OEM Carrier 2-Pole Contactor 40 Amp 24V Coil — HN52TC040 for Model TCHC2550HECMRAH102

This is the factory OEM replacement contactor for the Carrier TCHC2550HECMRAH102 heat pump system. The contactor is the high-voltage relay that the thermostat's 24V control signal energizes to switch line voltage power to the compressor and condenser fan motor. When a contactor fails, the system may hum and do nothing, fail to respond to a call for cooling or heating, or trip the breaker repeatedly due to worn or pitted contacts that arc under load.

• Specs: 2-Pole | 40A FLA (Full Load Amps) | 24V AC 50/60Hz Coil | 240/277V load voltage | OEM Part Number HN52TC040 — factory-matched for direct drop-in installation
• OEM vs Generic: OEM Carrier contactors are manufactured to exact pole spacing, coil impedance, and contact material specifications. Generic substitutes frequently use thinner contact silver alloy, leading to premature pitting, coil burn-out, and nuisance lockouts within one to two seasons.
• Install Difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph or label all wires before removal. Verify coil draws to 24V with a multimeter before condemning the part.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Directly replaces OEM part number HN52TC040 as installed on the Carrier TCHC2550HECMRAH102 heat pump. Confirm your unit's data plate shows a 2-pole, 40A contactor with a 24V coil before ordering. Our parts specialists are available to verify fitment prior to purchase — order today and get same-day shipping.