This is a BRAND NEW-In-The-BOX Intertherm Furnace Blower Motor Relay with a 24 volt coil. It is used in nearly all Mobile/Modular Home Electric Furnaces to control the Blower Motor. Replaces old Intertherm/Miller/Nordyne part #s: 660190 620537 620459 620689 621867 & 9400-13Q152. All Sales Final No Returns.
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.