OEM Carrier Single-Pole Contactor 30 Amp 24V Coil — HN51KC024 for Model PH15NA04200GBAAA

This is the factory-authorized OEM replacement contactor for the Carrier PH15NA04200GBAAA heat pump. The contactor is the high-voltage relay that bridges the thermostat's 24V control signal to the high-voltage compressor and condenser fan motor circuits. When your thermostat calls for cooling or heating, the 24V coil energizes and pulls in the contacts — allowing line voltage to power your compressor. When a contactor fails, symptoms include the outdoor unit not starting at all, humming without compressor engagement, contacts that weld shut causing continuous operation, or visible pitting and burn marks on the contact surfaces.

• Specs: 1-Pole | 30A FLA (Full Load Amps) | 150A LRA (Locked Rotor Amps) | 24 VAC Coil | 50/60 Hz | OEM Part# HN51KC024
• OEM vs Generic: This genuine Carrier Factory Authorized Part is manufactured to exact OEM tolerances. Generic contactors often use lower-grade contact materials that pit and weld faster under load — especially critical on heat pump systems like the PH15NA04200GBAAA that cycle frequently in both heating and cooling modes.
• Install difficulty: 2/5 — Always disconnect power at the breaker and discharge any residual voltage before touching terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Verify 24V coil pull-in after installation with 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 PH15NA04200GBAAA. Also cross-references part numbers P282-0311, HN51CC024, P282-1304, and P282-1305. Confirm your unit's data plate lists HN51KC024 as the specified contactor before ordering. Our parts team is available to verify fitment — just reach out before you buy.