OEM Carrier Single-Pole Contactor 30A 24V Coil — HN51KC024 for Model PH16NA03600GBBAA

This OEM single-pole contactor is the factory-specified replacement part HN51KC024 for the Carrier PH16NA03600GBBAA heat pump condensing unit. The contactor acts as a high-voltage relay controlled by your 24V thermostat signal — when a cooling call is made, the contactor closes and delivers line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an AC or heat pump system won't start, hums without running, stays on after shutdown, or trips a breaker. Inspect contacts for pitting, burning, or welding, and replace immediately if any of these symptoms are present.

• Specs: 1-Pole | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24 VAC Coil Voltage | 50/60 Hz | Screw terminal connections | R-410A system compatible
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part (HN51KC024), engineered to exact contact gap tolerances, coil impedance, and thermal ratings. Generic aftermarket contactors often use lower-grade silver alloy contacts that pit and weld faster under compressor start loads — especially on systems above 3 tons.
• Install difficulty: 2/5 — Always disconnect all power at the disconnect box before opening the control compartment. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removal. Verify 24V coil pull-in after installation with a thermostat cooling call.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Factory-specified for the Carrier PH16NA03600GBBAA single-stage heat pump condensing unit. Also cross-references to P282-0311, HN51CC024, P282-1304, P282-1305, 301362-101, and 301323-101. Always verify the part number against your unit's wiring diagram and data plate before ordering. Our fitment team is available to confirm compatibility before you buy.