Fronius Three Phase Inverters

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The Fronius Symo and Fronius Eco inverters are ideal for three phase industrial and commercial applications.

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Fronius Symo Inverters

With power categories ranging from 3.0 to 20.0 kW, the transformerless Fronius Symo is the three-phase inverter for every system size.

Owing to the SuperFlex Design, the Fronius Symo is the perfect answer to irregularly shaped or different roof orientations.

A WLAN or Ethernet internet connection as standard plus easy integration of third-party components make the Fronius Symo one of the most communicative inverters on the market. 

  • Two MPPT
  • Display
  • Warranty: 2 years, 5 years after registration; can be extended to 20 years
Fronius Symo 3.0 3.7 4.5
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Product Code Description Retail Price
(ex VAT)
FR-4.210.036 Fronius Symo 3.0kW 3-phase inverter with communication £1,099.36
FR-4.210.038 Fronius Symo 3.7kW 3-phase inverter with communication £1,206.38
FR-4.210.033 Fronius Symo 4.5kW 3-phase inverter with communication £1,273.12
FR-4.210.034 Fronius Symo 5.0kW 3-phase inverter with communication £1,294.01
FR-4.210.040 Fronius Symo 6.0kW 3-phase inverter with communication £1,321.17
FR-4.210.041 Fronius Symo 7.0kW 3-phase inverter with communication £1,640.03
FR-4.210.039 Fronius Symo 8.2kW 3-phase inverter with communication £1,814.59
FR-4.210.050 Fronius Symo 10.0kW 3-phase inverter with communication £1,825.00
FR-4.210.051 Fronius Symo 12.5kW 3-phase inverter with communication £2,070.60
FR-4.210.052 Fronius Symo 15.0kW 3-phase inverter with communication £2,085.01
FR-4.210.053 Fronius Symo 17.5kW 3-phase inverter with communication £2,225.46
FR-4.210.054 Fronius Symo 20.0kW 3-phase inverter with communication £2,325.05

Fronius Symo Light Inverters

With power categories ranging from 3.0 to 20.0 kW, the transformerless Fronius Symo is the three-phase inverter for every system size.

Owing to the SuperFlex Design, the Fronius Symo is the perfect answer to irregularly shaped or different roof orientations.

  • Two MPPT
  • Display
  • Warranty: 2 years, 5 years after registration; can be extended to 20 years
Fronius Symo 3.0 3.7 4.5
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Product Code Description Retail Price
(ex VAT)
FR-4.210.036.001 Fronius Symo Light 3.0kW 3-phase inverter £1,003.88
FR-4.210.038.001 Fronius Symo Light 3.7kW 3-phase inverter £1,111.00
FR-4.210.033.001 Fronius Symo Light 4.5kW 3-phase inverter £1,177.64
FR-4.210.034.001 Fronius Symo Light 5.0kW 3-phase inverter £1,198.63
FR-4.210.040.001 Fronius Symo Light 6.0kW 3-phase inverter £1,225.77
FR-4.210.041.001 Fronius Symo Light 7.0kW 3-phase inverter £1,544.65
FR-4.210.039.001 Fronius Symo Light 8.2kW 3-phase inverter £1,719.21
FR-4.210.050.001 Fronius Symo Light 10.0kW 3-phase inverter £1,729.25
FR-4.210.051.001 Fronius Symo Light 12.5kW 3-phase inverter £1,975.12
FR-4.210.052.001 Fronius Symo Light 15.0kW 3-phase inverter £1,997.55
FR-4.210.053.001 Fronius Symo Light 17.5kW 3-phase inverter £2,138.00
FR-4.210.054.001 Fronius Symo Light 20.0kW 3-phase inverter £2,237.50

Fronius Eco Inverters

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 combiner boxes are no longer required.

  • One MPPT
  • Display
  • Warranty: 2 years, 5 years after registration; can be extended to 20 years
  • Simple data monitoring is included using an integrated WLAN interface. The inverter connects wirelessly and allows the user to monitor how the solar PV system is performing via the Fronius SolarWeb using an internet-ready device.
Fronius Eco 25.0 27.0
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Product Code Description Retail Price
(ex VAT)
FR-4.210.056.040 Fronius Eco 25.0kW 3-phase inverter with communications £2,297.18
FR-4.210.057.040 Fronius Eco 27.0kW 3-phase inverter with communications £2,359.72

Fronius Eco Light Inverters

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 combiner boxes are no longer required.

  • One MPPT
  • Display
  • Warranty: 2 years, 5 years after registration; can be extended to 20 years
Fronius Eco 25.0 27.0
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Product Code Description Retail Price
(ex VAT)
FR-4.210.056.041 Fronius Eco Light 25.0kW 3-phase inverter £2,211.05
FR-4.210.057.041 Fronius Eco Light 27.0kW 3-phase inverter £2,274.30