OEM Carrier Contactor 24V 2-Pole for Model PY3PNA024040NA (HN51KB024)

This is the factory OEM replacement contactor for the Carrier PY3PNA024040NA packaged unit. The contactor is the high-voltage relay that closes the circuit between line voltage and your compressor and condenser fan motor when the thermostat calls for cooling. A failed contactor is one of the most common causes of a system that powers on at the thermostat but produces no cooling — often accompanied by a buzzing or chattering sound at the outdoor unit, or complete silence with no compressor response.

• Specs: 2-Pole | 24V coil voltage | Factory-rated amperage for Carrier PY3PNA024040NA | OEM part number HN51KB024 | Direct drop-in replacement, no modification required
• OEM vs Generic: This is a genuine OEM Carrier contactor manufactured to exact factory specifications. OEM contactors feature precision contact tips rated for the correct inrush and running current of your specific unit — generic substitutes often use lower-grade contact materials that pit and burn faster, leading to premature failure and potential compressor damage.
• Install difficulty: 2/5 — Always disconnect power at the breaker AND verify zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring connections before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier PY3PNA024040NA packaged unit. Always verify coil voltage and pole configuration on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.