Contactors: Learn About Contactors Here > A contactor can stand on its own as a power control device, or as part of a starter. Contactors are used
in applications ranging from a light switch to the most complex, automated industrial equipment.
Contactors are used by electrical equipment that is frequently turned off and on (opening and closing the circuit),
such as lights, heaters and motors. The function of the contactor is always the same; to make and break all power
supply lines running to a Load or, as defined by NEMA, to repeatedly establish and interrupt an electrical power circuit.