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This is the factory OEM replacement contactor (part number HN52KD020) for the Carrier HA1BJX060000AAAA packaged or split-system unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat or control board and closes the circuit to energize the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a stuck or burnt coil, or welded points — the system either refuses to start, runs continuously without cycling off, or trips the breaker repeatedly.
Compatibility: Engineered specifically for the Carrier HA1BJX060000AAAA unit. The 060 designation indicates a 5-ton capacity system — confirm your unit's data plate matches the coil voltage and pole configuration before ordering. Our fitment team is available to verify compatibility prior to purchase. Order today and get your system back up and running fast with same-day shipping from our national warehouse network.