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This is the factory OEM replacement contactor for the Carrier C4850C50ZN060600 packaged unit. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — when the stat calls for cooling, the contactor closes and delivers line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common causes of a completely unresponsive air conditioner: the system may hum without starting, fail to energize at all, or run continuously due to welded contacts. OEM part numbers HN53CB115 and HN53HF122 are both factory-specified replacements for this unit.
Compatibility: Designed for the Carrier C4850C50ZN060600 packaged unit. Always verify your existing contactor's 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 order if you have any questions.