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Fronius Symo 3.0-3-M — a compact three-phase inverter with a power rating of 3 kW, suitable for small private and commercial solar power plants. Thanks to two MPPT trackers and SuperFlex Design technology, this device operates efficiently even on complex roof shapes. The inverter features a built-in web server, full support for Modbus TCP/RTU, API, and Fronius Solar.web, and is also fully compatible with Victron Energy hybrid systems via AC coupling.
Key advantages of the Fronius Symo grid-tied inverter
- Maximum efficiency of 98%, European standard – 96.5%
- Two independent MPPT for complex panel configurations
- Built-in Wi-Fi, Ethernet, Modbus TCP/RTU, and JSON API
- Reliable protection: IP65, active fan cooling
- Full compatibility with Victron Energy systems
- Dynamic generation limitation (Zero Feed-in)
Technical Features
- Rated power: 3000 W
- Input voltage range: 150–1000 V
- MPPT operating range: 150–800 V
- Maximum MPPT current: 2 × 16 A
- DC connections: 2+2 inputs, screw terminals
- AC connection: 3~NPE 400/230 V or 380/220 V
- Standby power consumption < 1 W
- Weight: 19.9 kg
- Temperature range: from -25°C to +60°C
- Made in Austria
Application scenarios
- Private 3-phase rooftop PV systems
- Installations with multiple roof planes or partial shading
- Small businesses and office buildings with self-consumption
- Hybrid solar systems with Victron ESS (via AC coupling)
Service support in Ukraine
Total-Energo LLC is an official Fronius partner in Ukraine. We provide full project support: from inverter selection and installation to technical support, warranty, and post-warranty service.
Communication and monitoring interfaces
- WLAN / Ethernet LAN – Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON)
- RS485 Modbus RTU – for meters or compatible controllers
- USB-A – for firmware updates or log export
- 2× RS422 (RJ45) – Fronius Solar Net
- 6 inputs and 4 digital inputs/outputs – load control or external relays
- S0 interface – support for metering meters
- Potential-free relay – integration into energy management systems
- AC coupling with Victron Energy – allows synchronization of the grid-tied inverter with Victron MultiPlus or Quattro. This connection is implemented via a common AC connection point (AC bus).