[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

KR100290934B1 - Auxiliary contact system of magnetic contactor - Google Patents

Auxiliary contact system of magnetic contactor Download PDF

Info

Publication number
KR100290934B1
KR100290934B1 KR1019970072494A KR19970072494A KR100290934B1 KR 100290934 B1 KR100290934 B1 KR 100290934B1 KR 1019970072494 A KR1019970072494 A KR 1019970072494A KR 19970072494 A KR19970072494 A KR 19970072494A KR 100290934 B1 KR100290934 B1 KR 100290934B1
Authority
KR
South Korea
Prior art keywords
auxiliary
contactor
crossbar
magnetic contactor
contact
Prior art date
Application number
KR1019970072494A
Other languages
Korean (ko)
Other versions
KR19990052951A (en
Inventor
최관호
Original Assignee
이종수
엘지산전 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 이종수, 엘지산전 주식회사 filed Critical 이종수
Priority to KR1019970072494A priority Critical patent/KR100290934B1/en
Publication of KR19990052951A publication Critical patent/KR19990052951A/en
Application granted granted Critical
Publication of KR100290934B1 publication Critical patent/KR100290934B1/en

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/541Auxiliary contact devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/56Contact spring sets
    • H01H50/58Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Landscapes

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

Abstract

PURPOSE: An auxiliary contact system of a magnetic contactor is provided to improve productivity of a magnetic contactor by forming auxiliary contact points on a side of a cross bar and thus reducing size of a magnetic contactor. CONSTITUTION: A cross bar(40) permits upper and lower auxiliary slots(40b,40c) to be formed only on either of left side end or a right side end thereof. In a state that the cross bar(40) is formed on an upper frame, a phase insulator is interposed between the upper and lower auxiliary slots(40b,40c), such that insulating property between the auxiliary slots(40b,40c) is improved. The phase insulator is made in a partition form such that a side end thereof is attached to an inside of the upper frame. In the state that the cross bar(40) is installed on the upper frame, the phase insulator is located between the upper auxiliary slot(40b) and the lower auxiliary slot(40c). Therefore, insulation between an auxiliary fixed contactor which is fixed to the upper frame and an auxiliary movable contactor(72) which is installed on the respective auxiliary slots(40b,40c) can be improved.

Description

전자접촉기의 보조접점시스템{auxiliary contact system of magnetic contactor}Auxiliary contact system of magnetic contactor

본 발명은 전자접촉기에 관한 것으로서, 보다 상세하게는 메인회로의 개폐상태를 나타내기 위해 보조회로의 개폐작용을 이루는 보조접촉자에 관한 것이다.The present invention relates to an electromagnetic contactor, and more particularly, to an auxiliary contactor that performs the opening and closing action of the auxiliary circuit to indicate the opening and closing state of the main circuit.

일반적으로 전자접촉기(Magnetic Contactor)는 모터 등의 과부하 보호를 위한 써머릴레이(Thermal Relay)와 함께 전자개폐기(Magnetic Switch)를 구성하며, 전기회로의 개폐를 행하는 것으로서, 전기회로를 직접 차단 또는 접속하는 접점부와, 상기 접점부의 작동제어를 위한 전자석부와, 상기 접점부 및 전자석부가 설치된 절연재질의 상 하부 프레임과, 접점부와 전자석부의 연동을 위해 승강운동 가능하게 상기 프레임에 장착된 크로스바와, 상기 상부프레임의 상면에 장착되는 탑커버로 이루어져 있다.In general, a magnetic contactor forms a magnetic switch together with a thermal relay for overload protection of a motor, and performs an opening / closing of an electric circuit. A contact portion, an electromagnet portion for controlling the operation of the contact portion, an upper and lower frame made of an insulating material provided with the contact portion and the electromagnet portion, and a crossbar mounted on the frame to move up and down for interworking with the contact portion and the electromagnet portion; It consists of a top cover mounted on the upper surface of the upper frame.

