OEM Carrier Single-Pole Contactor 30 Amp 24V Coil (HN51KC024) for Model PH10JA048000AAAA

This is the genuine OEM Carrier contactor (part number HN51KC024), factory-specified for the Carrier PH10JA048000AAAA packaged heat pump unit. The contactor is a high-voltage relay that receives a low-voltage (24V) signal from the thermostat and switches line-voltage power to the compressor and/or fan motor. When the contactor fails — due to pitted or burned contacts, a welded-shut coil, or an open coil — the unit will either refuse to turn on entirely, run continuously without shutting off, or trip the breaker. Replacing a faulty contactor is one of the most common and cost-effective HVAC repairs available.

• Specs: 1-pole configuration | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24 VAC coil voltage | 50/60 Hz rated | Factory-matched OEM tolerances
• OEM vs Generic: This genuine OEM Carrier contactor is built to exact factory specifications for the PH10JA048000AAAA, ensuring correct coil pull-in voltage, contact gap, and amp rating. Generic contactors may use thinner contact material, leading to premature pitting and repeat failures — especially under heavy compressor load.
• Install difficulty: 2/5 — Always disconnect and lock out power at the breaker before starting. Photograph all existing wiring before disconnecting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Confirm 24V coil signal at the contactor terminals before replacing to rule out a thermostat or control board issue.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PH10JA048000AAAA packaged heat pump. Also cross-references with Bryant, Payne, and Day & Night units calling for HN51KC024. Always verify your unit's wiring diagram and parts list before ordering. Our fitment team is available to confirm compatibility — contact us before you buy if you have any doubts.