OEM Carrier 2-Pole Contactor 40A 24V Coil (HN52TC040) for Model TCHC2550HECMRAY603

This OEM Carrier contactor (part number HN52TC040) is the factory-specified high-voltage switching relay for the Carrier TCHC2550HECMRAY603 system. The contactor acts as the main electrical gate between your 24V thermostat signal and the high-voltage power feeding the compressor and condenser fan. When the thermostat calls for cooling or heating, the 24V coil energizes and pulls in the contacts — allowing line voltage to flow. When the contactor fails, the most common symptoms are an air conditioning system that won't turn on at all, audible humming or chattering at the unit without cooling, or burned/pitted contact points visible upon inspection.

• 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 manufactured to exact factory tolerances. Generic contactors frequently use lower-grade contact materials that pit and arc faster under repetitive load cycling, leading to premature failure — especially in high-run-time climates.
• Install Difficulty: 2/5 — Always disconnect power at both the disconnect box and the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and wire labels or tape. Photograph all wiring before removal. The contactor is typically secured with two screws in the control panel.
• Warranty: 1-year OEM factory warranty. In-stock orders ship the same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier TCHC2550HECMRAY603. Always verify the pole count, amperage, and coil voltage against your unit's data plate and existing contactor before ordering. Our technical team is available to confirm fitment — reach out before you order if you have any questions. Order now and get same-day shipping on all in-stock parts.