Contactor
A contactor is an electric device to switch an electric circuit. It is controlled electrically for it to switch on or switch off the circuit. It has a relatively high current rating. The control circuit usually has much lower power level than the switched circuit.
Contactor Media
SPST normally-open Form-X (double make) hermetically sealed DC contactor cut-away animation showing main movable contacts and AUX feedback plunger
Powerful DC contactor with electro-pneumatic drive
