OEM Carrier 1-Pole Contactor 30A 24V Coil — HN51KC024 for Model PH1ZNA048000AAAA

This is the factory-specified OEM contactor for the Carrier PH1ZNA048000AAAA packaged heat pump unit. The contactor is the high-voltage switching relay that closes the compressor and condenser fan motor circuit every time your thermostat calls for cooling or heating. When the 24V control signal energizes the coil, the contacts slam shut and line voltage flows to the compressor. A failed contactor is one of the most common HVAC service calls — symptoms include a system that won't power on, audible chattering or humming from the cabinet, contacts that weld shut causing the unit to run continuously, or a burned coil that leaves the unit completely dead.

• Specs: 1-Pole | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24 VAC Coil | 50/60 Hz | OEM Part# HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact factory tolerances. Generic contactors often use thinner contact material that pits and welds faster under the high-inrush loads of a scroll compressor, shortening equipment life and voiding equipment warranties.
• Install Difficulty: 2/5 — Shut off power at both the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Swap wires one at a time to avoid miswiring. Verify 24V coil pull-in with a thermostat call after installation.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH1ZNA048000AAAA packaged heat pump units. This contactor is also widely cross-referenced for Carrier, Bryant, and Payne systems that specify part number HN51KC024 in their official parts list. Always confirm the part number against your unit's wiring diagram or data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy — contact us today and we'll ship your order the same day.