OEM Carrier Contactor 24V Coil 2-Pole for Model PH10JA04200GAHAA

This OEM contactor (part number HN51KC024) is the factory-specified high-voltage relay for the Carrier PH10JA04200GAHAA unit. The contactor acts as the primary switching device in the condensing section, receiving a low-voltage (24V) signal from the thermostat or control board and closing its high-voltage contacts to energize the compressor and condenser fan motor. When the contactor fails — whether through pitted or burned contacts, a stuck plunger, or a failed coil — the most common symptom is an air conditioning system that simply won't turn on, or one that runs continuously even when cooling is not called for.

• Specs: 24V AC coil | 2-pole configuration | Factory OEM replacement | Rated for R-410A system loads | Matches original contact gap and pull-in voltage specifications
• OEM vs Generic: This is a genuine OEM Carrier contactor engineered to exact factory tolerances. Aftermarket contactors often use lower-grade contact materials that pit and burn faster under high-amperage switching loads, leading to premature failure and potential compressor damage.
• Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before beginning work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal to ensure correct reinstallation.
• Warranty: Backed by a 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PH10JA04200GAHAA. Always verify the existing contactor's coil voltage (24V), pole configuration (2-pole), and amperage rating against your unit's data plate prior to ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back up and running fast.