Fronius Tauro ECO 50-3-D 100kW Three-Phase String Inverter – 4210306

The Fronius Tauro ECO 50-3-D is a high-performance 50 kW three-phase string inverter engineered for commercial and industrial solar projects. With its transformerless design, integrated protection devices, and advanced cooling technology, it delivers outstanding reliability and efficiency in demanding conditions. This inverter features one MPPT and supports a wide DC input voltage range (580–1000 V), enabling flexible system design. It achieves up to 98.5% maximum efficiency, ensuring optimal energy harvest across varying load conditions. Integrated WLAN, Ethernet, RS485, and Modbus interfaces simplify communication, monitoring, and system management. Built with an IP65 enclosure, the Tauro ECO 50-3-D is suited for both indoor and outdoor installations. Its active cooling with double-wall system ensures consistent performance in extreme temperatures, while scalable connection options provide maximum installation flexibility.
Key Features

50 kW three-phase string inverter for commercial and industrial PV systems

Max. efficiency 98.5% with 99.9% MPPT adaptation

Robust IP65 protection for indoor and outdoor installation

Active cooling technology for reliable performance in hot climates
Integrated type 1 + 2 surge protection and built-in DC disconnector

Comprehensive communication options: WLAN, Ethernet, Modbus TCP/RTU, RS485

Complies with international standards (VDE-AR-N, IEC, EN, CEI, AS/NZS)

Specifications

Brand: Fronius

Model: Tauro ECO 50-3-D

Manufacturer Article Number: 4210306

Rated AC Output Power: 50 kW

Max. PV Generator Power: 75 kWpeak

Max. Efficiency: 98.5%

European Efficiency: Up to 98.2%

Number of MPPTs: 1

DC Input Voltage Range: 580 – 1000 V

MPP Voltage Range: 580 – 930 V

Max. Input Current (per PV input): 75 A

Max. Short-Circuit Current (per PV input): 125 A

AC Nominal Output Power: 50 kVA

AC Voltage Range: 180 – 270 V

Frequency Range: 45 – 65 Hz

Cooling: Active cooling with double-wall system

Protection Class: IP65

Dimensions (W x H x D): 1109 × 755 × 346 mm

Weight: 74 kg (92 kg incl. packaging)

Installation: Indoor / Outdoor

Ambient Temperature Range: -40°C to +65°C

Communication: WLAN, Ethernet LAN RJ45, Modbus TCP, RS485 (RTU), Solar.web, Solar API

Compliance & Standards: VDE-AR-N 4105/4110, IEC 62109, IEC 62116, CEI 0-21, EN 50549, AS/NZS 4777, CE

Built for large-scale solar installations, this three-phase string inverter delivers 100kW output with reliable performance, high efficiency, and durable design for industrial and commercial energy systems.