AC contactor

Contactor mainly by electromagnetic system, contact system, arc system and other components.

① electromagnetic system: electromagnetic system comprises an electromagnetic coil and the core, is an important  air circuit breaker  contactor, driven by virtue of its contacts closed and disconnected.

② contact system: contactor contacts is the operative part, including the main contacts and auxiliary contacts. The role of the main contact making and breaking main circuit, control larger currents, while the auxiliary contacts are in the control loop, in order to meet the requirements of various control methods.

③ interrupter system: arc extinguishing device opens the circuit to guarantee contact, the resulting arc  power transformers  reliability, reduce damage to the arc of contact. In order to rapidly extinguish the arc when disconnected, usually contactors are equipped with interrupter device, generally semi-sealed longitudinal seam clay interrupter cover and

Equipped with magnetic arc blow loop.

④ Other parts: an insulating housing, springs, short-circuit ring, transmission and so on.