OEM Carrier 2-Pole Contactor 40A 24V Coil — HN52TC040 for Model TCHC2550HECMRSH502

This is the genuine OEM replacement contactor for the Carrier TCHC2550HECMRSH502 heat pump system. The contactor is the high-voltage relay that bridges 240V power to the compressor and condenser fan when the thermostat calls for cooling or heating. When it fails, the most common symptom is an AC or heat pump that simply won't turn on — the low-voltage control signal is present, but the compressor never engages. You may also notice pitting or burning on the contact points, chattering or buzzing sounds, or the system running continuously without cycling off.

• Specs: 2-Pole | 40A FLA (Full Load Amps) | 24V 50/60Hz coil voltage | 240/277V load voltage | OEM Part Number: HN52TC040 | Replaces: C2119C, C2119, CD-HCC-060
• OEM vs Generic: This factory-original Carrier contactor is manufactured to exact contact gap, coil pull-in voltage, and silver-alloy contact specifications. Generic contactors often use lower-grade contact materials that arc and pit prematurely, leading to repeat failures and potential compressor damage.
• Install Difficulty: 2/5 — Always shut off power at both the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire terminations before disconnecting. Discharge any residual voltage and verify with a non-contact tester before touching terminals.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model TCHC2550HECMRSH502. Verify your existing contactor's pole count (2-pole), amperage (40A FLA), and coil voltage (24V) against your unit's data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — order with confidence and get back to comfort fast.