상기 전자석부는 도 1에 나타난 것과 같이 하부프레임(10)에 장착된 고정코어(20)와, 상기 고정코어(20)를 자화시키기 위해 그 주위를 감싸는 형태로 장착된 보빈코일(30) 및 자화된 고정코어(20)에 의해 끌어당겨지는 가동코어(22)로 이루어져 있는 바, 가동코어(22)는 크로스바(40)의 하단에 장착되어 있으며, 고정코어(20)와 가동코어(22) 사이에는 끌어당겨진 가동코어(22)를 원위치로 되돌리기 위한 리턴스프링(50)이 장착되어 있다.As shown in FIG. 1, the electromagnet portion includes a fixed core 20 mounted on the lower frame 10, a bobbin coil 30 mounted thereon, and magnetized around the fixed core 20 to magnetize the fixed core 20. Consists of a movable core 22 drawn by the fixed core 20, the movable core 22 is mounted on the lower end of the crossbar 40, between the fixed core 20 and the movable core 22 A return spring 50 is mounted to return the pulled movable core 22 to its original position.

접점부는 상부프레임(12)의 양측단에 분리 고정되어 전기회로의 전원투입측단자와 부하측 단자가 각각 연결되는 다수개의 좌 우 고정접촉자(60)와, 크로스바(40)에 설치되어 상기 좌 우 고정접촉자(60)를 전기적으로 연결 또는 분리시키는 다수개의 가동접촉자(62)로 이루어져 있는 바, 상기 가동접촉자(62)는 완충스프링(52)에 의해 탄성적인 압박력을 받아 지지되는 구조로 크로스바(40)에 형성된 메인슬롯(40a)에 삽입장착되어 있다(도 2참조).The contact portion is fixed to both ends of the upper frame 12 and is provided on the left and right fixed contactors 60 and crossbars 40, respectively, to which the power input side terminal and the load side terminal of the electric circuit are respectively connected, and fixed to the left and right. Consists of a plurality of movable contacts 62 for electrically connecting or disconnecting the contactor 60, the movable contact 62 is a crossbar 40 in a structure that is supported by the elastic pressing force by the buffer spring (52) Is inserted into and mounted in the main slot 40a (see Fig. 2).

따라서, 상술한 바와 같이 구성된 전자접촉기에 의하면 봅인코일(30)에 전류가 인가되어 고정코어(20)가 자화될 경우, 상기 고정코어(20)의 자력에 의해 가동코어(22)가 끌어당겨지고, 이에 따라 가동코어(22)가 설치된 크로스바(40)가 하강하면서 상기 크로스바(40)에 설치된 가동접촉자(62)와 상부프레임(12)에 고정된 고정접촉자(60)가 접속되어 전기회로가 통전된다.Therefore, according to the magnetic contactor configured as described above, when the current is applied to the bob in coil 30 and the fixed core 20 is magnetized, the movable core 22 is attracted by the magnetic force of the fixed core 20. Accordingly, while the cross bar 40 provided with the movable core 22 descends, the movable contact 62 installed on the cross bar 40 and the fixed contact 60 fixed to the upper frame 12 are connected to the electric circuit. do.

이와 같은 전자접촉기에 의해 개폐되는 전기회로를 메인회로라 할때 메인회로에 그 개폐상태를 나타내는 작동램프 등의 표시수단이 연계될 경우에는 상기 표시수단의 작동을 위한 보조회로와, 보조회로의 개폐를 위한 보조접점시스템을 필요로 하는 바, 상기 보조접점시스템은 크로스바(40)에 장착된 보조가동접촉자(72)와 상부프레임(12)에 고정되어 상기 보조가동접촉자(72)와 대응하는 보조고정접촉자(70)로 이루어져 있다.When an electric circuit opened and closed by such a magnetic contactor is called a main circuit, when a display means such as an operation lamp indicating an open / closed state is connected to the main circuit, an auxiliary circuit for operating the display means and opening / closing of the auxiliary circuit are shown. In need of an auxiliary contact system for the bar, the auxiliary contact system is fixed to the auxiliary movable contactor 72 and the upper frame 12 mounted on the crossbar 40, the secondary fixed contact corresponding to the auxiliary movable contact 72 It consists of a contactor 70.

