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This OEM replacement contactor is the factory-specified part for the Carrier C50A405023 packaged unit. The contactor is the high-voltage relay that receives the 24V signal from your thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — whether from pitted contacts, a burned coil, or a stuck plunger — your system will fail to energize, run continuously without cycling off, or trip the breaker repeatedly. OEM part numbers HN53CD115 and HN53HF122 are both covered by this listing.
Compatibility: Engineered specifically for the Carrier C50A405023 packaged unit. This part replaces OEM numbers HN53CD115 and HN53HF122. Always confirm coil voltage and pole configuration on your unit's data plate before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork, no return hassle.