OEM Carrier 2-Pole Contactor 40 Amp 24V Coil — HN52TC040 for Model TCHC0250HEFMRAF111

This is the genuine OEM replacement contactor for the Carrier TCHC0250HEFMRAF111 unit. The contactor is the high-voltage relay that bridges 240V line power to the compressor and condenser fan motor every time your thermostat calls for cooling. When it fails, the result is typically an AC unit that hums but never starts, trips a breaker repeatedly, or simply will not energize at all — even with the thermostat calling. Pitted or burned contacts are the most common visible symptom; a chattering sound at startup is an early warning sign.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V 50/60 Hz coil voltage | 240/277V load voltage | Factory-matched OEM contact material and spring tension
• OEM vs Generic: OEM contactors like this HN52TC040 use factory-spec silver-alloy contacts rated for exact cycle life. Generic contactors often use inferior contact materials that arc and pit faster, shortening compressor life and risking nuisance lockouts.
• Install difficulty: 2/5 — Always shut off power at both the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Confirm 24V coil signal from thermostat before replacing the contactor.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model TCHC0250HEFMRAF111. Verify 2-pole configuration, 40A rating, and 24V coil voltage against your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists are available to verify compatibility before you buy — order with confidence and get it right the first time.