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This is the factory OEM replacement contactor for the Carrier C4850C50Z2055600 packaged unit. The contactor is a high-voltage relay that receives a low-voltage (24V) signal from the thermostat and switches line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — your system will either fail to start entirely, run continuously without cycling off, or trip the breaker repeatedly. Replaces OEM part numbers HN53CB115 and HN53HF122.
Compatibility: Designed specifically for the Carrier C4850C50Z2055600 packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Always verify coil voltage and pole configuration against your unit's wiring diagram and data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — in stock and ready to ship today.