Construction of Prefabricated Cable Trays in Belgium

Most Belgian cable trays are prefabricated, manufactured from steel sheets and treated with galvanization and coatings according to strict standards.Belgian cable trays, such as those produced by companies like Vergokan and Trayco, are generally prefabricated elements made from steel sheets that are roll-formed into U-profiles or other shapes depending on the type of tray (e.g., KBS, KBSI, KG, KGI, KBSTi, NATO) and the intended load and cable capacity . These trays are fabricated in controlled factory conditions, ensuring compliance with EN 61537 and Belgian regulations for electrical installations (AREI), and are treated with hot-dip galvanization (EN ISO 1461) and thermosetting powder coatings for corrosion resistance . Prefabrication allows for standardized dimensions, perforations, and sidewall heights (ranging from 15 mm to 110 mm) and ensures that trays meet load-bearing requirements and quality standards . Some trays are supplied with longitudinal and circular perforations to facilitate cable passage, while others, like NATO-type trays, have non-perforated sidewalls . The prefabricated approach also supports modular installation, making it easier to join sections, separate LV and ELV cables, and adapt to future expansions. While prefabrication is the standard practice in Belgium, customized solutions and tailored lengths can be provided by manufacturers to meet specific project requirements, meaning that not every installation is strictly off-the-shelf . Belgian suppliers also offer advisory services to optimize tray selection and installation, ensuring that prefabricated components are adapted to the project's technical and regulatory needs . In summary, Belgian cable trays are predominantly prefabricated, but manufacturers can provide customized or project-specific solutions while maintaining compliance with national and European standards, ensuring both quality and flexibility in installation .