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As Brazil's solar energy industry develops rapidly, ensuring the safety of solar power generation systems has become increasingly crucial. Particularly with the release of Norma Técnica 44/2023, Brazil's electricity regulatory authority has further strengthened safety requirements for solar systems—especially regarding the Rapid Shutdown function for rooftop photovoltaic (PV) systems. To comply with this new safety standard, selecting a reliable and compatible Rapid Shutdown system is essential. In this regard, Fonrich has emerged as the preferred choice for many Brazilian PV installers, leveraging its technological innovation and market experience.
Norma Técnica 44/2023 is a key regulation issued by Brazil's National Electric Energy Agency (ANEEL), aiming to enhance the safety of solar systems—especially their responsiveness to potential hazards such as arc faults. For residential and commercial customers installing rooftop solar systems, the new regulation mandates the installation of compliant Rapid Shutdown devices. These devices quickly cut off the current of solar power systems during emergencies, preventing safety accidents such as fires and electric shocks.
For Brazil, a country with abundant sunlight and complex climatic conditions, the implementation of this standard is undoubtedly a necessary step to ensure the long-term healthy development of the PV industry. Rooftop PV systems, in particular, pose certain safety risks during installation and daily maintenance. How to ensure system safety and compliance without compromising efficiency has become an urgent issue.

Fonrich’s Rapid Shutdown system is fully compliant with Brazil’s Norma Técnica 44/2023 safety standard. It can quickly and efficiently cut off the current of PV systems, eliminating potential hazards such as arc-induced fires in the event of system failures. Fonrich’s technical design fully considers local environmental characteristics, meeting the needs of PV power plants across different regions of Brazil. Whether for urban residential rooftops or commercial installations in remote areas, Fonrich’s products respond rapidly to cut off power in a timely manner, ensuring system and personnel safety.
Why Fonrich?Fonrich’s Rapid Shutdown system excels in arc detection and response speed, fully meeting the requirements of Norma Técnica 44/2023 and ensuring the compliance and safe operation of PV systems in the Brazilian market.
For Brazilian rooftop solar installers, component compatibility is one of the most critical factors when selecting products. After rigorous testing, Fonrich’s Rapid Shutdown system seamlessly integrates with mainstream solar inverters on the market, such as Sungrow, Huawei, and Fronius. This simplifies the installation process, reduces compatibility issues between devices, and improves installation and commissioning efficiency.
Fonrich’s modular design allows installers to quickly integrate the Shutdown device without the need for large-scale modifications to existing electrical systems. This high compatibility not only significantly shortens installation time but also effectively reduces renovation costs.
Why Fonrich?In the Brazilian market, Fonrich’s Rapid Shutdown system is compatible with mainstream inverters, offering flexible installation, simplified system integration, and enhanced operational efficiency.
As the scale of solar systems expands, remote monitoring and information management have become indispensable for maintaining efficient operation. Fonrich’s Rapid Shutdown system supports both local operation and robust remote access capabilities. Through RTU protocols and industrial wireless communication, customers can easily monitor the real-time operating status of PV systems via an intelligent platform.
The remote monitoring system enables operators to view real-time data such as current, voltage, and power generation, detect potential faults promptly, and take action—reducing the need for manual inspections and improving operation and maintenance (O&M) efficiency. In emergencies, the system can quickly shut down faulty strings via remote operation, ensuring the safety of the entire power plant.
Why Fonrich?Fonrich’s intelligent management and remote monitoring functions allow users to control and monitor PV system operations anytime, anywhere, enhancing O&M efficiency and reducing downtime and maintenance costs.
With the implementation of Norma Técnica 44/2023, demand for Rapid Shutdown systems in Brazil’s PV market will continue to grow. As a leading brand in the industry, Fonrich has become the preferred choice for Brazilian PV installers due to its high compatibility, reliability, and intelligent management system. Whether for residential rooftops, commercial PV systems, or large-scale ground-mounted power plant projects, Fonrich’s Rapid Shutdown products provide comprehensive safety protection, ensuring the long-term stable operation of power plants.
Choosing Fonrich means choosing a safer, more reliable guarantee—allowing your solar power plant to operate smoothly within a compliant framework from installation to daily operation.
How does Fonrich’s Rapid Shutdown system meet Brazil’s new safety standard?Fonrich’s Rapid Shutdown system is fully compliant with Norma Técnica 44/2023, enabling quick current cutoff to avoid arc-induced fires and other safety hazards.
What is the compatibility of Fonrich’s products?Fonrich’s Rapid Shutdown system seamlessly integrates with mainstream PV inverter brands such as Sungrow, Huawei, and Fronius.
What are the intelligent features of Fonrich’s Rapid Shutdown system?Fonrich’s system supports remote monitoring and information management, enabling real-time PV system status tracking and fault detection.
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