OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C50Z3040200 packaged unit. The contactor acts as the main electrical switch that allows 240V power to flow to the compressor and condenser fan motor when your thermostat calls for cooling. When the contactor fails — due to pitted contacts, a stuck plunger, or a burned coil — the system either won't start at all, runs continuously without shutting off, or hums loudly without the compressor engaging. Replaces OEM part numbers HN53CB115 and HN53HF122.
Compatibility: Engineered specifically for the Carrier C4850C50Z3040200 packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Verify your unit's data plate voltage and amperage ratings before ordering to ensure proper fitment. Not sure it fits? Our HVAC parts specialists confirm compatibility before you buy — no guesswork, no returns.