OEM Carrier Contactor 24V Coil 2-Pole for Model PH15NB04200GBBAA

This OEM replacement contactor (part number HN51KC024) is the factory-specified switching relay for the Carrier PH15NB04200GBBAA heat pump system. The contactor is a high-voltage relay controlled by the thermostat's 24V signal. When the thermostat calls for cooling or heating, the 24V coil energizes, closing the high-voltage contacts and supplying power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of a system that simply won't turn on — symptoms include a unit that hums but won't start, burned or pitted contact points, or a contactor that stays stuck open or closed.

• Specs: 24V AC coil voltage | 2-pole configuration | High-amperage contacts rated for compressor load | Factory-matched OEM replacement for part number HN51KC024
• OEM vs Generic: This is a genuine Carrier OEM contactor engineered to exact factory specifications. Generic contactors may use lower-grade contact materials that pit and burn faster under the high inrush current of a compressor start, leading to premature failure and potential compressor damage.
• Install difficulty: 3/5 — Always disconnect power at the breaker and verify zero voltage with a multimeter before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. The contactor is located inside the condenser unit's electrical panel.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PH15NB04200GBBAA heat pump. Always verify your existing contactor's coil voltage and pole configuration against your unit's wiring diagram before ordering. Our technical team is available to confirm fitment — contact us before you buy if you have any questions.