OEM Carrier 1-Pole 30 Amp Contactor HN51KC024 for Model PH13NR048000AHAA

This is the factory-specified OEM contactor for the Carrier PH13NR048000AHAA heat pump. The contactor is the high-voltage relay that receives a low-voltage (24V) signal from the thermostat or control board and closes the circuit to deliver line voltage to the compressor and condenser fan motor. When the contactor fails, common symptoms include the unit failing to start, the compressor running continuously even when cooling isn't called for, audible chattering or humming from the electrical compartment, or visible pitting and burning on the contact faces. Replacing a worn contactor promptly prevents downstream damage to the compressor — one of the most expensive components in the system.

• Specs: 1-Pole | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24 VAC Coil Voltage | 50/60 Hz | OEM Part Number HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact coil impedance and contact silver-alloy specifications. Generic contactors frequently use thinner contact wafers and lower-grade coil windings that accelerate pitting and increase pull-in voltage variance — shortening compressor life.
• Install Difficulty: 2/5 — Disconnect and lock out all power before opening the electrical compartment. Photograph all wiring before removing any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V coil pull-in after installation before restoring line voltage.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NR048000AHAA (4-ton R-410A single-stage heat pump). Always confirm the part number on your unit's wiring diagram or data plate before ordering. Need fitment help? Our HVAC parts specialists verify compatibility before you buy.