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This is the factory OEM replacement contactor (part number HN51KB024) for the Payne PA12NA01800GAGAA split-system air conditioner. The contactor is the high-voltage relay that receives a 24V signal from your thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the result is an AC unit that simply won't turn on, or one that runs continuously and won't shut off.
Compatibility: Designed specifically for the Payne PA12NA01800GAGAA split-system condenser. Always verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. In stock and ships today.