Fronius Rapid Shutdown Box-Duo: Enhancing PV System Safety

The Fronius Rapid Shutdown Box-Duo is a high-quality safety solution designed for residential and commercial solar installations. It provides rapid PV system de-energization in compliance with modern safety standards, protecting personnel, first responders, and equipment during maintenance or emergency situations.

Key Features & Benefits

• Rapid Shutdown Functionality: Immediately de-energizes DC circuits to ensure safety during maintenance or emergencies

• Duo Channel Design: Allows two independent strings or arrays to be safely controlled

• Easy Installation: Pre-wired and compact, compatible with Fronius string inverters

• Compliance: Meets NEC 2017 / 2020 rapid shutdown requirements and international safety standards

• Durable Construction: Weather-resistant enclosure suitable for outdoor mounting

• Enhanced Safety: Reduces risk of electric shock and fire hazards

Technical Highlights

• Compatible Inverters: Designed for Fronius string inverter systems

• Input Voltage: Suitable for standard PV string voltages

• Output: Controlled shutdown of DC strings

• Enclosure Rating: Outdoor-rated, robust and durable

• Installation: Wall-mounted, compact footprint

Ideal Applications

• Residential rooftop solar systems

• Commercial PV installations

• Systems requiring NEC-compliant rapid shutdown

• Any installation prioritizing PV system safety

The Fronius Rapid Shutdown Box-Duo ensures rapid, reliable, and code-compliant de-energization of solar arrays, providing peace of mind for installers, maintenance personnel, and homeowners.

Document: Specification Sheet

Advanced Safety Features of the Fronius Rapid Shutdown Box-Duo

The Fronius Rapid Shutdown Box-Duo is engineered to maximize the safety of photovoltaic (PV) solar systems by quickly reducing DC voltage to safe levels during emergencies. As a trusted Fronius product, it meets stringent international safety standards, helping to protect both people and equipment. Its compact design supports quick installation alongside PV arrays, ensuring minimal system downtime while maintaining optimal performance and safety compliance.

Seamless Integration with Fronius Inverter Systems

Designed specifically to work harmoniously with Fronius inverters, the Rapid Shutdown Box-Duo enhances system reliability and operational efficiency. Its intelligent communication technology allows constant monitoring and rapid response during faults or shutdown commands. This ensures a safe and compliant PV installation, reducing risks during maintenance or emergency situations, a critical factor for residential and commercial solar applications.

Durability and Compliance for Long-Term Use

Constructed with robust materials that withstand harsh environmental conditions, the Fronius Rapid Shutdown Box-Duo guarantees long-lasting durability. It complies with all relevant PV system safety regulations, including NEC 2017 and 2020 rapid shutdown requirements. Combining resilient build quality with advanced electronic components ensures that your solar installation remains safe, reliable, and compliant throughout its lifespan.