Fronius Eco 25 kW 3-Phase On-Grid Inverter — Eco 25.0-3-S

Fronius Eco 25 kW 3-Phase On-Grid Inverter — Eco 25.0-3-S

Available

Model: Eco 25.0-3-S

The Fronius Eco 25.0-3-S is a compact project inverter for grid-tied three-phase systems rated at 25 kW. It suits commercial, industrial and farm installations, with a light build and SnapINverter mounting for quick indoor or outdoor installation, and integrated fuse holders that remove the need for string combiner boxes.

Key features

  • 98.2% max efficiency, 98.0% European efficiency
  • IP66 protection for indoor and outdoor installation
  • Integrated string fuse holders and DC disconnector
  • Built-in WLAN/Ethernet monitoring with Fronius Solar.web
  • Modbus TCP/RTU SunSpec, Dynamic Peak Manager and zero feed-in
  • SnapINverter mounting system, only 35.7 kg
  • Made in Austria

Product images are for illustration; the exterior may vary by batch. For exact specifications and a quote, contact our sales team.

Technical specifications

Max. efficiency98.2%
European weighted efficiency98.0%
Max. DC input voltage1,000 V
Startup voltage650 V
MPPT operating voltage range580 – 850 V (usable MPP range)
Number of MPP trackers1
No. of string inputs6 DC connections
Max. input current per MPPT44.2 A
Max. short-circuit current per MPPT80 A
Rated AC power25,000 W
Max. AC apparent power25,000 VA
Rated output voltage3~NPE 380/220V or 400/230V (+20% / -30%)
Rated AC grid frequency50/60 Hz (45 – 65 Hz)
Max. output current37.9 A / 36.2 A (nominal)
Power factor range0 – 1 ind. / cap.
Protection degreeIP66
Operating temperature range-25 °C to +60 °C
Max. operating altitude2,000 m unrestricted / 2,500 m restricted
Dimensions (W x H x D)510 × 725 × 225 mm
Weight35.7 kg
CoolingRegulated air cooling
CommunicationWLAN / Ethernet LAN, Fronius Solar.web, Modbus TCP SunSpec, RS485 (Modbus RTU SunSpec), USB, Datalogger & Webserver included

Frequently Asked Questions

How many MPPTs does the Fronius Eco 25.0-3-S have?

It has a single MPPT with 6 DC connections and a usable MPP voltage range of 580–850 V.

Does it need a separate string combiner box?

Usually not — it has integrated string fuse holders and a DC disconnector, with optional surge protection.

How is the inverter monitored?

A built-in datalogger and webserver connect via WLAN or Ethernet to Fronius Solar.web, with Modbus TCP and RTU support.

Is installation and warranty available?

Yes — supply and installation are available across Saudi Arabia. Warranty and delivery details vary by model; contact us for a detailed quote.

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