clockwise direction rotating drive in figure, movable contact 4 by being pressed on the fixed contact therefor 3, is become the on-state of Fig. 9.
According to present embodiment, because when plunger 31 drove, chain shot pin 22b contacted with the rake 21b of lock part 21, improve the rotary speed of chain shot 22, so shorten the tripping operation breaking time of switching mechanism portion integral body, improve opening performance.
Figure 15 is related lock part 21 and the oblique views of chain shot bend under on-state of embodiments of the present invention 2, and Figure 16 is that the related lock part of embodiments of the present invention 2 and chain shot bend are at the tripping operation oblique view of moment.Structure for identical with execution mode 1 marks identical label, omits explanation.
On above-mentioned chain shot 22 bend 22d is set, the chain shot pin 22b of the rake 21b of lock part 21 and chain shot 22 collision can obtain situation identical effect and the effect illustrated as enforcement mode 1.In addition, because bend 22d can be integrally formed by the bending machining of chain shot 22, so can also obtain saving the effect of assembling man-hour, reducing cost of manufacture.
Claims (3)
1. circuit-breaker, it has:
Movable contact, it has moving contact;
Fixed contact, it contacts/separates with described moving contact;
Coil, itself and described fixed contact are electrically connected, and feed electric current;
Plunger, it is driven when feeding short circuit current in described coil;
Insulating bar, it is connected with an end of described plunger, is accompanied by the driving of described plunger and pushes described movable contact, and described movable contact is tripped with respect to described fixed contact;
Lock part, it is accompanied by the driving of described plunger and is driven;
Chain shot, its driving by described lock part remove with described lock part between engage, free to rotate thus;
Elbow-bar mechanism, the engaging of being undertaken by described chain shot is removed in its rotation by described chain shot, thereby drives; And
The insulation cross bar, it is rotated by the actuating force from described elbow-bar mechanism, drives described movable contact,
This circuit-breaker is characterised in that,
When described lock part was accompanied by the driving of described plunger and is driven, described lock part contacted with described chain shot.
2. circuit-breaker according to claim 1 is characterized in that,
The chain shot pin is set on described chain shot, and the part that described lock part contacted is this chain shot pin.
3. circuit-breaker according to claim 1 is characterized in that,
The bend of one is set on described chain shot, and the part that described lock part contacted is this bend.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-009127 | 2010-01-19 | ||
| JP2010009127A JP5333253B2 (en) | 2010-01-19 | 2010-01-19 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102129941A true CN102129941A (en) | 2011-07-20 |
| CN102129941B CN102129941B (en) | 2014-05-07 |
Family
ID=44267984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010268569.8A Active CN102129941B (en) | 2010-01-19 | 2010-08-30 | Circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5333253B2 (en) |
| KR (1) | KR101093850B1 (en) |
| CN (1) | CN102129941B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436984A (en) * | 2011-12-26 | 2012-05-02 | 法泰电器（江苏）股份有限公司 | Breaker rapid disjunction device |
| CN111433879A (en) * | 2017-12-01 | 2020-07-17 | 三菱电机株式会社 | Contactor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6395676B2 (en) * | 2015-07-31 | 2018-09-26 | 三菱電機株式会社 | Circuit breaker |
| GB2602968A (en) * | 2021-01-20 | 2022-07-27 | Eaton Intelligent Power Ltd | Moving contact oscillating damper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311529A (en) * | 1988-06-08 | 1989-12-15 | Mitsubishi Electric Corp | Opening/closing mechanism for circuit breaker |
| JPH10255639A (en) * | 1997-03-06 | 1998-09-25 | Mitsubishi Electric Corp | Circuit breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53114078A (en) * | 1977-03-15 | 1978-10-05 | Matsushita Electric Works Ltd | Wiring breaker |
| JPH04190521A (en) * | 1990-11-26 | 1992-07-08 | Hitachi Ltd | Breaker for wiring |
| KR100831709B1 (en) | 2007-02-27 | 2008-05-22 | 동아전기공업 주식회사 | Trip device for circuit breaker |
-
2010
- 2010-01-19 JP JP2010009127A patent/JP5333253B2/en active Active
- 2010-08-30 CN CN201010268569.8A patent/CN102129941B/en active Active
- 2010-11-26 KR KR1020100118545A patent/KR101093850B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311529A (en) * | 1988-06-08 | 1989-12-15 | Mitsubishi Electric Corp | Opening/closing mechanism for circuit breaker |
| JPH10255639A (en) * | 1997-03-06 | 1998-09-25 | Mitsubishi Electric Corp | Circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436984A (en) * | 2011-12-26 | 2012-05-02 | 法泰电器（江苏）股份有限公司 | Breaker rapid disjunction device |
| CN102436984B (en) * | 2011-12-26 | 2014-01-15 | 法泰电器（江苏）股份有限公司 | Breaker rapid disjunction device |
| CN111433879A (en) * | 2017-12-01 | 2020-07-17 | 三菱电机株式会社 | Contactor |
| CN111433879B (en) * | 2017-12-01 | 2022-02-18 | 三菱电机株式会社 | Contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5333253B2 (en) | 2013-11-06 |
| JP2011150812A (en) | 2011-08-04 |
| KR20110085857A (en) | 2011-07-27 |
| CN102129941B (en) | 2014-05-07 |
| KR101093850B1 (en) | 2011-12-13 |
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