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Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240

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Input Voltage DC600
Output Voltage AC240
Solar panel compatibility60/72 - 120/144 cell
TypeGrid-Tie Inverters
Rated Efficiency96.7 %
Dimensions LxWxH31" x 22" x 12"
Weight47.29 lbs
ManufacturerFronius USA LLC
Manufacturer Part #FRO-P-3.8-1-208-240
Operating Temperatures -40 ... +55 °C
Warranty10 Years Manufacturer
Delivery Time 5-7 Business Days

About product

Fronius Primo 3.8-1 208-240, 3.8kW single phase, string inverter

  • Manufacturers Part Number:
  • Shipping Weight: 48 lb
  • Shipping Dimensions: 31 x 22 x 12 in
  • Pallet Qty: 10

With power categories ranging from 3.8 kW to 15.0 kW, the transformerless Fronius Primo is the ideal compact single-phase inverter for residential applications. The sleek design is equipped with the SnapINverter hinge mounting system which allows for lightweight, secure and convenient installation and service. The Fronius Primo has several integrated features that set it apart from competitors including dual powerpoint trackers, high system voltage, a wide input voltage range, Wi-Fi and SunSpec Modbus interface for seamless monitoring and datalogging, Arc Fault Circuit Interruption (AFCI), and Fronius’ online and mobile platform Fronius Solar.web. The Fronius Primo is designed to adjust to future standards, offering a complete solution to code restrictions and technical innovations of tomorrow. It also works seamlessly with the Fronius Rapid Shutdown Box for a reliable NEC 2014 solution.

Reviews & Questions

  • Reviews (2)
  • Questions (2)
FANTASTIC customer service! I originally called another solar installation company, and after having them NEVER return my phone calls, I decided to give A1 solar a call. I’m SO glad I did! Everyone is extremely knowledgeable and helpful.
11/21/2020 08:47 pm
Not knowing much about inverter myself, they explained everything I had questions about. I feel confident that they set me up with a good system.
07/09/2020 06:28 am

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I’m looking for an inverter that can cope with a high altitude, what about this one?
Sam Andrews
09/01/2021, 11:14
This Fronius Primo Inverter can operate normally at heights of up to 13,120 ft.
Is it too weak to handle 5 kw of panels?
R. Wilkinson
08/18/2021, 15:23
Recommended PV power for this model is 3 to 6 kWp, so it should be alright.