OEM Carrier 1-Pole Contactor 25A 24V Coil (HN51KB024) for Model PY3GNA036090AA

This is the factory OEM replacement contactor for the Carrier PY3GNA036090AA packaged unit. The contactor is the high-voltage switching relay that closes when your thermostat sends a 24V call for cooling, energizing the compressor and/or condenser fan motor. When the contactor fails — through burned contacts, a welded coil, or a worn armature — the system will either fail to start, drop out unexpectedly mid-cycle, or run continuously without responding to thermostat commands.

• Specs: 1-Pole | 24V AC Coil (50/60Hz) | 25A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | OEM Part Number: HN51KB024
• OEM vs Generic: This is the genuine Carrier OEM contactor, manufactured to exact factory tolerances. Generic contactors often use lower-grade contact materials that pit, arc, and weld more quickly — especially under the high-inrush loads of a compressor start. OEM means longer service life and no compatibility guesswork.
• Install difficulty: 2/5 — Shut off power at the disconnect AND the breaker before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always photograph existing wiring before removing terminals — coil polarity and load wire positions must be preserved.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as the direct OEM fit for Carrier model PY3GNA036090AA packaged units. Verify your unit's data plate and existing contactor specifications (poles, coil voltage, amp rating) before ordering. Not sure? Our HVAC parts specialists confirm fitment before you buy — reach out before placing your order.