DEF RAIL, a subsidiary of the Réseau DEF, a French manufacturer since 1958, specializes in the design, integration, and commissioning of fire safety solutions dedicated to the railway sector.

Drawing on the extensive expertise and recognized know-how of the Réseau DEF, a leading player in fire safety for several decades, DEF RAIL supports project owners, operators, and industrial organizations in the delivery of complex railway projects in France and internationally.

Thanks to its deep understanding of railway-specific requirements, DEF RAIL provides a comprehensive approach to fire safety projects. The company is involved throughout the entire project lifecycle, including design studies, equipment supply, system engineering, configuration, commissioning, testing support, and maintenance services. This end-to-end approach ensures reliable, high-performance solutions that comply with the most stringent safety standards.

DEF RAIL contributes to major projects shaping the transport infrastructure of the future. Among its key references is the Grand Paris Express, one of Europe’s largest urban transportation projects, for which the company supplies fire safety systems for Lines 15, 16, 17, and 18. DEF RAIL is also involved in flagship projects such as the Eurotunnel PAX Shuttle fleet, demonstrating its ability to address fire safety challenges in highly demanding railway environments.

The company offers a comprehensive portfolio of products and services tailored to railway infrastructure, ancillary buildings, tunnels, stations, and rolling stock. Its solutions include state-of-the-art fire detection systems, multi-sensor detectors, fire alarm and safety control panels, as well as supervision and monitoring systems. In addition, DEF RAIL provides engineering expertise, technical studies, and system configuration services to ensure seamless integration and optimal performance for every project.

By combining innovation, technical excellence, and close customer collaboration, DEF RAIL is committed to delivering robust and sustainable fire safety solutions that protect people, safeguard infrastructure, and support the continuity of railway operations.