OEM Carrier 1-Pole Contactor 30 Amp 24V — HN51KC024 for Model PY4GNAA36090AA

This OEM contactor (part# HN51KC024) is the factory-specified replacement for the Carrier PY4GNAA36090AA packaged unit. The contactor is a high-voltage relay that physically closes the circuit to send line voltage to the compressor and/or condenser fan motor whenever the 24V thermostat signal calls for cooling. When the contactor fails — through burned contacts, pitted surfaces, a stuck plunger, or an open coil — the system will not respond to cooling calls, leaving you with a unit that hums but won't start, or one that doesn't respond at all.

• Specs: 1-Pole configuration | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | OEM part# HN51KC024
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact factory tolerances. Generic contactors often use lower-grade contact materials that pit and weld faster under cycling loads, shortening overall system life.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal — coil polarity matters. Verify 24V coil pull-in after installation with a cooling call from the thermostat.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY4GNAA36090AA. Also cross-references to P282-0311, HN51CC024, P282-1304, P282-1305, 72930DP1, and 72931DP1. Always verify your unit's wiring diagram and existing contactor specs before ordering. Our team is available to confirm fitment — contact us before you buy.