OEM Carrier 2-Pole Contactor 40FLA 24V Coil for Model TCHC0250HEFMRAF131

This is the genuine OEM replacement contactor for the Carrier TCHC0250HEFMRAF131, factory part number HN52TC040. The contactor is the high-voltage relay in your condensing unit that receives a 24V signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When it fails — due to pitted contacts, a burned coil, or a stuck/welded set of contacts — the unit may refuse to start, hum without engaging, run continuously without shutting off, or trip the breaker repeatedly.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V AC Coil | 208–230V Switching Voltage | 50/60 Hz | Single Phase | Definite Purpose Contactor
• OEM vs Generic: This is a genuine Carrier factory-authorized part. OEM contactors are manufactured to exact contact gap, coil pull-in voltage, and arc-quench tolerances. Generic substitutes often use thinner contact material, leading to premature pitting and shorter service life under high-load cycling.
• Install difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Label each wire to its terminal (L1, L2, T1, T2) for correct reinstallation.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as the factory-specified contactor for Carrier model TCHC0250HEFMRAF131. Verify coil voltage (24V) and amperage rating (40 FLA) against your unit's data plate before ordering. Cross-reference: HN52TC040 is also noted as equivalent to 310020Q18181CL. Our fitment team is available to confirm compatibility before you buy.