OEM Carrier 2-Pole 40 Amp 24V Contactor (HN52TC040) for Model TCHC2550HECMRAY103

This is the genuine OEM replacement contactor for the Carrier TCHC2550HECMRAY103 heat pump system. The contactor is a high-voltage relay that receives a low-voltage (24V) signal from the thermostat and closes the circuit to supply line voltage to the compressor and condenser fan motor. When the contactor fails, you'll typically see the outdoor unit fail to energize entirely, hear a chattering or humming at the contactor, or notice pitted and burned contacts from repeated arcing — all resulting in a no-cool or no-heat condition.

• Specs: 2-Pole | 40A FLA (Full Load Amps) | 24V 50/60Hz Coil | 240/277V Load Voltage | OEM Part Number: HN52TC040
• OEM vs Generic: This is a genuine Carrier OEM contactor with factory-spec coil resistance and contact ratings. Generic contactors often use lower-grade silver-alloy contacts that pit and fail faster under the high-inrush current of compressor startup.
• Install difficulty: 2/5 — Always disconnect power at the breaker and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting terminals.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier TCHC2550HECMRAY103 heat pump system. Verify your existing contactor's pole count, amp rating, and coil voltage against your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back up and running fast.