OEM Carrier 3-Pole Contactor 24V 60 FLA for Model TCHC2550HECMRMH500

The Carrier HN53TZ024 is the factory-specified 3-pole contactor for the TCHC2550HECMRMH500 commercial packaged unit. The contactor acts as the high-voltage relay that closes the circuit to the compressor and other high-draw loads each time the thermostat calls for cooling or heating. When the contactor fails, common symptoms include the unit failing to start entirely, audible chattering or buzzing from the control panel, burnt or pitted contact tips visible on inspection, or the system tripping breakers due to a welded-contact fault. This is a high-cycle component in commercial applications and one of the most frequently replaced parts in the field.

• Specs: 3-Pole configuration | 24V 50/60Hz coil voltage | 60A FLA (Full Load Amps) | 75A RES (Resistive) | Factory OEM part number HN53TZ024 | Weight: 1.49 lbs
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory tolerances. Generic contactors often use substandard contact alloys that pit and weld prematurely under the high inrush current demands of commercial compressors — accelerating failure and risking downstream damage to the compressor itself.
• Install difficulty: 3/5 — Requires full lockout/tagout of all power before service. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire labels or smartphone for wiring documentation, and a multimeter to verify coil continuity and contact resistance after installation. Always confirm 24V control signal at coil terminals before replacing additional components.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier TCHC2550HECMRMH500 commercial packaged HVAC unit. Also fits related 50HECMR and 50HECMRA series models — verify your model's data plate and existing contactor pole count and coil voltage before ordering. Our fitment team is available to confirm compatibility before you buy.