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This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C48AY06021 packaged unit. The contactor acts as the critical switching component that closes the high-voltage circuit to the compressor and condenser fan motor when your thermostat calls for cooling. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the system will either fail to start entirely, run continuously without shutting off, or trip the breaker repeatedly. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Engineered as a direct OEM replacement for the Carrier C4850C48AY06021 packaged unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always verify pole count, coil voltage, and amperage rating on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get same-day shipping on in-stock parts.