여기서, 보조접점시스템은 메인회로가 개로된 상태를 나타내기 위해 작동램프 등의 표시수단을 온(on) 상태로 하고, 메인회로가 폐로된 상태를 나타내기 위해 표시수단을 오프(off) 상태로 하는 a접점상태와, 그 반대인 b접점상태로 구성되는 바, a접점상태에서는 보조가동접촉자(72)가 보조고정접촉자(70)의 상방에 위치된상태에서 크로스바(40)가 아래로 내려옴에 따라 보조고정접촉자(70)와 접속됨으로써 보조회로의 개로상태를 이루게 하며, b접점상태에서는 보조가동접촉자(72)가 보조고정접촉자(70)의 하방에 위치된 상태에서 서로 접속되어 있다가 크로스바(40)가 아래로 내려옴에 따라 서로 분리됨으로써 보조회로의 폐로상태를 이루게 된다.Here, the auxiliary contact system turns on the display means such as the operation lamp to indicate the open state of the main circuit, and turns off the display means to indicate the closed state of the main circuit. The contact bar a and the contact b on the contrary are composed of the bar bar. In the contact a state, the auxiliary movable contactor 72 is positioned above the auxiliary fixed contactor 70 so that the crossbar 40 is lowered. As a result, the auxiliary circuit is connected to the auxiliary fixed contactor 70 to achieve an open state of the auxiliary circuit, and in the b contact state, the auxiliary movable contactor 72 is connected to each other in a state located below the auxiliary fixed contactor 70 and then crossbars ( As 40) descends, they are separated from each other to form a closed state of the auxiliary circuit.

그리고, 이와 같은 보조접점시스템에서는 a, b 접점상태가 동시에 하나의 전자접촉기에 구비될 경우에는 각 보조접점 간의 절연성이 확보되도록 도 2에 나타난 것과 같이 크로스바(40)의 좌 우 양측단에 형성된 상 하부보조슬롯(40b, 40c)을 통해 각각의 보조가동접촉자(72)를 설치토록 되어 있다.In the auxiliary contact system as described above, when the a and b contact states are simultaneously provided to one magnetic contactor, an image formed at both left and right ends of the crossbar 40 as shown in FIG. 2 to ensure insulation between the respective auxiliary contacts. Each of the auxiliary movable contactors 72 is installed through the lower auxiliary slots 40b and 40c.

따라서, 상술한 바와 같은 종래기술에 의하면 크로스바(40)의 일측에 형성된 상부보조슬롯(40b)에 a접점의 구성을 위한 보조가동접촉자(72)를 장착할 경우에는 크로스바(40)의 타측에 형성된 하부보조슬롯(40c)에 b접점의 구성을 위한 보조가동접촉자(72)를 장착함으로써 각 보조가동접촉자(72)에 대응되도록 장착된 각 보조고정접촉자(70)와 더불어 보조접점시스템을 이루게 되는 것이다.Therefore, according to the prior art as described above, when the auxiliary movable contactor 72 for the configuration of a contact point is attached to the upper auxiliary slot 40b formed at one side of the crossbar 40, the other side of the crossbar 40 is formed. By mounting the auxiliary movable contactor 72 for the configuration of the contact b in the lower auxiliary slot (40c) is to form an auxiliary contact system with each auxiliary fixed contactor 70 mounted to correspond to each auxiliary movable contactor (72). .

그러나, 이러한 종래기술에 의하면 a, b접점의 절연성 확보를 위해 보조 접점을 이루는 보조가동접촉자(72)가 크로스바(40)의 좌 우양측에 설치되어야 하기 때문에 크로스바(40) 및 상기 보조가동접촉자(72)와 접속되는 보조고정접촉자(70)가 부착된 상부프레임(12) 역시 커져야 하는 등 결국 전자접촉기 전체의 크기가 커지게 됨으로써 생산성 및 사용상 편의성이 떨어진다는 문제점이 발생한다.However, according to the related art, since the auxiliary movable contactor 72 forming the auxiliary contact to secure the insulation of the a and b contacts must be installed at the left and right sides of the crossbar 40, the crossbar 40 and the auxiliary movable contactor ( The upper frame 12 to which the auxiliary fixed contactor 70 connected to 72 is also required to be enlarged, resulting in an increase in the size of the entire magnetic contactor, resulting in a decrease in productivity and convenience in use.

본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로, 크로스바의 일측에서 a, b 보조접점을 모두 구성하여 전자접촉기의 크기를 줄일 수 있게 됨으로써 전자접촉기의 생산성 향상에 도움이 되는 전자접촉기의 보조접점시스템을 제공하는 것을 목적으로 한다.The present invention has been made to solve the problems of the prior art as described above, it is possible to reduce the size of the magnetic contactor by configuring both a, b auxiliary contact on one side of the crossbar to help improve the productivity of the magnetic contactor It is an object to provide an auxiliary contact system of a contactor.

