OEM Carrier 2-Pole Contactor 40 Amp 24V for Model TCHC2550HECMRSH501

This OEM Carrier contactor (part number HN52TC040) is the factory-specified replacement for the Carrier TCHC2550HECMRSH501 heat pump system. The contactor is the high-voltage relay that bridges 240V line power to the compressor and condenser fan motor each time the thermostat calls for cooling or heating. When the 24V control circuit energizes the coil, the contactor pulls in and closes the high-voltage circuit. A failing contactor is one of the most common causes of a system that hums but won't start, trips a breaker, or simply has no response from the outdoor unit.

• Specs: 2-pole | 40 FLA (Full Load Amps) | 24V 50/60Hz coil | Definite-purpose contactor | Factory OEM direct fit for TCHC2550HECMRSH501
• OEM vs Generic: OEM contactors use factory-spec contact material and coil winding, ensuring pull-in voltage thresholds and contact durability match original design. Generic contactors often use lower-grade contact alloys that pit and weld faster under high-cycle heat pump loads.
• 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 existing wiring before disconnecting any leads. The contactor mounts with two screws and wires terminate on labeled screw lugs.
• Warranty: 1-year OEM factory warranty against defects. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Engineered as a drop-in OEM replacement for the Carrier TCHC2550HECMRSH501 heat pump. Always verify the pole count, amp rating, and coil voltage on your existing contactor's data label before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.