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This is the factory OEM replacement contactor (part number HN53CB115) for the Carrier C4850C48ZN030600 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from your thermostat and closes the circuit to supply line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — your system will either refuse to turn on entirely, run continuously without shutting off, or trip the breaker under heavy load.
Compatibility: Designed as a direct OEM fit for the Carrier C4850C48ZN030600 packaged unit. Always verify coil voltage and pole configuration on your existing contactor's data label before ordering to confirm fitment. If you have any questions about compatibility, our HVAC parts specialists will verify the fit before you order — no guesswork required.