OEM Carrier 1-Pole Contactor 30 Amp 24V — HN51KC024 for Model PH10JA036000ADAA

This genuine OEM Carrier contactor (part# HN51KC024) is the factory-specified replacement for the Carrier PH10JA036000ADAA heat pump/AC system. The contactor acts as a high-voltage relay: when your thermostat calls for cooling, the 24V control circuit energizes the coil, the contacts close, and line voltage is delivered to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an AC unit that won't start, chatters loudly, runs continuously, or fails to shut off — all signs it's time to replace this part.

• Specs: 1-Pole configuration | 24 VAC coil voltage | 30A FLA (Full Load Amps) | 150A LRA (Locked Rotor Amps) | 50/60 Hz | OEM part# HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact OEM coil resistance and contact-gap tolerances. Generic aftermarket contactors can exhibit contact pitting, coil burnout, and premature failure under high cycling loads — especially critical in a heat pump application like the PH10JA036000ADAA that runs year-round.
• Install difficulty: 2/5 — Always shut off power at the disconnect box before opening the control compartment. Photograph all wiring before disconnecting. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter to verify 24V coil pull-in after installation. Follow the unit wiring diagram for line, load, and coil lead connections.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for Carrier model PH10JA036000ADAA. Also cross-references part numbers P282-0311, HN51CC024, P282-1304, 301362-101, 301323-101, and 72930DP1. Always verify the part number on your existing contactor's label before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy.