OEM Carrier 2-Pole Contactor 24V for Model PY3GNA030060AB — HN51KB024

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier PY3GNA030060AB packaged unit. The contactor is a high-voltage relay that acts as the primary switch between the 24V control circuit and the high-voltage compressor and condenser fan motor circuits. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts to send line voltage to the compressor. A failed contactor typically causes the entire outdoor unit to not turn on, or may result in intermittent operation, visible pitting/burning on the contact points, or a buzzing sound without startup.

• Specs: 24V AC coil voltage | 2-pole configuration | Factory-matched contact rating | OEM part number HN51KB024 | Direct drop-in replacement
• OEM vs Generic: This OEM contactor is manufactured to Carrier's exact coil pull-in voltage and contact current specifications. Generic contactors often use lower-grade contact materials that pit and oxidize faster, shortening service life in high-cycle applications.
• Install Difficulty: 2/5 — Always disconnect power at the breaker and verify zero voltage before starting. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY3GNA030060AB packaged unit. Always verify coil voltage and pole configuration against your unit's data plate before ordering. Need fitment confirmation? Our HVAC specialists verify compatibility before your order ships — contact us anytime.