The IQ9N-3P-277-A-DOM-US from Enphase Energy is a Smart Grid-Ready IQ9 Commercial Microinverter that supports 480 VAC three-phase commercial PV systems. It has a peak output power of 427 VA and a nominal grid voltage of 277 V. This DC-AC inverter has a nominal frequency of 60 Hz, a short circuit DC input current of up to 25 A, and a weighted efficiency of 97.5%. It requires an operational voltage of 16-60 V and has a peak power tracking voltage of 28-45 V. This lightweight microinverter consists of easy plug-and-play connectors and power line communication (PLC) for quick setup. It boosts energy harvesting and integrates with the IQ Gateway Commercial Pro, Enphase App, and analysis software for easy operation and maintenance. This system has a natural convection cooling system without fans and weighs 1.2 kg. It is available in a double-insulated, corrosion-resistant, polymeric enclosure that measures 206.48 × 186.03 × 31.25 mm.