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This OEM Carrier contactor (part #HN52KC052) is the factory-specified high-voltage switching relay for the Carrier 09DE044C510. The contactor acts as the electrical bridge between your thermostat's 24V control signal and the high-voltage power supply to your compressor and condenser fan motor. When the 120V coil energizes, the contacts close and allow current to flow — starting the system. When it fails, the results are immediate and unmistakable: the unit won't start, contacts chatter loudly, or the system runs continuously even when cooling isn't called for.
Compatibility: Designed as a direct OEM replacement for the Carrier 09DE044C510. Verify your existing contactor's pole count, coil voltage (120V), and amperage rating on the data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before your order ships — call or chat today.