OEM Carrier 2-Pole Contactor 40 Amp 24V Coil for Model TCHC0250HEFMRAF621

This is the genuine OEM Carrier contactor (part number HN52TC040), factory-specified for the TCHC0250HEFMRAF621 heat pump system. The contactor acts as a high-voltage relay, switching line-voltage power to the compressor and condenser fan motor whenever the thermostat calls for cooling or heating. When the contactor fails — due to worn contacts, a burned-out 24V coil, or pitted contact surfaces — the system will not start at all, or may run continuously without cycling off. Replacing it with the correct OEM part ensures proper coil pull-in voltage, rated ampacity, and reliable switching under load.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V 50/60Hz Coil | 240/277V load voltage | Factory OEM tolerance — direct drop-in replacement
• OEM vs Generic: OEM contactors feature precise coil winding resistance and silver-alloy contact surfaces rated to factory spec. Generic aftermarket contactors often use substandard contact materials that pit and arc prematurely, reducing service life and risking compressor damage.
• Install difficulty: 2/5 — Always shut off power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Verify 24V coil signal from thermostat before condemning the contactor.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model TCHC0250HEFMRAF621. Always verify amperage rating and coil voltage against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back up and running fast.