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This is the factory-specified OEM contactor (part number HN52TC040) for the Carrier GC072HSRCXET1XX1 condensing unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to deliver 240V line power to the compressor and condenser fan motor. When it fails — due to pitted contacts, a burned coil, or contacts that weld shut — your system will either refuse to start entirely, run continuously without shutting off, or trip the breaker repeatedly. Replacing the contactor is one of the most common and cost-effective AC repairs available.
Compatibility: Engineered as a direct OEM replacement for the Carrier GC072HSRCXET1XX1 condensing unit. Always confirm coil voltage and pole configuration on your unit's wiring diagram or data plate prior to ordering. Our parts specialists are available to verify fitment before you purchase — contact us with your full model and serial number for confirmation.