OEM Carrier 3-Pole Contactor 208V Coil — HN53CD209 for Model ROA0500L5D

This OEM contactor (part number HN53CD209) is the factory-specified high-voltage switching relay for the Carrier ROA0500L5D packaged or commercial condensing unit. The contactor acts as the master electrical gate for the system: when the thermostat or control board sends a low-voltage signal, the contactor coil energizes and closes the high-voltage circuit, delivering power to the compressor and condenser fan motor. A failed contactor means the outdoor unit receives no voltage — the system simply won't run, or it may short-cycle immediately after a call for cooling.

• Specs: 3-pole configuration | 208V coil voltage | Factory-matched contact rating | OEM part number HN53CD209 | Designed for Carrier ROA0500L5D
• OEM vs Generic: This genuine Carrier OEM contactor ensures exact coil pull-in voltage at 208V — critical for commercial applications where generic 24V coil substitutes will not function on a 208V control circuit, causing repeated no-start faults.
• Install difficulty: 3/5 — Commercial voltage is present at this unit. Always disconnect and lock out all power sources before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter (to verify coil continuity and contact resistance). Photograph all wiring before disconnecting. Licensed HVAC technician installation strongly recommended.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier ROA0500L5D. Verify your unit's control circuit voltage is 208V before ordering — this contactor will not operate correctly on a 24V control circuit. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — in stock and ready to ship today.