OEM Carrier 2-Pole Contactor 40 Amp 24V for Model TCHC2550HECMRSP501

This is the genuine OEM Carrier contactor (part number HN52TC040), factory-specified for the Carrier TCHC2550HECMRSP501 heat pump system. The contactor is the high-voltage relay that bridges line voltage to your compressor and condenser fan motor whenever the thermostat calls for cooling or heating. When it fails, the result is often complete system shutdown — the outdoor unit simply won't energize, leaving the air handler running but producing no conditioned air. Pitted, fused, or burned contacts are the most common failure mode, and replacement is one of the most frequent service calls in HVAC.

• Specs: 2-Pole | 40 FLA (Full Load Amps) | 24V 50/60Hz coil | 240/277V switching voltage | Factory-matched OEM tolerances
• OEM vs Generic: Genuine Carrier OEM contactors use silver-alloy contacts rated for thousands of switching cycles. Generic contactors often use inferior contact materials that pit and fuse prematurely, leading to repeat failures within a single season.
• Install difficulty: 2/5 — Always disconnect power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removal. Discharge any capacitors in the unit before working near them. Swap wires one-at-a-time to avoid miswiring.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier TCHC2550HECMRSP501 heat pump system. Always verify the 2-pole, 40A, 24V coil specification against your unit's wiring diagram or data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before your order ships — no guesswork required.