OEM Carrier 3-Pole Contactor HN53CD209 for Model ROA0300L2Y

This is the genuine OEM replacement contactor for the Carrier ROA0300L2Y packaged or commercial HVAC unit. The contactor functions as a high-voltage relay, receiving a low-voltage (24V) signal from the control board and closing the circuit to deliver line voltage to the compressor and condenser fan motor. When the contactor fails, the system may refuse to start, run continuously without shutting off, chatter audibly, or show visible signs of pitting and burning on the contact surfaces.

• Specs: 3-Pole configuration | 24V AC coil | OEM Part Number HN53CD209 | Factory-matched contact ratings for Carrier ROA0300L2Y — verify amperage on your unit data plate before ordering
• OEM vs Generic: This is a genuine Carrier OEM contactor, not an aftermarket substitute. OEM contacts meet exact factory arc-resistance and pull-in voltage specifications. Generic contactors often use lower-grade contact alloys, leading to premature pitting and coil failure under repeated cycling.
• Install difficulty: 3/5 — Always shut off power at both the disconnect and the breaker panel before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and camera/phone to photograph wire positions before disconnecting. Discharge any capacitors in the vicinity before reaching into the unit.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model ROA0300L2Y. Always cross-reference the part number on your existing contactor label and confirm pole count, coil voltage, and amperage rating match your unit's data plate. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — ships same day.