상기의 목적을 이루기 위하여 본 발명은 가동접촉자의 장착을 위한 메인슬롯이 형성된 크로스바와, 상기 크로스바가 상 하 왕복이동 가능하게 설치되며 상기 가동접촉자와 접촉 분리되는 고정접촉자가 부착된 상부프레임을 포함하여 구성된 전자접촉기에 있어서, 상기 크로스바의 좌측 또는 우측단에는 소정의 간격을 두고 보조가동접촉자가 장착되는 상 하부보조슬롯이 형성되고, 상기 상부프레임에는 크로스바가 장착된 상태에서 상기 상하부보조슬롯 사이에 위치됨으로써 각 보조슬롯 간의 절연성을 높일 수 있는 상간 절연체가 구비된 것을 특징으로 하는 전자접촉기의 보조접점시스템을 제공한다.In order to achieve the above object, the present invention includes a crossbar having a main slot for mounting a movable contactor, and an upper frame having a fixed contactor mounted on the crossbar so as to be reciprocated vertically and separated from the movable contactor. In the magnetic contactor configured, the upper and lower auxiliary slots are mounted on the left or right end of the crossbar at predetermined intervals, and the upper frame is positioned between the upper and lower auxiliary slots while the crossbar is mounted. By providing an auxiliary contact system of the magnetic contactor, characterized in that the phase insulator is provided to increase the insulation between the auxiliary slots.

도 1은 일반적인 전자접촉기의 구조를 나타낸 분해 사시도1 is an exploded perspective view showing the structure of a general magnetic contactor

도 2는 종래 전자접촉기의 보조접점시스템에 따른 크로스바의 구조를 나타낸 사시도Figure 2 is a perspective view showing the structure of the crossbar according to the auxiliary contact system of the conventional magnetic contactor

도 3은 본 발명의 실시예에 따른 전자접촉기의 보조접점시스템에 적용된 크로스바의 구조를 나타낸 사시도Figure 3 is a perspective view showing the structure of the crossbar applied to the auxiliary contact system of the magnetic contactor according to the embodiment of the present invention

도 4는 본 발명의 실시예에 따른 전자접촉기의 보조접점시스템에 대한 개략적인 구성도4 is a schematic configuration diagram of an auxiliary contact system of a magnetic contactor according to an embodiment of the present invention;

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

10 : 하부프레임 12 : 상부프레임10: lower frame 12: upper frame

20 : 고정코어 22 : 가동코어20: fixed core 22: movable core

30 : 보빈코일 40 : 크로스바30: bobbin coil 40: crossbar

40a : 메인슬롯 40b : 상부보조슬롯40a: main slot 40b: upper secondary slot

40c : 하부보조슬롯 50 : 리턴스프링40c: lower auxiliary slot 50: return spring

60 : 고정접촉자 62 : 가동접촉자60: fixed contact 62: movable contact

70 : 보조고정접촉자 72 : 보조가동접촉자70: auxiliary fixed contactor 72: auxiliary movable contactor

80 : 상간절연체80: phase insulator

이하, 본 발명의 실시예를 첨부된 도 3부터 도 4까지 참조로 하여 상세하게 설명하며, 본 발명의 구성중 종래의 구성과 동일한 부분은 그 설명을 생략하고 동일부호를 부여하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 4, and the same parts as those of the conventional structure of the present invention will be omitted with the same reference numerals.

도 3은 본 발명의 실시예에 따른 전자접촉기의 보조접점시스템에 적용된 크로스바의 구조를 나타낸 사시도이고, 도 4는 본 발명의 실시예에 따른 전자접촉기의 보조접점시스템에 대한 개략적인 구성도이다.Figure 3 is a perspective view showing the structure of the crossbar applied to the auxiliary contact system of the magnetic contactor according to the embodiment of the present invention, Figure 4 is a schematic configuration of the auxiliary contact system of the magnetic contactor according to the embodiment of the present invention.

본 발명의 실시예에 따른 전자접촉기의 보조접점시스템은 도 3에 나타난 것과 같이 좌측단 또는 우측단 중 어느 한 곳에만 상 하부보조슬롯(40b, 40c)이 형성되는 크로스바(40)와, 상기 크로스바(40)가 상부프레임(12)에 설치된 상태에서 상기 상하부보조슬롯(40b, 40c) 사이에 위치됨으로써 각 보조슬롯(40b, 40c) 간의 절연성을 높일 수 있는 상간절연체(80)(도 4참조)를 포함하여 구성된다.In the auxiliary contact system of the magnetic contactor according to the embodiment of the present invention, as shown in FIG. 3, the crossbar 40 having the upper subsidiary slots 40b and 40c formed in only one of the left end and the right end, and the crossbar ( 40 is positioned between the upper and lower auxiliary slots 40b and 40c in the state where the upper frame 12 is installed, thereby providing an interphase insulator 80 (see FIG. 4) which can increase the insulation between the auxiliary slots 40b and 40c. It is configured to include.

여기서, 상기 상간절연체(80)는 그 일측단이 상부프레임(12)의 내면에 부착된 격벽형태로 이루어진다.Here, the phase insulator 80 is formed in a partition shape in which one end thereof is attached to the inner surface of the upper frame 12.

상술한 바와 같이 구성된 본 발명의 실시예에 따른 전자접촉기의 보조접점시스템에 의하면 도 4에 나타난 것과 같이 크로스바(40)가 상부프레임(12)에 설치된 상태에서 상부보조슬롯(40b)과 하부보조슬롯(40c) 사이에 상간절연체(80)가 위치되어 각 보조슬롯(40b, 40c)에 설치된 보조가동접촉자(72)와 상부프레임(12)에 고정된 보조고정접촉자(70) 조합 사이의 절연성을 향상시킬 수 있게 된다.According to the auxiliary contact system of the magnetic contactor according to the embodiment of the present invention configured as described above, as shown in FIG. 4, the upper auxiliary slot 40b and the lower auxiliary slot in the state where the crossbar 40 is installed on the upper frame 12. The interphase insulator 80 is positioned between the 40c to improve the insulation between the combination of the auxiliary movable contactor 72 installed in each of the auxiliary slots 40b and 40c and the auxiliary fixed contactor 70 fixed to the upper frame 12. You can do it.

그러므로, 상부보조슬롯(40b)을 통해서는 b접점을 구성하고, 하부보조슬롯(40c)을 통해서는 a접점을 구성하는 등 크로스바(40)의 일측에서 a, b 두가지의 접점을 동시에 구성할 수 있게 된다.Therefore, two contacts a and b can be simultaneously configured on one side of the crossbar 40, such as a contact b through the upper subslot 40b and a contact through a lower subslot 40c. Will be.

즉, 종래와 같이 하나의 전자접촉기에 두 가지의 보조접점을 구성할 경우 각 보조접점 간의 절연성 문제 때문에 크로스바(40)의 일측단에 하나의 보조접점 만을 구성해야 함으로써 결과적으로 전자접촉기의 크기가 커지는 문제를 피할 수 있게 된다.That is, when two auxiliary contacts are configured in one magnetic contactor as in the related art, only one auxiliary contact should be configured at one end of the crossbar 40 due to the insulation problem between the respective auxiliary contacts, resulting in an increase in the size of the magnetic contactor. Problems can be avoided.

한편, 본 실시예에서는 상부보조슬롯(40b)을 통해 b접점을 구성하고, 하부보조슬롯(40c)을 통해 a접점을 구성하였으나, 그 반대의 경우도 가능함은 물론이다.On the other hand, in the present embodiment, a contact b is configured through the upper auxiliary slot 40b, and a contact is configured through the lower auxiliary slot 40c, but vice versa.

상술한 바와 같이 본 발명에 따르면 크로스바의 일측단에 a, b 두 보조접점을 같이 구성할 수 있게 되어 결과적으로 전자접촉기의 전체적인 크기를 줄임으로써 전자접촉기의 생산성 및 사용상 편의성을 높일 수 있다는 이점이 발생한다.As described above, according to the present invention, a and b auxiliary contacts can be configured together at one end of the crossbar, resulting in the advantage that the productivity and convenience of use of the magnetic contactor can be improved by reducing the overall size of the magnetic contactor. do.

