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Fronius IG 15 / 20 / 30

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The reliable PV inverter series.

The Fronius IG series has proven itself to be powerful, user-friendly and highly reliable. Equipped for every size of PV system, especially for smaller systems (e.g. on the roof of one-family houses). The combination of different types available for selection is limitless. The ingenious processor control combined with the powerful HF transformer extracts the maximum energy yield from all types of modules.

Technical Data

Fronius IG 
Input Data   
MPP voltage range  150 - 400 V  150 - 400 V  150 - 400 V 
Max. input voltage (at 1000 W/m²; - 10° C) 500 V 500 V 500 V
PV system output  1,300 - 2,000 Wp  1,800 - 2,700 Wp  2,500 - 3,600 Wp   
Max. input current    10,8 A 14,3 A   19 A   
Output Data  
Nominal output   1,300 W   1,800 W  2,500 W   
Max. power output   1,500 W  2,000 W  2,650 W 
Max. efficiency  94,2 %  94,3 %  94,3 %   
Euro efficiency  91,4 %  92,3 %  92,7 %  
Mains voltage / frequency 230 V / 50 Hz (60 Hz)   
Distortion factor  < 3,5 %  
Power factor   1
Power consumption at night  < 1 W 
General Data   
Size l x w x h  366 x 344 x 220 mm (500 x 435 x 225 mm)  
Weight  9 kg (12 kg)       
Cooling  controlled forced-air cooling     
Protection class (housing)  IP 21 (IP 45)
Ambient temperature range  - 20 ... 50° C  
Permissible humidity  0 ... 95 % 
Protective Devices 
DC insulation measurement  warning when Riso< 500 k Ohm    
Polarity reversal protection       built-in  
Behaviour on DC overload  displacement of operating   

The right to make technical modifications is reserved.

Equipment features

  • Fronius LC-Display
  • HF-Transformer
  • Module-Manager



HF transformer switchover

Fronius transformer inverters use a high-frequency (HF) transformer. The automatic transformer switchover facility produces three efficiency peaks. The result: a constant level of efficiency across the entire input voltage range, resulting in higher yields. Other advantages of HF transformer technology are the compact, lightweight design, a high level of efficiency and safety as a result of the electrical isolation.

Fronius Module Manager

The Fronius Module Manager always locates the maximum power point (MPP), even in the case of the more demanding thin-layer modules. The Fronius Module Manager achieves an outstanding MPP adaptation efficiency of >99.9 % in total.

PC board replacement

The foundation of the unique PC board replacement is laid as we develop our inverters, as PC boards can only be replaced if the device has been designed accordingly. This enables our Fronius Service Partners to provide the fastest inverter servicing on the market.

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