Fronius Eco

Fronius International GmbH
Type: On-Grid
Power Range: 25~27 kW
Region: Austria Austria
Note: Your Enquiry will be sent directly to Fronius International GmbH.


1. SnapINverter Technology

2. Integrated data communication

3. Smart Grid Ready

4. Dynamic Peak Manager

5. Zero feed-in

Product Characteristics

Model No.
Fronius Eco 25.0-3-S Fronius Eco 27.0-3-S
Product Warranty (Min)
5 Years 5 Years
Input Data(DC)  
Max. DC Voltage
1000 V 1000 V
Nominal DC Voltage
580 V 580 V
Min. DC Voltage to Start Feed In
650 V 650 V
Max. DC Current
44.2 A 47.7 A
MPP(T) Voltage Range
580~850 V 580~850 V
No of MPP Trackers
1 1
DC Inputs
6 6
Output Data (AC)  
Max. AC Power
25 kW 27 kW
Nominal AC Power
25 kW 27 kW
Output AC Voltage Range
154~480 V 154~480 V
Nominal AC Voltage
230, 380, 400 V 230, 380, 400 V
Max. AC Current
36.1 A 39.1 A
Frequency Range
45-65 Hz 45-65 Hz
50, 60 Hz 50, 60 Hz
Distortion (THD)
< 2 % < 2 %
No of feed-in phases
3 3
Max. Efficiency
98.2 % 98.3 %
Euro Efficiency
97.5 % 97.6 %
AC Output Connection
Screw, Plug, Clamp Screw, Plug, Clamp
General Data  
Dimensions (H/W/D) 
725x510x225 mm 725x510x225 mm
35.7 kg 35.7 kg
Power Consumption at Night
< 1 W < 1 W
Operating Temperature -25 ~ +60 ℃
Transformer Transformerless
Protection Class IP66
Humidity 0-100 %
Cooling Fan
Max. Altitude 2000 m
Interface RS 485, Ethernet, USB, WLAN
Protection Features  
Protection Features Overload Protection, Overvoltage Protection
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Product Feature

The three-phase Fronius Eco in power categories 25.0 and 27.0 kW perfectly meets all the requirements of large-scale installations. Thanks to its light weight and SnapINverter mounting system, this transformerless device can be installed quickly and easily either indoors or outdoors. This inverter series sets new standards with its IP 66 protection class. In addition, its integrated all-pole string fuse holders and optional DC fuse mean that string collection boxes are no longer required.

About Fronius

Fronius International GmbH

Wartberger Straße 11, A-4643 Pettenbach
No. Staff: 2400
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A passion for new technologies, intensive research and revolutionary solutions have been shaping the Fronius brand since 1945. As technology leader, we find, develop and implement innovative methods to monitor and control energy for welding technology, solar energy and battery charging.

The advanced technology and sheer quality of the innovative products from Fronius have filled people with enthusiasm for generations, inspiring confidence, trust and satisfaction. Their sustainability is impressive, they boost productivity, increase energy yields and also reduce operating costs. They help our customers to make significant progress and lay the foundations for growth and successful development.

Fronius has 24 subsidiaries on four continents – yet we are still the same owner-managed company we have always been, combining the values of a family business with regional roots, with the visions of a global company.

Three divisions – best bankability

In the Perfect Welding Division, we direct our attention to generating the perfect arc to ensure consistently high welding quality. The focus for our Solar Energy and Perfect Charging Divisions is to have a reliable and comprehensive energy supply realized with renewable energy – 24 hours a day. We call this “24 hours of sun”

Solar pioneer since 1992

Our mission at Fronius Solar Energy is to drive the transformation to 100% renewables, to 24 hours of sun. We are therefore concentrating on developing solutions and solar technologies that make it possible to generate, store, distribute and consume renewable energy intelligently, efficiently and economically since 1992. With 25 years of experience in solar technologies we are solar pioneers from the very first hour.

Useful Contacts

Contact Face
Fronius International Sales Team
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Neubauer Christian Marketing

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