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This OEM replacement contactor is the factory-specified part for the Carrier C4850C50AW03051 packaged unit. The contactor is the high-voltage switching relay that receives a 24V signal from the thermostat or control board and closes the circuit to power the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or contacts that weld shut — the system will either refuse to start entirely, run continuously without shutting off, or trip the breaker repeatedly. Replaces OEM part numbers HN53CB115 and HN53HF122.
Compatibility: Designed specifically for the Carrier C4850C50AW03051 packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Verify coil voltage and pole configuration against your unit's wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — order with confidence and get your system back online fast.