OEM Carrier 1-Pole 30 Amp Contactor HN51KC024 for Model PH12NA03600GAGAA

This is the genuine OEM replacement contactor for the Carrier PH12NA03600GAGAA split-system heat pump. The contactor is a high-voltage relay controlled by the 24V thermostat circuit; when the thermostat calls for cooling or heating, the 24VAC coil energizes and closes the contacts to send line voltage to the compressor. When a contactor fails, symptoms include the outdoor unit not turning on at all, the compressor humming but not starting, or visible pitting and burning on the contact surfaces. Replacing a worn contactor promptly prevents compressor damage from voltage fluctuations and arcing.

• Specs: 1-Pole configuration | 30 Amp rated load | 24 VAC coil voltage | 50/60 Hz | OEM part number HN51KC024
• OEM vs Generic: This is a genuine Carrier OEM contactor, factory-matched to the exact coil pull-in voltage and contact rating of your unit. Generic aftermarket contactors often use inferior contact alloys that pit faster and fail prematurely under compressor inrush loads.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Verify 24VAC coil pull-in after installation with thermostat call.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH12NA03600GAGAA split-system heat pump and other Carrier, Bryant, and Payne models specifying HN51KC024. Always verify your unit's wiring diagram and data plate before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by.