OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This OEM contactor (part number HN53CD115) is the factory-specified replacement for the Carrier CP50P250P205511CP packaged unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when the thermostat calls for cooling, the contactor closes its contacts to send line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common reasons a Carrier packaged unit won't turn on, short-cycles, or hums without starting. You may also notice pitted or burned contacts on the old unit upon inspection.
Compatibility: Designed specifically for the Carrier CP50P250P205511CP commercial packaged unit. Always verify coil voltage and pole configuration against your unit's wiring diagram and data plate before ordering. Our technical team is available to confirm fitment — order with confidence and get your system back online fast.