Fronius Symo 20.0-3-M Lite is a robust 20 kW three-phase inverter, part of the transformerless SnapINverter portfolio . It provides the essential high-performance features for commercial and larger residential systems, focusing on flexibility and reliability. Its key technologies, such as the SuperFlex Design with two MPP trackers, make it an optimal solution for complex roofs with different orientations or shading conditions .
Key Features
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High Power Output: 20 kW nominal AC output, three-phase configuration—ideal for commercial applications and larger residential self-consumption installations .
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Dual MPPT Trackers: Two independent Maximum Power Point Trackers provide design flexibility for complex roof layouts with different orientations or partial shading .
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SuperFlex Design: A wide DC input voltage range (200 – 1000 V) supports high-voltage PV strings and allows for significant oversizing of the PV array up to 30 kWp .
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SnapINverter Technology: Modular design separates the connection compartment from the power unit, enabling faster installation and easier servicing where only the power stage set needs removal .
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Communication Ready: The “Lite” version is prepared for adding a WLAN module later and includes other interfaces like Ethernet (LAN), USB, and RS485 for monitoring and integration .
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Robust Outdoor Build: With an IP66 protection rating, the inverter is built to last and is suitable for both indoor and outdoor installation .
Technical Data Table
| Parameter | Specification |
|---|---|
| AC Nominal Output | 20 kW |
| Max. PV Generator Power | 30 kWp |
| Number of MPP Trackers | 2 |
| MPP Voltage Range | 420 – 800 V |
| DC Input Voltage Range | 200 – 1000 V |
| Max. Input Current per MPPT | 33.0 A / 27.0 A |
| Max. Efficiency | 98.1% |
| European Efficiency | 97.9% |
| Grid Connection | 3~NPE 400/230 V or 380/220 V |
| Protection Rating (IP) | IP66 |
| Dimensions (H x W x D) | 725 x 510 x 225 mm |
| Weight | 43.4 kg |
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