OEM Carrier Single-Pole Contactor 30 Amp 24V — HN51KC024 for Model PH13NB042000AAAA

This is the genuine OEM factory-authorized replacement contactor for the Carrier PH13NB042000AAAA heat pump. The contactor is a high-voltage relay that engages the compressor and condenser fan circuit every time your thermostat sends a 24V cooling or heating call. Over time, contacts pit and burn from repeated arcing, or the coil can open entirely — resulting in an outdoor unit that simply won't energize. Common failure symptoms include the system not turning on at all, the compressor humming briefly then cutting out, or visible burn marks and pitting on the contact faces.

• Specs: 1-Pole | 24 VAC coil voltage | 30 Amp FLA / 150 Amp LRA | 50/60 Hz | OEM part number HN51KC024
• OEM vs Generic: Factory-authorized OEM contactors are built to exact Carrier tolerances with silver-alloy contact tips rated for the precise amp draw of your PH13NB042000AAAA compressor. Generic contactors often use inferior contact material that pits faster, shortening compressor life and risking nuisance lockouts.
• Install difficulty: 2/5 — Shut off all power to the unit and discharge any stored capacitor charge before opening the electrical compartment. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter. Always photograph all wiring connections before disconnecting the old contactor. Verify 24V coil pull-in after installation with a call from the thermostat.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NB042000AAAA. Replaces cross-reference part numbers including HN51CC024, P282-1304, P282-1305, and P282-0311. Always verify your unit's data plate and wiring diagram before ordering to confirm 1-pole, 24V coil configuration. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get this part shipped to your door fast.