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This OEM contactor is the factory-specified replacement for the Carrier C4850C48ZG060900 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to worn contacts, pitting, or coil burnout — the system will appear to receive a call for cooling but the outdoor unit will not energize. Common symptoms include a buzzing sound at the contactor, the AC not turning on at all, or intermittent cycling. OEM part numbers for this application include HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Designed for the Carrier C4850C48ZG060900 packaged unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always verify pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — reach out before you buy for peace of mind.