OEM Carrier 2-Pole Contactor 40 Amp 24V Coil for Model TCHC0250HEFMRAF512

This OEM 2-pole contactor (part number HN52TC040) is the factory-specified high-voltage relay for the Carrier TCHC0250HEFMRAF512 system. The contactor acts as the primary switching device that routes high-voltage power to the compressor and condenser fan motor whenever the thermostat calls for cooling. When a contactor fails — due to worn contacts, a burned coil, or stuck/welded poles — the most common symptoms are a system that won't turn on at all, a compressor that hums without starting, or an outdoor unit that runs continuously even when cooling is not being called for.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V 50/60Hz coil voltage | 240/277V rated | OEM part number HN52TC040
• OEM vs Generic: This is a genuine Carrier OEM contactor built to factory contact gap, coil pull-in voltage, and arc-suppression specifications. Generic contactors often use lower-grade silver-alloy contacts that pit and weld faster under high inrush loads, shortening service life significantly.
• Install difficulty: 2/5 — Always disconnect power at the disconnect box and verify voltage is zero with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor to ensure correct reassembly.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier TCHC0250HEFMRAF512. Always verify the pole count, amperage rating, and coil voltage against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your system back online fast.