KR20120071937A - Trip unit for molded case circuit breaker - Google Patents

Trip unit for molded case circuit breaker Download PDF

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Publication number
KR20120071937A
KR20120071937A KR1020100133681A KR20100133681A KR20120071937A KR 20120071937 A KR20120071937 A KR 20120071937A KR 1020100133681 A KR1020100133681 A KR 1020100133681A KR 20100133681 A KR20100133681 A KR 20100133681A KR 20120071937 A KR20120071937 A KR 20120071937A
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KR
South Korea
Prior art keywords
armature
magnetic core
circuit breaker
spring
trip unit
Prior art date
Application number
KR1020100133681A
Other languages
Korean (ko)
Other versions
KR101427800B1 (en
Inventor
안병수
Original Assignee
엘에스산전 주식회사
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 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020100133681A priority Critical patent/KR101427800B1/en
Priority to CN201110459065.9A priority patent/CN102543602B/en
Publication of KR20120071937A publication Critical patent/KR20120071937A/en
Application granted granted Critical
Publication of KR101427800B1 publication Critical patent/KR101427800B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • 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
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
    • H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

The present invention relates to a trip unit of a circuit breaker. The trip unit of the circuit breaker includes: a magnetic core generating magnetic force when power is applied; An armature rotatably disposed on one side of the magnetic core; And an armature spring for applying an elastic force in a direction away from the magnetic core so that the rise of the moment acting on the armature is suppressed when the armature is sucked by the magnetic core. Thereby, the instantaneous trip operation can be made smooth even when the suction force of the magnetic core is moderately increased.

Description

Trip unit of wiring breaker {TRIP UNIT FOR MOLDED CASE CIRCUIT BREAKER}

The present invention relates to a trip unit of a circuit breaker. More particularly, the present invention relates to a trip unit of a circuit breaker in which an uncertainty section of instantaneous operation is reduced to ensure a constant instantaneous characteristic.

As is well known, a circuit breaker is an electrical circuit that protects a load device and a circuit by automatically opening and closing a relatively low voltage power circuit using an operation handle, or automatically detecting a fault current such as a short circuit current to cut off the circuit. It is a kind of device.

1 is a cross-sectional view of a conventional circuit breaker, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a view for explaining the operation of the trip unit of FIG. 2, and FIG. 4 is a coupling state of the armature of FIG. 2. It is a perspective view shown. As shown in FIG. 1, the circuit breaker is disposed to be in contact with and separated from the case 10, the fixed contactor 20 fixedly disposed on the case 10, and the fixed contactor 20. It may be configured to include a movable contact 30, a switching mechanism 40 for opening and closing the movable contact 30 and a trip unit 50 for detecting and automatically blocking when an accident current such as a short circuit current occurs.

An operation handle may be provided in the upper region of the case 10 to manually open and close the opening and closing mechanism 40.

The fixed contactor 20 may be fixedly disposed in the case 10 so as to be connected to a bus and / or a load. The fixed contact 20 may include a plurality of fixed contacts 22 spaced apart from each other.

One side of the fixed contact 20 may be provided with a movable contact 30 so as to be in contact with and detachable from the fixed contact 22. The movable contact 30 may be provided with a plurality of movable contacts 32 which may be in contact with the fixed contact 22, respectively. A shaft 35 may be provided in the central region of the movable contact 30.

On the other hand, one side of the fixed contact 20 may be provided with a trip unit 50 to automatically detect the trip when the accident current is energized (trip).

The trip unit 50 is magnetically connected to the fixed contactor 20 so as to generate a magnetic force when energized, and is disposed on one side of the magnetic core 51. An armature 53 sucked by the magnetic core 51 and an armature spring 70 for applying an elastic force in a direction away from the magnetic core 51 may be provided.

The armature 53 may be configured to be rotatable about the rotation shaft 55. The pivot shaft 55 may be provided in the lower region of the armature 53. An amateur supporter 60 may be provided at one side of the armature 53 to rotatably support the armature 53.

In the lower region of the armature supporter 60, a rotation support part 62 may be formed so that the armature 53 can be rotatably supported about the rotation shaft 55. The armature supporter 60 may be provided with a screw 65 for adjusting the distance between the armature 53 and the magnetic core 51. The initial distance between the magnetic core 51 and the armature 53 may be determined by the screw 65.

An armature spring 70 for applying an elastic force to the armature 53 may be provided around the rotation shaft 55. The armature spring 70 may be composed of a torsion coil spring.

An upper side of the armature 53 may be provided with a crossbar 71 to be pressed by the armature 53 to rotate when the armature 53 is sucked.

