OEM Carrier 2-Pole Contactor 24V Coil HN51KC024 for Model PH13NR03000GAFAA

This OEM contactor (part number HN51KC024) is the factory-specified replacement for the Carrier PH13NR03000GAFAA split-system heat pump. The contactor is a high-voltage relay controlled by the 24V signal from the thermostat or control board — it closes to send 240V power to the compressor and condenser fan motor every time a cooling or heating call is made. When this component fails, the most common symptom is an outdoor unit that simply won't energize: you may hear a click at the thermostat but the condenser remains completely dead, or the contacts may weld shut causing the unit to run continuously and uncontrolled.

• Specifications: 2-pole design | 24V AC coil voltage | Factory-rated amperage for Carrier PH13NR03000GAFAA | Direct OEM replacement — no modifications required
• OEM vs. Generic: This is the genuine Carrier OEM contactor, manufactured to exact factory contact-gap, coil-pull-in, and drop-out voltage specifications. Generic aftermarket contactors frequently use lower-grade silver-alloy contacts that pit and weld faster under load, shortening service life significantly.
• Install Difficulty: 3/5 — High-voltage work; always shut off the disconnect and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring before disconnecting terminals.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH13NR03000GAFAA heat pump. Always verify your unit's data plate voltage and amperage ratings match this contactor's specifications before installation. Our technical team is available to confirm fitment — contact us before ordering if you have any questions.