OEM Carrier 2-Pole Contactor 24V Coil for Model PY1PNA036060ADBA (HN51KB024)

This is the factory OEM replacement contactor for the Carrier PY1PNA036060ADBA packaged heat pump / split-system unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat or control board and closes to allow line-voltage power to flow to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the system will either refuse to start entirely, run continuously without shutting off, or produce a loud chattering hum from the electrical panel or air handler cabinet.

• Specs: OEM Part No. HN51KB024 | 2-Pole configuration | 24V control coil | Rated for standard residential/light-commercial load | Factory-matched contact material and coil pull-in voltage for precise switching
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory tolerances. Aftermarket contactors often use inferior contact alloys that pit and oxidize faster — especially under the high-amperage cycling demands of a compressor. OEM means longer service life and no comebacks.
• Install Difficulty: 3/5 — LINE-VOLTAGE HAZARD. Always shut off power at both the disconnect box and the breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm voltage and coil continuity), and a camera or phone to photograph all wiring before removal. Wires must be transferred one at a time to the replacement contactor terminals.
• Warranty: 1-year OEM manufacturer warranty against defects. Orders placed by 3 PM local time ship same business day from our stocked warehouse.

Compatibility: Designed and factory-specified for the Carrier PY1PNA036060ADBA. Always cross-reference the OEM part number (HN51KB024) printed on your existing contactor's label to confirm an exact match before installation. Not sure it fits? Our HVAC parts specialists verify fitment before every order — reach out before you buy.