One side of the crossbar 71 is a trip shooter for performing a trigger (TRIGGER) function so that the opening and closing mechanism 40 can perform a trip operation by interlocking when the crossbar 71 is rotated when the armature 53 is sucked 73, the trip bar 75 and the latch holder 77 may be configured to be provided respectively.

By the way, in such a conventional circuit breaker, the instantaneous operation characteristic of the armature 53 attracted by the magnetic core 51 at the time of energization is the initial distance between the magnetic core 51 and the armature 53, the armature spring 70. Will be affected by many management items, such as the spring constant of the spring, the super and longitudinal loads of the armature spring 70, and the shape of each component (e.g., the magnetic core 51 and armature 53) that detects the fault current. This may make it difficult to implement a constant instantaneous characteristic.

In particular, the armature spring 70 is composed of a torsion coil spring and the resistance increases as the armature spring 70 is compressed during rotation of the armature 53 by the suction of the magnetic core 51 and the magnetic core 51 and If the suction force is gradually increased until the armature 53 is contacted, there is a problem that the delay (section) may be long.

Accordingly, an object of the present invention is to provide a trip unit of a circuit breaker which can smoothly trip instantaneously even when the suction force of the magnetic core is moderately increased.

In addition, another object of the present invention is to provide a trip unit of a circuit breaker capable of realizing constant instantaneous characteristics by super load management of an armature spring.

In addition, another object of the present invention is to provide a trip unit of a circuit breaker capable of suppressing a rise of a moment in an armature operating section.

The present invention, the magnetic core for generating a magnetic force when the power is applied to achieve the above object; An armature rotatably disposed on one side of the magnetic core; And an armature spring for applying an elastic force in a direction away from the magnetic core so that an increase in the moment acting on the armature is suppressed when the armature is sucked by the magnetic core, thereby providing a trip unit of a circuit breaker.

Here, the armature spring may be composed of a compression coil spring.

Arranged on one side of the amateur can be configured to further include an amateur supporter for rotatably supporting the amateur.

The armature supporter may be configured to include a support for supporting one end of the armature spring.

The armature may be configured to penetrate the receiving portion so that the armature spring can be accommodated.

The support portion may be configured to be inserted into the accommodation portion.

On the other hand, according to another field of the present invention, a magnetic core for generating a magnetic force when the power is applied; An armature rotatably disposed on one side of the magnetic core and attracted by the magnetic core; An amateur supporter disposed on one side of the amateur to support the amateur rotatably; And an armature spring supported at one end by the armature supporter and the other end contacting the armature to apply an elastic force to the armature so that an increase in the moment acting on the armature upon suction of the armature by the magnetic core can be suppressed. There is provided a trip unit of a circuit breaker comprising a.

Here, the armature is formed through the receiving portion so that the armature spring is accommodated, the armature supporter may be configured to include a support portion inserted into the receiving portion to support the armature spring.

On the other hand, according to another field of the present invention, the case; A fixed contact fixedly disposed on the case; A movable contactor disposed to be in contact with and detachable from the fixed contactor; An opening and closing mechanism for opening and closing the movable contactor; And a trip unit of the circuit breaker for tripping the opening / closing mechanism when a predetermined current or more is energized.

As described above, according to one embodiment of the present invention, by providing an armature spring for applying the elastic force in the direction away from the magnetic core so that the rise of the moment acting on the armature during the suction of the armature, Instantaneous trip operation can be smoothly implemented even when the suction force of the core is moderately increased.

In addition, since the moment rise hardly occurs in the armature operation section, constant instantaneous characteristics can be realized by managing the superload of the amateur spring without considering the longitudinal load of the amateur spring.

1 is a cross-sectional view of a conventional circuit breaker;
2 is an enlarged view illustrating main parts of FIG. 1;
3 is a view for explaining the operation of the trip unit of FIG.
4 is a perspective view showing a coupled state of the armature of FIG.
5 is a cross-sectional view of a circuit breaker according to an embodiment of the present invention;
6 is a perspective view of the armature region of FIG.
7 is a perspective view illustrating an open state of the armature of FIG. 6;
8 and 9 are views for explaining the suction operation of the armature,
10 is a diagram showing the suction force of the magnetic core and the operating load of the armature.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

As shown in FIG. 5, the circuit breaker including the trip unit includes a case 110; A fixed contactor 120 fixedly disposed on the case 110; A movable contactor 130 disposed to be in contact with and detachable from the fixed contactor 120; Opening and closing mechanism 140 for opening and closing the movable contact 130; And a trip unit 150 of a circuit breaker according to an embodiment of the present invention, which trips the opening / closing mechanism 140 when a predetermined current is applied.

