OEM Carrier Single-Pole Contactor 1-Pole 24V 30A for Model PH13NB036000AAAA

The Carrier HN51KC024 is the factory-specified single-pole contactor for the PH13NB036000AAAA heat pump condenser. The contactor acts as the primary high-voltage relay in your outdoor unit, receiving a 24V signal from the thermostat and closing to deliver line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or welded contacts, a burned coil, or a stuck plunger — the most common symptoms are an AC or heat pump that won't turn on at all, a unit that runs continuously and won't shut off, or a loud buzzing/chattering from the control compartment with no cooling or heating output.

• Specs: 1-Pole | 24 VAC Coil (50/60 Hz) | 30A FLA | 150A LRA | 240V Line Voltage | Normally Open | 1/4" Quick-Connect Coil Terminals | OEM Part # HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact OEM tolerances. Generic contactors may use thinner contact material and lower-grade coil wire, leading to premature pitting, coil burnout, and nuisance failures during peak cooling season.
• Install difficulty: 2/5 — Disconnect and lock out all power before opening the control compartment. Photograph all wiring before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V coil signal and confirm contact continuity). Swap line, load, and coil wires one at a time to avoid miswiring.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH13NB036000AAAA heat pump condenser. Verify your unit's wiring diagram and parts list before ordering — OEM part number HN51KC024 must appear on your unit's parts breakdown for confirmed fitment. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — just reach out before checkout.