The contacts, the electromagnet, and the housing all make a contactor. Most of the time, a lower-power circuit controls a switched circuit. Various components of the air conditioning system receive information from an AC contactor, which acts as a transmitter of electrical energy.
Switching from one circuit to another is the primary function of this device. Your AC unit’s contactor voltage and load sides connect when you turn on the unit to cool or heat your home. Contactors shut down the AC unit when it reaches its predetermined temperature.