OEM Carrier Single-Pole Contactor 1-Pole 24V 30 Amp (HN51KC024) for Model PH4GNAA24000AA

This is the genuine OEM single-pole contactor factory-specified for the Carrier PH4GNAA24000AA packaged unit. The contactor is the high-voltage relay that bridges line voltage to the compressor and condenser fan motor whenever the thermostat sends a 24V call for cooling. When it fails, symptoms range from the system refusing to turn on, audible chattering or humming at the contactor, pitted or burned contact faces, or — in welded-contact failure — a unit that runs continuously and won't shut off. Prompt replacement protects the compressor from short-cycling damage and restores normal operation.

• Specs: 1-Pole | 24 VAC Coil Voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | OEM Part# HN51KC024
• OEM vs Generic: This factory-authorized part meets exact Carrier contact material and coil resistance specifications. Generic contactors frequently use lower-grade silver-alloy contacts that pit faster under compressor inrush current, shortening service life and risking welded contacts.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before opening the control compartment. Photograph all wiring before disconnecting. Tools needed: flat-head 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: Directly fits Carrier model PH4GNAA24000AA packaged units. Also replaces cross-reference part numbers including HN51CC024, P282-1304, P282-1305, P282-0311, 301362-101, and 301323-101. Always verify your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — reach out before you order.