OEM Carrier Single-Pole Contactor 1-Pole 24V 30A for Model PH13NR018000AAAA (HN51KC024)

This OEM single-pole contactor is the factory-specified replacement for the Carrier PH13NR018000AAAA heat pump system. The contactor acts as a high-voltage relay, energized by the 24V thermostat signal to close the high-voltage circuit and power the compressor. When it fails, symptoms typically include the outdoor unit not turning on at all, audible chattering or humming from the contactor coil, the system running continuously and failing to shut off, or visible pitting and burning on the contact points. Replacing a worn contactor promptly protects the compressor from damaging voltage irregularities.

• Specs: 1-Pole configuration | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | OEM Part# HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact OEM specifications for your PH13NR018000AAAA unit. Generic contactors may vary in contact surface quality and coil pull-in voltage tolerance, risking premature failure under high summer loads.
• Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before touching any wiring. Photograph all line, load, and coil terminal connections before removal. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, multimeter. Verify 24V coil pull-in after installation with a thermostat call.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NR018000AAAA heat pump systems. Verify your unit's data plate lists part number HN51KC024 before ordering. Not sure if this is the right contactor for your unit? Contact our HVAC parts specialists — we verify fitment before you buy. Order now and ship today.