Air electromagnetic contactor

Electromagnetic contactor (English: MagneticContactor) mainly by the contacts system, the electromagnetic mcb circuit breaker, brackets, auxiliary contacts and the shell (or chassis) components.
Because AC electromagnetic contactor coil generally use AC power, after excitation in the contacts, usually high-decibel sound "slightly" noise, which has become the characteristics of electromagnetic contactor. While the 1980s, air circuit breaker have developed AC contactor solenoid silent and power, the basic feasible solution is to use the AC power step-downCircuit breaker, then through an internal rectifier into DC power supply, but the complexity of the control means rare.