The case 110 may be formed of an approximately rectangular parallelepiped with an insulating resin member. The fixed contactor 120 may be provided inside the case 110. The fixed contact 120 may include a fixed contact 122 disposed to be spaced apart from each other by a predetermined distance. Buses and loads may be connected to the fixed contactors 120, respectively.

One side of the fixed contact 120 may be the movable contact 130 is in contact with and separated from the fixed contact (120). The movable contact 130 may be provided with a plurality of movable contacts 132 contacted and separated from the fixed contact 122, respectively. The shaft 135 may be provided at the center of the movable contact 130. As a result, the movable contact 132 may rotate about the shaft 135 to simultaneously contact and separate the fixed contact 122.

One side of the movable contact 130 may be provided with an opening and closing mechanism 140 for providing a driving force so that the movable contact 130 can be rotated to the closing and closing position quickly. Although not specifically illustrated, the opening and closing mechanism 140 may include a plurality of links, springs, and a motor. An operation handle 112 may be provided at one side of the opening and closing mechanism 140 to manually operate the opening and closing mechanism 140.

Meanwhile, the trip unit 150 may be provided at one side of the fixed contact 120.

The trip unit 150, as shown in Figure 5 and 6, the magnetic core for generating a magnetic force when the power is applied; An armature 161 rotatably disposed on one side of the magnetic core 151; And when the armature 161 applies an elastic force in a direction away from the magnetic core 151 to suppress an increase in the moment acting on the armature 161 when the armature 161 is sucked by the magnetic core 151. Armature spring 181; may be configured to include.

The magnetic core 151 may be electrically connected to one of the fixed contactors 120. The magnetic core 151 may include a suction part 153 protruding toward the armature 161, respectively. The bimetal 155 may be provided between the suction parts 153. The body metal 155 may be configured to deform at a constant current to rotate the crossbar 191 to be described later.

An armature 161 may be provided at one side of the magnetic core 151 so as to be attracted by the magnetic core 151 and contact the suction part 153 when energizing an accident current.

The armature 161 may include a horizontal portion 163 and a vertical portion 164 bent at a right angle to the horizontal portion 163 and may be configured to have a substantially 'L' shape. A rotating shaft hole 166 may be provided in the horizontal portion 163 so that the rotating shaft 165 may be inserted therein.

The trip unit 150 may further include an armature supporter 171 that rotatably supports the armature 161 on one side of the armature 161. The amateur supporter 171 may be formed in an almost 'L' shape. In the lower region of the armature supporter 171, a rotation support part 173 may be formed to rotatably support the armature 161. A pivot shaft insertion hole 175 may be formed in the pivot support 173 to allow the pivot shaft 165 to be inserted therethrough.

On the other hand, the armature supporter 171 and the armature 161 may be provided with the armature spring 181. The armature spring 181 may be composed of a compression coil spring. Here, the armature spring 181 may be arranged such that one end is supported by the armature supporter 171 and the other end may apply an elastic force to the armature 161.

According to this configuration, when the accident current is energized in the magnetic core 151 and the armature 161 is attracted by the magnetic core 151, the armature spring 181 is compressed to increase the elastic force but the armature spring is increased. The acting point at which the elastic force of 181 acts gradually moves to the acting points closer to the pivot shaft 165 of the armature 161 so that the moment of motion by the armature spring 181 is hardly increased. do. Thereby, even if the suction force by the energization of the accident current gradually increases, the armature 161 can be smoothly sucked (rotated) when the magnitude of the suction force is larger than the super load of the armature spring 181. Accordingly, the armature 161 has a relatively short delay section (or uncertainty section) until the suction force of the magnetic core 151 becomes greater than the increase in the elastic force of the armature spring 181, so that the delay of the armature 161 is as large as that of the conventional circuit breaker. Without this occurrence, it is possible to perform the instantaneous trip function quickly.

An armature 161 may be formed in the armature 161 to accommodate the armature spring 181. The accommodation portion 167 may be formed through the armature 161 to allow the armature spring 181 to enter and exit. More specifically, the receiving portion 167 may be formed through the vertical portion 164.

The armature supporter 171 may be provided with a support 177 so as to contact and support one end of the armature spring 181. The support part 177 may be configured to protrude from a vertical section of the armature supporter 171 to be inserted into the receiving part 167.

