OEM Carrier 3-Pole Contactor HN53CD209 for Model ROA0750M5H

This is the factory OEM replacement contactor for the Carrier ROA0750M5H commercial rooftop or packaged unit. The contactor is the high-voltage switching relay that receives a low-voltage signal from the control board and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a welded coil, or coil burnout — the system will either fail to start entirely, run continuously without shutting off, or trip on a fault code. Replacing it with the correct OEM part ensures full electrical compatibility and reliable operation.

• Specs: 3-pole configuration | 208-240V coil | 40A Full Load Amps (FLA) | 50A Resistive rating | Factory-specified for Carrier ROA0750M5H
• OEM vs Generic: OEM contactors are manufactured to exact Carrier coil pull-in voltage tolerances and contact gap specifications. Aftermarket contactors often use lighter contact materials, leading to premature pitting and arcing under high-amperage load cycles.
• Install difficulty: 3/5 — Requires complete power lockout/tagout before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter (to verify coil resistance and confirm dead contacts). Photograph all wiring connections before removal. Professional installation is strongly recommended for commercial equipment.
• Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered for the Carrier ROA0750M5H. Verify your unit's data plate coil voltage and pole count before ordering. Not sure? Contact our fitment team — we confirm compatibility before you buy. In stock and ready to ship today.