OEM Carrier 2-Pole Contactor 40 Amp 24V Coil for Model TCHC0250HEFMRAF511

This OEM contactor (part number HN52TC040) is the factory-specified replacement for the Carrier TCHC0250HEFMRAF511. The contactor is a high-voltage relay that acts as the main power switch for your system's compressor and condenser fan motor. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, closing the high-voltage contacts to start the compressor. A failed contactor is one of the most common reasons an air conditioner or heat pump simply won't turn on — symptoms include the outdoor unit not starting, a chattering or buzzing sound from the contactor, visibly burned or pitted contact points, or the system tripping on high-pressure lockout.

• Specs: 2-pole | 40 FLA (Full Load Amps) | 24V 50/60Hz coil | Direct OEM drop-in replacement for Carrier HN52TC040
• OEM vs Generic: OEM contactors are manufactured to exact Carrier factory tolerances for contact gap, coil pull-in voltage, and arc suppression. Generic contactors often use lower-grade contact materials that pit and weld faster under high-cycle loads, risking compressor damage.
• Install difficulty: 2/5 — Always disconnect power at the breaker and discharge any capacitors before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. The contactor is typically secured with two screws inside the electrical compartment of the outdoor unit.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as an exact OEM replacement for Carrier model TCHC0250HEFMRAF511. Verify pole count, amperage, and coil voltage on your unit's data plate before ordering. Our team is available to confirm fitment — order with confidence and get your system back up and running today.