This is a BRAND NEW Intertherm/Nordyne/Miller 24 volt Double Pole Contactor. The part# is 624722R. This contactor is used in Intertherm/Nordyne/Miller electric furnaces. There is no warranty and all sales are final. Thanks for looking and good luck!
A contactor form of a relay. Relays are switches that open and close circuits electrically. In most HVAC equipment a low voltage coil relay (24 vac) is energized in order to open or close a higher voltage (usually 120-240) circuit.