Fronius Primo 3.8-1 208-240

Fronius Primo 3.8-1 208-240
Fronius Primo 3.8-1 208-240


The Fronius Primo line features mid-range residential grid-tie inverters incorporating dual MPPT DC connections.  Together with a wide input voltage range, the flexibility of the Primo line is a great choice when plans call for starting small with the intent to grow the array over time.

Two DC MPPT inputs, each with two connection points, provides even more versatility in array layout and configuration.   An operating voltage range that starts at 80 VDC means an owner can start with a minimal, smaller array; 3 or 4 panels wired at ~90 or 120 VDC for example, with room to grow into the full capacity of the inverter and expand over time.

Other standard features include a Wi-Fi and SunSpec Modbus interface for monitoring and datalogging, internal AFCI (arc fault) and GFDI(ground fault) protection in accordance with current UL and NEC requirements, and DC disconnect.  The Primo inverters also incorporate the Fronius SnapINverter hinge mounting system, making for a quick and simple inverter installation.  NEMA 4X rating makes the units suitable for indoor or outdoor installation.  

Primo 3.8-1 Specs 

Operating Voltage Range: 80 VDC to 600 VDC
MPP Voltage Range(peak efficiency): 200 - 480 VDC
Recommended PV Power: 3,000 - 6,000 watts
Max. Usable Input Current(per MPTT input): 18.0 A
Grid Connection: 208 or 240 VAC
Max. Output Power: 3,800 watts(208/240 VAC)
Max. Output Current: 18.3 A(208 VAC), 15.8 A(240 VAC)
Ambient Operating Temperature: -40 to 131 degrees F
Fan Cooled

Dimensions: 16.9" W x 24.7" H x 8.1" D; weighs 48 lbs
UL 1741-2010, 1998 as well as other certifications and compliance
10 Year Warranty


Available Download Links

Additional Information

Additional Information

model 4,210,064,800