OEM Carrier Single-Pole Contactor 24V 25A — Model PY3GNA030060AA (HN51KB024)

This OEM single-pole contactor is the factory-specified switching component for the Carrier PY3GNA030060AA condensing unit. The contactor acts as a high-voltage relay: when the thermostat sends a 24V signal, the contactor coil energizes, closing the high-voltage circuit to power the compressor and/or condenser fan motor. When the contactor fails — through pitted or welded contacts, a burned coil, or a chattering coil — the result is an AC system that won't start, runs continuously without shutting off, or trips the breaker repeatedly.

• Specs: 1-Pole configuration | 24V AC 50/60Hz coil | 25 FLA (Full Load Amps) | OEM part number HN51KB024 | Factory-matched contact material and coil resistance
• OEM vs Generic: OEM contactors use factory-spec silver-alloy contact tips and precision-wound coils, delivering consistent pull-in voltage and long contact life. Generic contactors often use lower-grade contact material that pits faster under high inrush current, leading to premature failure and compressor damage.
• Install difficulty: 2/5 — Always disconnect and lock out 240V power at the disconnect box before opening the unit. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Verify the 24V coil pulls in cleanly after installation with a voltmeter before closing the panel.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse — order before 3PM local time for guaranteed today dispatch.

Compatibility: Engineered and factory-matched for Carrier model PY3GNA030060AA. Always verify the OEM part number on your existing contactor's label or the unit's wiring diagram before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us before placing your order.