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This OEM contactor is the factory-specified high-voltage relay for the Carrier C50A302052 packaged unit. The contactor is the electrical gatekeeper of your system — when the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, closing the high-voltage contacts that power the compressor and condenser fan motor. When a contactor fails, the result is typically an AC unit that receives a thermostat signal but never turns on, or one that runs intermittently due to pitted or burned contacts. Replaces OEM part numbers HN53CB115, HN53CD115, and HN53HF122.
Compatibility: Designed for the Carrier C50A302052 commercial packaged unit. This listing covers OEM part numbers HN53CB115, HN53CD115, and HN53HF122 — all are factory-authorized replacements for this model. Verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment prior to purchase — same-day shipping available on all in-stock orders.