One end of the armature spring 181, more specifically, the upper end is supported in contact with the support 177, the other end of the armature spring 181, more specifically the lower end is the bottom surface of the receiving portion 167. Is supported in contact with. Here, the armature spring 181 may be configured to have a constant ultra-load so that the forward seat function can be performed only when energizing a predetermined current or more. At this time, the elastic force of the armature spring 181, as shown in Figure 8 acts on the action point (P1) spaced a predetermined distance from the rotation shaft 165 of the armature 161. Here, when the armature 161 is rotated by the suction of the magnetic core 151, the acting points of the elastic force of the armature spring 181 are moved in a direction close to the rotation shaft 165, so that the armature 161 Rarely increases the operating moment of).

On the other hand, on one side (upper side) of the armature 161, so-called trigger (TRIGGER) function to release the restraint of the latch of the opening and closing mechanism 140 when the armature 161 is rotated by the magnetic core 151. A cross bar 191, a trip shooter 193, a trip bar 195, and a latch holder 197 may be provided.

When the armature 161 rotates to rotate the crossbar 191, the trip shooter 193, the trip bar 195, and the latch holder 197 rotate continuously to release the restraint of the latch of the opening / closing mechanism 140. Done. When the restraint of the latch is released, the shaft 135 is rotated by the elastic force of the trip spring of the opening / closing mechanism 140, so that the movable contact 130 is quickly detached from the fixed contact 120.

By such a configuration, when an accident current (large current) is energized in the magnetic core 151, the magnetic core 151 is magnetized to generate a magnetic force. If the suction force generated by the accident current is larger than the super load of the armature spring 181, the armature 161 is attracted to the magnetic core 151 and rotated. At this time, as the armature 161 is rotated, the armature spring 181 is further compressed to increase the elastic force, but as shown in FIG. 9, the elastic force of the armature spring 181 is rotated at the armature 161. As the action points move in a direction close to the coaxial 165, the distance to the rotation axis 165 is shortened compared to the distance between the initial action points P1 shown in FIG. 8, so that the actual moment of motion of the armature 161 is almost reduced. Does not increase. As a result, a rapid instantaneous trip operation can be performed without a large delay occurring. In addition, since only the super load of the armature spring 181 is managed without considering the longitudinal load of the armature spring 181, it may be easier to obtain a constant instantaneous characteristic.

More specifically, referring to FIG. 10, the strength of the suction force of the magnetic core 151 due to the accidental current application is increased as the line L1 since it is proportional to the square of the distance between the magnetic core 151 and the armature 161. It can be shown as.

In the conventional circuit breaker, since the elastic force of the armature spring 181 increases when the armature 161 is rotated by the suction of the magnetic core 151, the operating load of the armature spring 181 has the same slope as the line L2. It can be shown as changing.

On the other hand, the trip unit 150 of the present invention, since the increase in the operating moment is hardly generated even when the armature 161 is attracted and rotated, as shown in the line L3, there is little change in the operating load of the armature 161 is shown. Can be.

In the conventional circuit breaker, the delay until the armature 161 is attracted (rotated) due to the increase in the elastic force of the armature spring 181 to perform the trip function is relatively long. In the circuit breaker according to the present invention, It can be seen that since there is almost no increase in the operating moment of the armature spring 181, the delay (section) until the suction force of the magnetic core 151 exceeds the initial load of the armature spring 181 is relatively small.

In the above, specific embodiments of the present invention have been shown and described. However, the present invention can be embodied in various forms without departing from the spirit or essential features thereof, so the embodiments described above should not be limited by the details of the detailed description.

Further, even when the embodiments not listed in the detailed description have been described, it should be interpreted broadly within the scope of the technical idea defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

110: case 112: operation handle
120: fixed contact 122: fixed contact
130: movable contact 132: movable contact
140: opening and closing mechanism 150: trip unit
151: Magnetic Core 161: Amateur
163: horizontal portion 164: vertical portion
165: rotating shaft 167: receiving portion
171: amateur supporter 177: support
181: Amateur Spring 191: Crossbar
193: Trip Shooter 195: Trip Bar
197: latch holder

Claims (6)

A magnetic core generating magnetic force when power is applied;
An armature rotatably disposed on one side of the magnetic core; And
An armature spring for applying an elastic force in a direction away from the magnetic core so that an increase in the moment acting on the armature when the armature is sucked by the magnetic core is suppressed;
Trip unit of the circuit breaker comprising a. The method of claim 1,
The armature spring is a tripping unit of a circuit breaker, characterized in that the compression coil spring. The method of claim 2,
And a armature supporter disposed on one side of the armature to support the armature rotatably. The method of claim 3,
The armature supporter is a trip unit of a circuit breaker, characterized in that it comprises a support for supporting one end of the armature spring. The method of claim 4, wherein
The armature is a trip unit of the circuit breaker, characterized in that the receiving portion is provided so that the armature spring is accommodated through. The method of claim 5,
The support unit is a trip unit of the circuit breaker, characterized in that inserted into the housing.
KR1020100133681A 2010-12-23 2010-12-23 Trip unit for molded case circuit breaker KR101427800B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020100133681A KR101427800B1 (en) 2010-12-23 2010-12-23 Trip unit for molded case circuit breaker
CN201110459065.9A CN102543602B (en) 2010-12-23 2011-12-23 Tripping unit of molded shell and tube circuit breaker and circuit breaker with the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100133681A KR101427800B1 (en) 2010-12-23 2010-12-23 Trip unit for molded case circuit breaker

