About This Product

The VERTO 33.3 PLUS SPD 1+2 is a 33.3 kW three-phase hybrid inverter from Fronius designed for larger residential, commercial, agricultural and small-business solar installations. It combines high-capacity PV conversion with a dedicated high-voltage battery interface, full backup capability and advanced energy-management functions. The Plus version differs from the standard Verto by adding battery connectivity and backup support, making it suitable for larger solar-plus-storage systems.

Who This Product Suits

The VERTO 33.3 PLUS SPD 1+2 suits larger three-phase properties requiring a high-output hybrid inverter with battery support and backup capability. Typical applications include commercial buildings, farms, apartment blocks and larger homes with substantial solar arrays and high daytime or evening electricity consumption. It is particularly useful where future battery integration, backup power and advanced site energy management are part of the system design.

Specifications Explained

The VERTO 33.3 PLUS SPD 1+2 provides 33.3 kW nominal three-phase AC output and supports PV arrays up to 50 kWp. It uses three independent MPPT trackers with an operating range of 150-870 V, allowing multiple array orientations or roof sections to be managed independently.

The inverter includes a dedicated high-voltage battery input operating from 150-700 V and is designed to work with compatible battery systems such as the Fronius Reserva. The Verto Plus platform also supports full backup operation and Fronius Backup Power Boost, which can provide increased short-duration backup power to help start higher-demand loads.

The SPD 1+2 version includes Type 1+2 DC surge protection, while the inverter also incorporates arc-fault detection, DC insulation monitoring, reverse-polarity protection and residual-current monitoring. Its IP66 enclosure and operating temperature range of -40°C to +60°C allow indoor or outdoor installation, while Fronius Active Cool technology manages inverter temperature during higher-load operation.

Summary

The VERTO 33.3 PLUS SPD 1+2 combines 33.3 kW three-phase output, 50 kWp maximum PV capacity, three MPPT trackers and high-voltage battery connectivity in a commercial-grade hybrid inverter. Its backup capability, integrated surge protection, IP66 enclosure and broad operating range make it well suited to larger solar and battery installations where system flexibility, storage integration and long-term expandability are priorities.

Weights & Measurements

About Fronius

Fronius is a long-established European manufacturer founded in 1945 and is well known for solar inverters, battery systems and energy-management equipment. The company places a strong focus on serviceability, system monitoring and long-term product support. In Australia, Fronius has an established technical and service presence, with its inverter platforms widely used across residential, commercial and agricultural solar installations.