OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This OEM replacement contactor (part number HN53CB115) is the factory-specified high-voltage relay for the Carrier C4850C50Z2030200 packaged unit. The contactor acts as the primary switch between your 24V control circuit and the high-voltage power supply feeding the compressor and condenser fan motor. When the thermostat calls for cooling, the control board energizes the contactor coil, closing the contacts and allowing line voltage to reach the compressor. A failed contactor typically causes the outdoor unit to stop responding entirely — the system will hum, buzz, or simply do nothing when a cooling call is made.
Compatibility: Engineered as the direct OEM replacement for Carrier model C4850C50Z2030200 packaged units. Always verify pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you buy for complete peace of mind.