OEM Carrier 1-Pole 30 Amp Contactor (HN51KC024) for Model PH10JA042000ACAA

This OEM single-pole contactor is the factory-specified replacement part for the Carrier PH10JA042000ACAA packaged unit. The contactor acts as a high-voltage relay, energized by the 24V control circuit to connect line voltage to the compressor and/or fan motor whenever there is a call for cooling or heating. When the contactor fails, you'll typically experience the unit refusing to turn on, audible chattering or humming from the control compartment, contacts that weld shut causing the unit to run continuously, or a complete loss of cooling with the air handler still running.

• Specs: 1-Pole configuration | 24 VAC coil voltage | 30 FLA (Full Load Amps) | 150 LRA (Locked Rotor Amps) | 50/60 Hz | OEM Part# HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact factory specifications. Generic contactors often use inferior contact materials prone to pitting and arcing, accelerating compressor wear and risking premature failure under peak summer loads.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Always photograph all wiring before disconnecting — coil polarity and load/line orientation matter. Verify 24V coil pull-in after reinstallation.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier model PH10JA042000ACAA. Cross-references include P282-0311, HN51CC024, P282-1304, and P282-1305. Verify your unit's data plate and wiring diagram before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today.