OEM Carrier 1-Pole Contactor 25 Amp 24V Coil for Model PY3PNA036090NB

This is the genuine OEM Carrier contactor (part #HN51KB024) factory-specified for the Carrier PY3PNA036090NB packaged unit. The contactor is the high-voltage relay at the heart of your system's switching circuit: when the thermostat calls for cooling, the 24V control board sends a low-voltage signal to the contactor coil, which then closes the high-voltage circuit to power the compressor and condenser fan motor. A failed contactor is one of the most common reasons an air conditioner will hum but refuse to start, trip repeatedly, or simply not respond to a cooling call at all. Pitted or welded contact points are the most frequent failure mode, caused by years of electrical arcing under load.

• Specs: 1-Pole | 25 Amp | 24V Coil | OEM Part #HN51KB024 | Factory-matched electrical ratings for PY3PNA036090NB
• OEM vs Generic: This is a genuine Carrier OEM contactor — not an aftermarket substitute. OEM contact points meet factory arc-resistance standards, ensuring accurate switching life. Generic contactors often use inferior silver-alloy contacts that pit and weld prematurely, leading to repeat failures.
• Install Difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Swap wires one at a time to avoid miswiring. Test for continuity after installation before restoring power.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PY3PNA036090NB. Always verify your unit's data plate matches the 1-pole, 25A, 24V coil specification before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions. Order today and get back to comfort fast.