Publications (2)

Publication Number Publication Date
KR20120071937A true KR20120071937A (en) 2012-07-03
KR101427800B1 KR101427800B1 (en) 2014-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100133681A KR101427800B1 (en) 2010-12-23 2010-12-23 Trip unit for molded case circuit breaker

Country Status (2)

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KR (1) KR101427800B1 (en)
CN (1) CN102543602B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200468359Y1 (en) * 2012-08-14 2013-08-08 엘에스산전 주식회사 Circuit breaker with trip device
KR200471898Y1 (en) * 2012-08-14 2014-04-01 엘에스산전 주식회사 Circuit breaker
KR101529590B1 (en) * 2013-12-19 2015-06-29 엘에스산전 주식회사 Instant trip device of circuit breaker
CN104835697A (en) * 2015-05-08 2015-08-12 无锡新宏泰电器科技股份有限公司 Tripping device for adjustable transient characteristic of molded case circuit breaker
KR20160083734A (en) * 2015-01-02 2016-07-12 엘에스산전 주식회사 Instant trip apparatus of molded case circuit breaker
CN107293456A (en) * 2016-04-11 2017-10-24 通用电气公司 Circuit-breaker including tripping mechanism

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Publication number Priority date Publication date Assignee Title
KR102017804B1 (en) * 2018-02-06 2019-09-03 엘에스산전 주식회사 Circuit Breaker

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JPH0896689A (en) * 1994-09-28 1996-04-12 Mitsubishi Electric Corp Trip device of circuit breaker
FR2757309B1 (en) * 1996-12-13 1999-01-29 Schneider Electric Sa SELECTIVE TRIP BLOCK FOR A MULTIPOLAR CIRCUIT BREAKER
KR19990042906A (en) * 1997-11-28 1999-06-15 이종수 Forward seating device of circuit breaker
JP2001236873A (en) 2000-02-24 2001-08-31 Matsushita Electric Works Ltd Trip gear for circuit breaker
JP3640169B2 (en) 2001-01-26 2005-04-20 松下電工株式会社 Circuit breaker trip device
CN2751432Y (en) * 2004-10-14 2006-01-11 刘志平 Permanent magnet mechanism equipped with under-voltage release
KR100652236B1 (en) * 2005-03-18 2006-12-01 엘에스산전 주식회사 Instant trip apparatus of molded case circuit breaker
CN101145475B (en) * 2006-09-12 2011-09-07 Ls产电株式会社 Moulded case type circuit breaker instant tripping device
JP4906528B2 (en) * 2007-02-01 2012-03-28 三菱電機株式会社 Circuit breaker overcurrent trip device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200468359Y1 (en) * 2012-08-14 2013-08-08 엘에스산전 주식회사 Circuit breaker with trip device
KR200471898Y1 (en) * 2012-08-14 2014-04-01 엘에스산전 주식회사 Circuit breaker
KR101529590B1 (en) * 2013-12-19 2015-06-29 엘에스산전 주식회사 Instant trip device of circuit breaker
US9368305B2 (en) 2013-12-19 2016-06-14 Lsis Co., Ltd. Instant trip device of circuit breaker
EP2887376B1 (en) * 2013-12-19 2020-02-26 LSIS Co., Ltd. Instant trip device of circuit breaker
KR20160083734A (en) * 2015-01-02 2016-07-12 엘에스산전 주식회사 Instant trip apparatus of molded case circuit breaker
CN104835697A (en) * 2015-05-08 2015-08-12 无锡新宏泰电器科技股份有限公司 Tripping device for adjustable transient characteristic of molded case circuit breaker
CN107293456A (en) * 2016-04-11 2017-10-24 通用电气公司 Circuit-breaker including tripping mechanism
CN107293456B (en) * 2016-04-11 2020-08-14 Abb瑞士股份有限公司 Circuit breaker including trip mechanism

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Publication number Publication date
KR101427800B1 (en) 2014-08-08
CN102543602B (en) 2014-12-17
CN102543602A (en) 2012-07-04

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