OEM Carrier 1-Pole Contactor 30 Amp 24V Coil for Model PH15NA042000BAAA (HN51KC024)

This is the genuine OEM factory-specified contactor for the Carrier PH15NA042000BAAA heat pump. The contactor is the high-voltage relay that bridges line-voltage power to the compressor and condenser fan motor every time the thermostat calls for cooling or heating. When it fails, symptoms include the unit refusing to start despite a thermostat call, persistent humming at the contactor, the system running continuously and failing to shut off, or visible pitting and burning on the contact surfaces.

• Specs: 1-Pole | 30 Amps FLA / 150 Amps LRA | 24 VAC coil voltage | 50/60 Hz | OEM Part # HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact factory tolerances. Generic aftermarket contactors may carry ±10–15% contact-rating variance, accelerating compressor wear and increasing nuisance trip events over time.
• Install difficulty: 2/5 — Shut off ALL power at the disconnect and breaker before opening the unit. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter. Always photograph existing low-voltage wiring before removing any leads. Verify contactor pull-in by checking for 24V across coil terminals on a thermostat call.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH15NA042000BAAA heat pump. Verify part number HN51KC024 on your unit's wiring diagram or data plate before ordering. Cross-references include P282-0311, HN51CC024, 301362-101, and P282-1304. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — contact us today.