AC contactors (cj19 magnetic contactor) are widely used in power on-off and controlling circuits. It uses the main contact to open and close the circuit, uses auxiliary contacts to execute control instructions. The main contact is generally only normally open contacts, and auxiliary contacts often have two pairs of normally open and normally closed contact, small contactor is often used as an intermediate relay with the main circuit. AC contactor contacts, made of silver tungsten alloy, with good conductivity and high temperature ablation.
AC contactors are mainly composed of four parts:
(1) Electromagnetic system, including the attracting coil, moving core and static core;
(2) Contact system, including three main contacts and one to two groups of normally open, normally closed auxiliary contact, it is moving together with the core is linked to each other;
(3) Arc extinguishing device, the general capacity of the larger AC contactor are equipped with arc extinguishing device, in order to quickly cut off the arc, from burning the main contact;
(4) Insulation shell and accessories, all kinds of springs, transmission, short circuit, terminal and so on.
AC contactor has good electrical conductivity and high temperature ablation
公布 : TAIXI日付 : 2017-06-02ページビュー : 408
続きを読む
- Can the electric meter box and the fire hydrant box be a neighbor?
- Effect of voltage protection circuit breaker
- How to distinguish the good or bad of an AC contactor
- What are the requirements for the wiring when the EPS emergency power supply is used?
- New technology for auto reset circuit breaker with electric energy meter
- Technological innovation and breakthrough of auto reset circuit breaker
- The quality comparison of miniature circuit breakers is carried out in Zhejiang province to promote the quality improvement of the industry
- Communications industry: optical communications maintain a high level of prosperity
- How should consumers choose small circuit breakers?
- Structural characteristics of load isolation switch
- How to ensure the quality of the electric meter box industry
- What is the difference between disconnectors and isolation switches?
- Isolation requirements for electrical isolation switch
- Working principle of DC circuit breaker
- Development of molded case circuit breakers