OEM Carrier 1-Pole Contactor 24V 25A — HN51KB024 for Model PY3GNA042060NA

This is the factory OEM replacement contactor for the Carrier PY3GNA042060NA packaged HVAC unit. The contactor is the high-voltage relay that closes the circuit to your compressor and/or fan motor every time your thermostat calls for cooling. When the contactor fails — whether from burned or pitted contacts, a welded coil, or a failed coil winding — the result is an unresponsive system: the unit hums but never starts, or doesn't respond at all. Replacing a worn contactor is one of the most common and cost-effective HVAC repairs available.

• Specs: 1-Pole | 24V 50/60Hz coil | 25 FLA (Full Load Amps) | OEM part number HN51KB024 | Factory-matched fit and electrical rating
• OEM vs Generic: This is a genuine Carrier OEM contactor — not an aftermarket substitute. OEM contactors meet exact factory coil pull-in voltage and contact load ratings. Generic contactors may carry ±10–15% tolerance variances, increasing risk of premature contact welding or coil dropout under load.
• Install Difficulty: 2/5 — Shut off power at the disconnect and confirm zero voltage with a meter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always photograph all wiring connections before removing the old contactor to ensure correct reinstallation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cut-off.

Compatibility: Engineered for Carrier model PY3GNA042060NA. Verify the part number on your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — don't guess on a high-voltage component. Order now and get same-day shipping on all in-stock OEM parts.