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Fronius Eco 25.0-3-S Solar Inverter

SKU ECO 25.0-3-S Categories , Tag

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Fronius Eco

The compact project inverter for maximum yields.

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.

Technical Data


Number of MPP trackers 1
Max. input current (Idc max)
44,2 A
Max. short circuit current, module array*
80 A
DC input voltage range (Udc min – Udc max)
580 – 1000 V
Feed-in start voltage (Udc start)
650 V
Nominal input voltage (Udc,r)
580 V
MPP voltage range (Umpp min – Umpp max)
580 – 850 V
Usable MPP voltage range 580 – 850 V
Number of DC connections 6
Max. PV generator power (Pdc max)
37,8 kWpeak


AC nominal output (Pac,r)
25 kW
Max. output power (Pac max)
25 kVA
AC output current (Iac nom)
37,9 / 36,2 A
Grid connection (Uac,r)
3~ NPE 400/230, 3~ NPE 380/220 V
AC voltage range (Umin – Umax)
150 – 275 V
Frequency (fr)
50 / 60 Hz
Frequency range (fmin – fmax)
45 – 65 Hz
Total harmonic distortion <3% @Pnom (230/400VAC 50Hz)
Power factor (cos φac,r)
0 – 1 ind,/cap,


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