OEM Carrier 1-Pole Contactor 25A 24V Coil for Model PY3PNA024060AB

This is the genuine OEM replacement contactor for the Carrier PY3PNA024060AB split-system air conditioner, factory part number HN51KB024. The contactor is the high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to energize the compressor and condenser fan motor. When the contactor fails, the most common symptoms are an AC unit that won't turn on at all, a compressor that hums but doesn't start, or contacts that are visibly burned, pitted, or welded shut — keeping the system energized even when cooling is not called for.

• Specs: 1 Pole (Single Pole) | 24V AC Coil, 50/60 Hz | 25 FLA (Full Load Amps) | 35 RES | Direct OEM drop-in replacement for Carrier, Bryant, and Payne equipment
• OEM vs Generic: The factory HN51KB024 contactor is manufactured to Carrier's exact contact gap, coil pull-in voltage, and current rating tolerances. Generic contactors frequently use lower-grade contact material that pits and welds faster under the high inrush current of a compressor start, leading to premature failure and potential compressor damage.
• Install difficulty: 2/5 — Always shut off power at both the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting — thermostat (Y) wires attach to the coil terminals, and line/load wires must be re-landed correctly. Verify contacts are fully opening and closing after installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: This contactor is the direct OEM replacement for Carrier PY3PNA024060AB split-system condensers. Also used across a wide range of Carrier, Bryant, and Payne air conditioner and heat pump condensing units that specify a 1-pole, 24V coil, 25 FLA contactor. Always verify your existing contactor's pole count, coil voltage, and amp rating against your unit's wiring diagram before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy.