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This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C50ZN070500 packaged unit. The contactor acts as the primary switch that allows 240V power to flow to the compressor and condenser fan motor when the thermostat calls for cooling. When a contactor fails — due to pitted or burned contacts, a stuck armature, or a failed coil — the system will either refuse to start entirely, run continuously without cycling off, or trip the breaker. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Engineered specifically for the Carrier C4850C50ZN070500 packaged unit. This part cross-references OEM numbers HN53CB115, HN53HF122, and HN53HG120 — confirm your existing part number matches one of these before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before your order ships.