Fronius Verto 25.0 400

The Fronius Verto 25.0 400 is a three-phase grid-tied PV inverter for commercial rooftop systems and smaller ground-mounted projects with increased design flexibility. With 25kVA AC rated power, three independently operating MPP trackers, and a maximum DC generator capacity of up to 37.5kWp, the device is suitable for complex string configurations with different module arrays. The permissible DC voltage range of up to 1,000V as well as high input current reserves per string allow the use of modern high-performance and high-current modules. IP66 protection rating, integrated AC and DC surge protection, and active cooling support reliable continuous operation in outdoor environments. Thanks to open communication interfaces, the inverter can be seamlessly integrated into energy management, monitoring, and load management systems.

• TechnologyThe Verto 25.0 400 is based on a transformerless three-phase topology with separate power paths per MPP tracker. Three MPP trackers enable electrical decoupling of differently oriented or partially shaded generator sections. The MPP voltage range from 150V to 870V covers long string lengths as well as short sub-generators. With a maximum efficiency of 98.6% and a European efficiency above 98%, the device operates efficiently even at partial load, which is particularly relevant for east-west installations or load profiles with fluctuating feed-in power. Integrated arc fault detection increases operational safety in commercial systems.
  
  Electrical Design
  • 25kVA three-phase grid feed-in at 400V for commercial and facility connections
  • Three MPP trackers for separate string groups and complex roof geometries
  • DC voltage range up to 1,000V supports modern high-performance modules
  • High efficiency even in partial-load operation reduces system losses
• ConnectivityFor monitoring and system integration, the inverter features integrated data logger and web server functions. LAN and WLAN interfaces enable both local and network-based connectivity without additional hardware. Open protocols such as Modbus TCP and Modbus RTU allow integration into higher-level energy and control systems. In addition, the Solar API is available for detailed access to operating and performance data, simplifying integration into custom EMS solutions. Digital inputs and outputs support external enable signals, load management, or control commands from building and plant control systems.
  
  Interfaces & Protocols
  • LAN and WLAN for direct and network connectivity without additional devices
  • Modbus TCP/RTU for integration into third-party energy management systems
  • Solar API for detailed operating and performance data
  • Digital I/O for external control and load management signals
• WarrantyThe Fronius Verto 25.0 400 comes with a standard product warranty of two years. By free registration in the monitoring portal, this can be extended in accordance with the manufacturer’s conditions. The warranty covers material and manufacturing defects and is designed for commercial use, supporting planning and operational reliability throughout the project lifecycle.
• SustainabilityThe inverter is manufactured in Europe and is designed for high energy efficiency in continuous operation. The high efficiency reduces conversion losses and thus indirectly lowers thermal stress. Long service life, modular serviceability, and software-based expandability help reduce replacement and disposal effort. European server locations for monitoring data support data protection-compliant system architectures.
• QualityThe enclosure with IP66 protection rating allows installation in sheltered outdoor areas without additional housing. Active cooling ensures stable power operation even at high ambient temperatures. Integrated DC surge protection type1+2 as well as AC surge protection type2 reduce the risk from transient overvoltages. Design in accordance with relevant IEC standards supports use in demanding commercial grid infrastructures.
  
  Mechanics & Protection
  • IP66 enclosure for robust outdoor installation
  • Integrated AC and DC surge protection for increased operational safety
  • Active cooling for stable performance under high continuous load
  • Industrial-grade design in accordance with relevant standards
• ExpandabilityThe Verto 25.0 400 is designed as a pure grid-feed inverter and is not battery-integrated. However, external loads, charging infrastructure, or thermal applications can be integrated into the energy management system via open interfaces. The high DC input power provides reserves for future expansion of the PV generator within the electrical design limits. Software updates enable functional adjustments over the entire lifecycle.