Inverter – FRONIUS – Tauro 50-3-P
Product details
Tauro
Tauro by Fronius is an inverter designed for large photovoltaic installations. Its 50 kW output and 3 maximum power point (MPP) trackers combine with flexible installation and system design. The double-walled housing and active cooling enable operation in direct sunlight and high temperatures, while the modular design simplifies servicing.
Key benefits of Tauro
- Power 50 kW and 3 MPP trackers — a solution for large photovoltaic systems.
- Double-walled housing and active cooling — a design engineered to withstand direct sunlight and high temperatures.
- Flexible installation — central or peripheral mounting and vertical or horizontal positioning possible.
- Monitoring via Fronius Solar.web — system monitoring from a smartphone or computer and the ability to integrate third-party components thanks to an open system.
- Replacement of a single power module — servicing at the installation site without having to replace the entire inverter, saving time and money.
- Integrated surge protection and daisy-chaining on the AC side — reduced need for additional components and wiring.
Who is this a good choice for?
Tauro is a solution for owners and users of large photovoltaic installations who want to monitor system performance and reduce service costs by replacing individual modules. It is also suitable for customers planning to install the inverter in a location exposed to direct sunlight and high temperatures — its housing and cooling system were designed with these factors in mind.
| Parameter | Fronius Tauro 50-3-D | Fronius Tauro ECO 50-3-D | Fronius Tauro ECO 99-3-D | Fronius Tauro ECO 100-3-D |
|---|---|---|---|---|
| DC input data | ||||
| Number of MPP trackers | 3 | 1 | ||
| Maximum input current (A) | 134 | 87,5 | 175 | |
| Maximum string input current, 20 A option (A) | 14,5 | |||
| Maximum string input current, 30 A option (A) | 22 | |||
| Maximum string short-circuit current, 20 A option (A) | 20 | |||
| Maximum string short-circuit current, 30 A option (A) | 30 | |||
| AC output data | ||||
| Rated power (kW) | 50 | 99,99 | 100 | |
| Protection | ||||
| DC disconnector | Integrated | |||
| Behavior under overload | Operating point shift, power limiter | |||
| Residual current monitoring (RCMU) | Integrated | |||
| DC insulation measurement | Integrated | |||
| AFCI arc fault detection (Fronius Arc Guard) | — | Integrated (only for the 20 A option) | ||
| DC/AC surge protection | Type 1 + 2 integrated⁶, type 2 optional | |||
| String protection with fuses | Integrated, 20 A or 30 A | |||
| Interfaces | ||||
| Wi-Fi | Fronius Solar.web, Modbus TCP Sunspec, Fronius Solar API (JSON) | |||
| Ethernet LAN RJ45 | 10/100 Mbit; max. 100 m | |||
| USB (Type A socket) | 1 A @ 5 V max.⁷ | |||
| Wired shutdown (WSD) | Emergency stop switch | |||
| 2 × RS485 | Modbus RTU SunSpec | |||
| 6 digital inputs | Programmable remote control receiver interface, energy management, load control | |||
| 6 digital inputs/outputs | ||||
| Data logger and web server | Integrated | |||
⁶ Type 1 + 2: Iimp kA; ⁷ For electrical power supply only; ⁸ An Ethernet connection in a star topology is used to communicate with other inverters. Each inverter communicates with the network/Internet independently via its integrated data logger.

