The Enphase IQ9N 3-Phase Microinverter (SKU: IQ9N-3P-277-A-DOM-US) is powered by advanced GaN-based architecture and the trusted Enphase platform. It delivers high performance for 480 VAC WYE three-phase commercial PV systems without the need for external transformers. This is the Domestic Content (DOM) version, made in the USA.

Key Features

• Peak AC output power: 427 VA
• Supports 277 V (L-N) / 480 V (L-L) three-phase grids
• GaN-based architecture for high efficiency
• Supports high-wattage modules up to 600 W (340–600 W range)
• Domestic Content — Made in the USA (qualifies for ITC adder)
• No external transformer required for 480 VAC systems
• Built-in rapid shutdown (NEC 2014/2017/2020/2023 compliant)
• Phase balancing, voltage/frequency ride-through
• Loss-of-phase detection
• Remote diagnostics via Enphase Installer Portal and App
• Power line communication (PLC)
• Industry-leading 25-year limited warranty

Electrical Specifications

• Peak Output Power: 427 VA
• Max Continuous Output Power: 427 VA
• Nominal Grid Voltage: 277 V (L-N) / 480 V (L-L)
• Grid Voltage Range: 243–305 V (L-N)
• Max Continuous Output Current: 1.54 A
• Nominal Frequency: 60 Hz
• CEC Weighted Efficiency: 97.5%
• Operating Voltage: 16–60 V DC
• Peak Power Tracking Voltage: 28–45 V DC
• Max DC Continuous Current: 16 A
• Max DC Short-Circuit Current: 25 A
• Max Microinverters per 20A 480V WYE Branch Circuit: 30
• AC Connector: Enphase QD 4-pin connector
• DC Connector: MC4

Mechanical Specifications

• Dimensions (H×W×D): 206.48 mm × 186.03 mm × 31.25 mm
• Weight: 1.2 kg (2.65 lb)
• Ambient Temperature Range: -40°C to 65°C
• Enclosure: NEMA Type 6, outdoor rated, Class II double-insulated
• Cooling: Natural convection — no fans

Compliance

CA Rule 21 (UL 1741-SB), UL 62109-1, UL 1741/IEEE 1547, FCC Part 15 Class B, ICES-003 Class B, NEC 2014/2017/2020/2023 Rapid Shutdown

Compatibility

• PV Modules: 340–600 W
• IQ Gateway Commercial Pro (GW0-1CL-1N-D0-0R)
• IQ Gateway Commercial 2 (ENV2-IQC2-AM3-3P)
• Enphase QD Cables

Warranty

25-year limited warranty

Datasheet

Download IQ9N Commercial Microinverter Datasheet (PDF)