OEM Carrier Contactor 24V Coil 2-Pole for Model PY3PNA024060AA

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier PY3PNA024060AA packaged unit. The contactor is the high-voltage switching relay that receives a 24V signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When it fails — whether due to pitted contacts, a burnt coil, or contacts that weld shut — the result is either a system that won't turn on at all, one that won't turn off, or one that buzzes and trips the breaker. Replacing the contactor is one of the most common and cost-effective HVAC repairs available.

• Specs: 2-Pole | 24V AC coil voltage | 30–40A rated contacts | Direct OEM factory replacement for part number HN51KB024
• OEM vs Generic: This OEM contactor is manufactured to Carrier's exact coil resistance and contact gap specifications. Generic contactors frequently feature lower-grade contact materials that arc, pit, and fail prematurely — especially under the high inrush current of a compressor start.
• Install difficulty: 2/5 — Always disconnect power at the disconnect box and breaker before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Allow 5 minutes after power-off for capacitors to discharge.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM drop-in replacement for the Carrier PY3PNA024060AA packaged unit. Verify coil voltage (24V) and pole count on your existing contactor's data label before ordering. If you need help confirming fitment, our HVAC parts specialists are available to verify compatibility before you purchase.