Claims (1)

가동접촉자의 장착을 위한 메인슬롯이 형성된 크로스바와, 상기 크로스바가 상하 왕복이동 가능하게 설치되며, 상기 가동접촉자와 접촉 분리되는 고정접촉자가 부착된 상부프레임을 포함하여 구성된 전자접촉기에 있어서,In the magnetic contactor comprising a crossbar formed with a main slot for mounting the movable contactor, the crossbar is installed so as to reciprocate vertically, and the upper frame is attached to the fixed contactor separated from the movable contactor, 상기 크로스바의 일측단에는 소정의 간격을 두고 구성된 상하부 보조슬롯과;Upper and lower auxiliary slots configured at predetermined intervals at one end of the crossbar; 상기 상하부 보조슬롯에 각각 설치된 보조가동접점과;An auxiliary movable contact installed in each of the upper and lower auxiliary slots; 상기 상하부 보조슬롯에 설치된 보조가동접점 사이의 상기 소정의 간격에 설치된 절연체를 포함한 전자접촉기 보조접점시스템.Magnetic contactor auxiliary contact system including an insulator installed at the predetermined interval between the auxiliary movable contact installed in the upper and lower auxiliary slots.
KR1019970072494A 1997-12-23 1997-12-23 Auxiliary contact system of magnetic contactor KR100290934B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970072494A KR100290934B1 (en) 1997-12-23 1997-12-23 Auxiliary contact system of magnetic contactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970072494A KR100290934B1 (en) 1997-12-23 1997-12-23 Auxiliary contact system of magnetic contactor

Publications (2)

Publication Number Publication Date
KR19990052951A KR19990052951A (en) 1999-07-15
KR100290934B1 true KR100290934B1 (en) 2001-07-12

Family

ID=37698057

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970072494A KR100290934B1 (en) 1997-12-23 1997-12-23 Auxiliary contact system of magnetic contactor

Country Status (1)

Country Link
KR (1) KR100290934B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200460095Y1 (en) * 2010-06-07 2012-05-04 엘에스산전 주식회사 Auxiliary contact unit for auxiliary relay

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0290426A (en) * 1988-09-27 1990-03-29 Terasaki Denki Sangyo Kk Multipolar electric switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0290426A (en) * 1988-09-27 1990-03-29 Terasaki Denki Sangyo Kk Multipolar electric switch

Also Published As

Publication number Publication date
KR19990052951A (en) 1999-07-15

Similar Documents

Publication Publication Date Title
KR101750137B1 (en) Contact mechanism and electromagnetic contactor using same
CN210956485U (en) Disconnector, disconnector assembly and contactor
GB2117974A (en) Power switching device
CN104718593B (en) Electromagnetic actuators for middle pressure vacuum circuit breaker
US4766273A (en) High current double-break electrical contactor
US5844457A (en) Electromagnetically operated electric switching apparatus
CA2085967A1 (en) Polarized Relay
US4975666A (en) Polarized electromagnetic relay
KR100290934B1 (en) Auxiliary contact system of magnetic contactor
US5276417A (en) Current switching device
KR20130023166A (en) Power contact device with electrodynamic compensation in the presence of high currents
US3418608A (en) Magnetically actuated miniature relay
US3736538A (en) Electric control devices with mechanical interlock
US2913557A (en) Circuit interrupter
EP3764385B1 (en) Magnetic latching relay
KR100298331B1 (en) auxiliary moving contact plate assembly of magnetic contactor
US4665375A (en) Electromagnetic relay
CN214542048U (en) Electromagnetic relay
US3118988A (en) Electromagnetic relay with conductive core and conductive housing
US1650172A (en) Electrically-operated switch
KR100304920B1 (en) fixing structure for moving core of magnetic contactor
KR870000780Y1 (en) Contact case
KR100290933B1 (en) Upper frame of magnetic contactor
KR200200491Y1 (en) A relay to supply electric power
JPH03141518A (en) Current-limitting switching device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20121221

Year of fee payment: 13

FPAY Annual fee payment

Payment date: 20131218

Year of fee payment: 14

FPAY Annual fee payment

Payment date: 20150106

Year of fee payment: 15

FPAY Annual fee payment

Payment date: 20160225

Year of fee payment: 16

FPAY Annual fee payment

Payment date: 20170302

Year of fee payment: 17

EXPY Expiration of term