OEM Carrier 2-Pole Contactor 40 Amp 24V for Model TCHC0250HEFMRAF531

This OEM Carrier contactor (part number HN52TC040) is the factory-specified high-voltage relay for the Carrier TCHC0250HEFMRAF531 system. The contactor acts as the primary switching device between the 24V thermostat control signal and the high-voltage compressor and condenser fan circuits. When the thermostat calls for cooling, the 24V coil energizes, pulling in the contacts and delivering line voltage to your compressor and fan motor. A failed contactor is one of the most common reasons an air conditioning system hums at the outdoor unit but never starts — or fails to respond to the thermostat entirely.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V 50/60Hz Coil | OEM Part Number HN52TC040 | Factory drop-in replacement
• OEM vs Generic: This is a genuine Carrier OEM contactor, manufactured to exact factory tolerances. Generic contactors may have undersized contacts that arc and pit prematurely under high-load cycling, leading to repeat failures within one season.
• Install difficulty: 2/5 — Always disconnect power at the breaker and confirm voltage is absent with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting the old unit. The contactor is typically located in the electrical compartment of the outdoor condenser.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our warehouse.

Compatibility: Engineered for the Carrier model TCHC0250HEFMRAF531. Verify your existing contactor's pole count, amperage rating, and coil voltage on the unit's data plate or wiring diagram before ordering. Our technical team is available to confirm fitment — reach out before you buy if you have any questions. In-stock and ready to ship today.