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This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C50Z3060900 packaged unit. The contactor acts as the primary electrical switch that allows 240V power to reach your compressor and condenser fan motor when the thermostat calls for cooling. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the system either won't start at all, runs continuously without cycling off, or trips the circuit breaker. Replacing it with an OEM-matched unit restores factory-specified switching performance and protects your compressor investment.
Compatibility: Engineered for the Carrier C4850C50Z3060900 packaged unit and cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Verify pole count, coil voltage, and amperage rating on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get back to cool faster.