Fronius Symo Advanced 12.0-3 12kW Three-Phase String Inverter – 208/240VAC, 4,210,091,801

Reliable Commercial Solar Performance with Advanced Safety

The Fronius Symo Advanced 12.0-3 12kW Three-Phase String Inverter is designed for commercial and large residential solar installations that demand dependable performance, flexible system design, and long-term reliability. Delivering 12kW of AC output on 208/240VAC three-phase service, this grid-tied inverter combines high conversion efficiency with advanced arc fault protection and integrated monitoring to help maximize energy production while simplifying installation and maintenance.

Built for North American solar applications, the Symo Advanced platform features multiple MPPTs for improved energy harvest across varying roof orientations and shading conditions. Its wide DC operating range and flexible string sizing make it an excellent choice for schools, agricultural buildings, small businesses, warehouses, and commercial rooftops.

Whether you're upgrading an existing PV system or installing a new commercial array, the Fronius Symo Advanced delivers the performance and proven reliability installers have come to expect from Fronius.

Why Choose the Fronius Symo Advanced 12.0-3?

• 12kW continuous AC output for commercial and large residential solar systems
• Three-phase operation for 208V and 240V electrical services
• Multiple MPPTs optimize production from arrays with different roof planes or orientations
• High-efficiency transformerless design maximizes energy harvest
• Integrated AFCI (Arc Fault Circuit Interruption) enhances system safety
• Built-in system monitoring with Fronius online monitoring capabilities
• Wide DC voltage operating range provides flexible PV string design
• Outdoor-rated enclosure suitable for demanding installation environments
• Designed for North American utility-interactive applications

Ideal Applications

The Fronius Symo Advanced 12.0-3 is well suited for:

• Commercial rooftop solar systems
• Agricultural buildings and farms
• Municipal and institutional facilities
• Industrial buildings
• Multi-family properties
• Large residential homes with three-phase service

Pair It With

Complete your commercial solar installation with:

• High-efficiency monocrystalline solar panels
• Commercial roof or ground-mount racking systems
• Rapid shutdown devices (where required)
• AC and DC disconnects
• Combiner boxes and BOS components
• Fronius monitoring accessories

Technical Specifications

Why Buy from US Solar Supplier?

When you purchase from US Solar Supplier, you're backed by a knowledgeable team dedicated to helping your project succeed. We offer competitive pricing, expert product guidance, fast nationwide shipping, and access to complete balance-of-system components so you can source everything for your installation in one place.

Whether you're an experienced installer or managing your first commercial project, we're here to help you choose the right equipment and keep your installation moving forward.

What's Included

• (1) Fronius Symo Advanced 12.0-3 12kW Three-Phase Grid-Tied String Inverter
• Installation documentation

Note: This inverter is intended for grid-tied photovoltaic systems and requires compatible solar modules and applicable balance-of-system equipment. Professional installation is recommended to ensure compliance with local electrical codes and utility interconnection requirements.