Fronius Eco 27kW 3-Phase Light Grid-Tie Inverter

The Fronius Eco 27.0-3-S Light is a compact, workhorse inverter for large rooftop and ground-mount arrays. It delivers up to 27 kW AC with a single high-voltage MPP tracker and six DC inputs, designed for fast installation and long outdoor service. The Light model keeps the core hardware, it simply drops the onboard LAN, Wi-Fi, and webserver datalogger so you can pair your own plant monitoring.

Why installers pick it

• High efficiency up to 98.3 percent, strong part-load performance.

• IP66 enclosure, engineered for indoor or outdoor mounting, regulated air cooling. 

• Quick fit SnapINverter mounting system.

• Fewer boxes on the roof, integrated double string fuse holders, DIN rail for optional Type 2 surge protection.

• Keeps USB for updates and RS422 Fronius Solar Net, plus signalling relay and external input, suited to BMS or plant controller integration.

• Omits the integrated WLAN/Ethernet and built-in datalogger/webserver that are standard on the non-light model, per Fronius footnote convention that only items marked are also available on Light.

• AC nominal output: 27,000 W, three phase, 50 or 60 Hz, THD < 2 percent.

• MPP voltage range: 580 to 850 V, max DC 1000 V, 1 MPP tracker, 6 DC inputs. 

• Dimensions and weight: 725 × 510 × 225 mm, 35.7 kg.Operating range: -25 to +60 °C, night consumption < 1 W. 

Good for
Warehouses, retail centres, schools, farms, and other medium to large grid-connected systems where a reliable, simple, high-efficiency inverter is preferred and site monitoring is handled externally.