OEM Carrier 3-Pole Contactor 208V 40A — HN53CD209 for Model ROA1000M5H

This is the genuine OEM replacement contactor for the Carrier ROA1000M5H rooftop or commercial HVAC unit. The contactor is a high-voltage relay that receives a low-voltage signal from the control board and closes the circuit to deliver line-voltage power to the compressor and fan motor loads. When the contactor fails — due to pitted or welded contacts, a burned coil, or worn contact surfaces — the system will either refuse to start, hum continuously without engaging, or fail to shut off. Replacing it with the factory-matched OEM part ensures precise coil pull-in voltage and correct ampacity for the ROA1000M5H's electrical load.

• Specs: 3-Pole | 208V coil | 40A FLA | OEM Part Number HN53CD209 | Factory-spec contact rating for Carrier ROA1000M5H
• OEM vs Generic: This OEM contactor is wound and rated to exact Carrier factory specifications. Aftermarket contactors often use lower-grade contact material that pits faster under high inrush current, shortening service life significantly.
• Install Difficulty: 3/5 — Commercial voltage present; always disconnect and lock out power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, camera or phone to photograph existing wiring before disconnecting terminals.
• Warranty: Backed by a 1-year OEM factory warranty. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Direct OEM replacement for Carrier model ROA1000M5H. Always verify the coil voltage (208V) and pole count (3-pole) against your unit's wiring diagram and data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.