OEM Carrier 2-Pole 40 Amp 24V Contactor HN52TC040 for Model TCHC2550HECMRLP502

This is the factory-specified OEM replacement contactor for the Carrier TCHC2550HECMRLP502 heat pump system. The contactor is the high-voltage relay that receives a low-voltage (24V) signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When this component fails, the system will either not respond to a call for cooling or heating at all, or may intermittently drop out mid-cycle — leaving you with no comfort and a system stuck in lockout.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V AC Coil | 50/60 Hz | 240/277V load voltage | Direct OEM replacement for part number HN52TC040
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory amperage and coil pull-in tolerances. Generic contactors often have undersized contacts that pit and arc under repeated compressor load cycling, causing premature failure and potential compressor damage.
• Install Difficulty: 3/5 — Always disconnect power at the disconnect box and confirm voltage is zero with a multimeter before working. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Line-voltage terminals are present — use caution.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model TCHC2550HECMRLP502. Verify your existing contactor's pole count, amperage rating, and coil voltage against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.