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Fronius IG Plus 3kW Inverter

Fronius logo
  • Inverters and data communication solutions for grid-connected PV systems

Product Information

Model Part No. Watts Input
Type Size & Weight Price
Fronius IG Plus 3kW Inverter29300053000W600VDC208/240/277VAC24.8 × 17.1 × 9.6 in
55 lbs


Greater energy harvest with three efficiency peaks

With an automatic transforming switching process the Fronius IG Plus 3.0-1 uses 3 efficient peaks of energy. This allows for a large input voltage range with stable high efficiency.

MIX™ Concept

With a combination of multiple power stages in each inverter, you are able to get the most out of you energy collection. This is possible due to the inverter's ability to divide up the work in relationship to operating hours allowing for multiple efficient energy collecting processes.

Module Manager™

By allowing the inverters to match the solar panels with maximum power point (MPP), all the energy collected is converted at a high efficiency. 

Smart Ventilation Design

High protection against disruptive environmental conditions with a smart no contact air ventilation design. Cool air is routed through the inverter within its own air channel. This makes sure no damaging environmental conditions contaminate the internal workings of the inverter.

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Features & Attributes

  • Dimensions (LxWxH): 24.8 × 17.1 × 9.6 inches
  • Weight: 55 lbs
  • On site grounding selection. The Fronius IG Plus 3.0-1 is programmed to ground positive or negative module grounding on site.
  • Well suited for outdoor or indoor installations. This inverter is designed with a durable aluminum housing. Corrosion and UV resistance enables dual use either outdoors or indoors.
  • DC disconnect integrated. No need for a DC disconnects or parts such as cables. The Fronius IG Plus 3.0-1 comes with a plug-and-play DC Disconnect.
  • Safety with the new power plug. The power stages are installed completely separately from one and another. The connection area still attaches to the wall as normal. The power module is plugged in, connecting both parts into one safe unit.
  • AC output voltage is field programmable. The Fronius IG Plus 3.0-1 is programmable to 208,240 or 277 volts. No more need to install multiple inverter models for three-phase installations.
  • MPN: IG PLUS 3.0-1 UNI
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Fronius IG Plus 3kW Inverter

Product Manual
Spec. Sheet
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About Fronius

Key Points

  • Extensive product line, accommodating a wide range of applications.
  • A trusted name in the renewable energy field.
  • High frequency/phase shift architecture maximizes efficiency while reducing weight.

Headquartered in Pettenbach, Austria, Fronius has been a key manufacturer of photovoltaic electronics since 1992, particularly in the engineering and manufacturing of photovoltaic inverters for both grid-connected and independent power supplies. Fronius was founded in 1945, and began manufacturing battery-charging systems shortly thereafter. They made a name for themselves with premium welding technology, especially in the automotive industry. Eventually, technology and engineering standards used in welding applications transferred over to the solar electronics market.

Production facilities have always remained close to home, nestled at the foot of the Alps, in Sattledt, and Weis in northwestern Austria, along with production sites in the Czech Republic and Ukraine. A state-of-the-art facility opened early 2011 in Pettenbach, reaffirming the company's commitment to the European union. Fronius has remained a trusted name in the renewable energy market, offering an extensive line of photovoltaic electronics, built to high quality control standards.

Fronius' IG series of inverters offer residential & commercial grid-tie customers a wide range of products, which reflect the company's proven designs. Their wide input voltage range allows for flexible use of modules in any power and voltage range. These inverters come standard with 3 expansion slots, which allow you to add features like external sensors and remote displays. High-frequency (HF) architecture, and phase shift technology deliver higher reliability and efficiency while reducing size, weight, and installation costs. All Fronius IG series inverters are CSA listed to UL 1741 for the U.S and Canada, and are backed up by standard 10-year warranty with the option for a 5-year extension.

The Fronius IG plus line offers customers more features for larger systems. These inverters provide a lockable, code-compliant DC disconnect with a six circuit, fused string combiner in a separable compartment that stays on the wall if the inverter needs to be serviced. A bus bar is available for bypassing the combiner on higher input currents, and the string combiner can be fused for up to 20 amps per circuit. Fronius IG inverters make a seemingly complex system appear simple and straightforward, maximizing ease-of-use and technological advancement.

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