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This OEM replacement contactor is the factory-specified part for the Carrier C4850C50Z3075110 packaged unit. The contactor is the high-voltage relay that receives a 24V signal from your thermostat and closes the circuit to power the compressor and condenser fan motor. When it fails, the most common symptoms are an air conditioner that won't turn on at all, a humming sound with no compressor engagement, or a unit that runs continuously because the contacts have welded shut. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Engineered specifically for the Carrier C4850C50Z3075110 packaged unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always verify coil voltage and pole configuration on your unit's data plate prior to ordering. Our fitment team is available to confirm compatibility before you purchase — your satisfaction is guaranteed.