Description
This is a BRAND NEW 24 volt Double Pole Contactor rated at 40 amps. Mars # is 17425 (Mars Replacement for old Mars # 17421). It is a "heavy duty" contactor with sealed contacts! It fits 99% of all residential Air Conditioners/Heat pumps on the market. Thanks for looking and good luck!
Function:
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.
Replaces Old Part #s:
17421
Repair Difficulty Level:
Partial List of Units that Use This Item:
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