Fronius Primo, 3.8–15kW single-phase inverter, dual MPPT, AFCI, wireless

The Fronius Primo is a transformerless, compact single-phase string inverter designed for residential and small-scale commercial solar applications. With power categories ranging from 3.8 to 15 kW, it supports both 600 V (ESA residential) and 1,000 V (commercial) maximum input voltages. Industry-leading features come standard, including dual MPPT, arc fault circuit interruption (AFCI), integrated wireless monitoring, and SunSpec Modbus compatibility via Fronius Solar.web.

.Key Features:.
• Dual MPPT for optimized energy harvest
• AFCI and ground fault protection with isolation monitor interrupter
• SnapINverter mounting system
• Wireless (802.11 b/g/n), Ethernet, SunSpec Modbus TCP/RTU, JSON
• Smart Grid Ready
• Indoor and outdoor installation (NEMA 4X)
• Optional Revenue Grade Metering (ANSI C12.1)

.Key Specifications:.
• Power range: 3.8 to 15 kW
• Max efficiency: 97.9%
• Grid connection: 208 / 240 V, 60 Hz
• Operating voltage range: 80–1,000 V
• Night-time consumption: < 1 W
• Cooling: Controlled forced ventilation, variable speed fan

.Certifications:.
• UL 1741-2010 (incl. Supplement SA 2016-09)
• UL 1998, UL 1699B Issue 2-2013
• IEEE 1547-2003, IEEE 1547.1-2003
• ANSI/IEEE C62.41
• FCC Part 15 A & B
• NEC 2017 Article 690
• C22.2 No. 107.1-16
• CSA TIL M-07 Issue 1-2013