OEM Carrier Single-Pole Contactor 1P 30A 24V for Model PH15NB03600GBBAA

This is the genuine OEM replacement contactor for the Carrier PH15NB03600GBBAA heat pump. The contactor is the high-voltage switching relay at the heart of your outdoor unit — when the thermostat sends a 24V signal, the contactor closes and delivers line-voltage power to the compressor. A failed contactor is one of the most common reasons an AC or heat pump stops cooling: symptoms include the system not turning on at all, a loud humming from the contactor coil with no compressor startup, or — in the case of welded contacts — the compressor running continuously even when cooling isn't called for.

• Specs: 1-Pole | 30A FLA / 150A LRA | 24 VAC coil voltage | 50/60 Hz | OEM part number HN51KC024
• OEM vs Generic: This is a Factory Authorized Part built to exact Carrier specifications. Generic contactors may use lower-grade contact material that pits faster under high-cycle conditions, shortening service life — especially critical on heat pumps that run year-round.
• Install difficulty: 2/5 — Always disconnect and lock out power at the disconnect box before opening the unit. Photograph all wiring before removing the old contactor. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, non-contact voltage tester. After installation, verify 24V pull-in with a thermostat call before buttoning up the panel.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH15NB03600GBBAA. Also used across Carrier, Bryant, and Payne residential and light-commercial AC and heat pump systems that call out part number HN51KC024. Always cross-reference your unit's data plate and wiring diagram before ordering. Our parts specialists are available to verify fitment — contact us before you order if you have any questions.