OEM Carrier 3-Pole Contactor 24V 60 FLA for Model TCHC2550HECMRMP500

The Carrier HN53TZ024 is the factory-specified OEM 3-pole contactor for the TCHC2550HECMRMP500 commercial HVAC unit. The contactor acts as a high-voltage relay, receiving a 24V signal from the control board to close its poles and deliver line voltage to the compressor and associated loads. When this part fails — through pitted contacts, a burned coil, or a mechanically stuck armature — the unit will fail to start, run intermittently, or trip on high-pressure lockout. Replacing it with a genuine OEM part ensures the electrical timing and contact ratings match the factory specification exactly.

• Specs: 3-Pole (C-A1 configuration) | 24V AC 50/60 Hz coil | 60 FLA (Full Load Amps) | 75 Amp RES | Compatible with R-410A commercial systems | Weight: 1.49 lbs
• OEM vs Generic: This is a genuine Carrier OEM contactor — not an aftermarket substitute. OEM contacts are rated to exact FLA and RES tolerances for the TCHC2550HECMRMP500. Generic contactors often underrate contact surface area, leading to premature pitting under heavy commercial load cycles.
• Install difficulty: 3/5 — Commercial unit; requires lockout/tagout procedure before access. Tools needed: multimeter, flathead and Phillips screwdrivers, needle-nose pliers, wire labels. Photograph all wiring before disconnecting. Test coil resistance and contact continuity after installation before restoring power.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier TCHC2550HECMRMP500 commercial HVAC system. Also fits select 50HECMRLP and 50HECMRAH series units — verify your unit's data plate and existing contactor pole count, coil voltage, and FLA rating before ordering. Our fitment team is available to confirm compatibility prior to purchase.