Legrand Viadis XL3 S Busbar Trunking System

The Legrand Viadis XL3 S Busbar Trunking System is a prefabricated, plug-in power distribution solution delivering rated currents from 250 A to 4000 A through factory-assembled, IP40-rated enclosures that replace conventional cable-and-tray wiring for main distribution runs in commercial buildings, data centres, industrial facilities, and high-rise towers. The system comprises straight lengths, elbows, tee-joints, end-feeds, and tap-off boxes in a modular assembly that is designed for rapid on-site installation — each section plugs together with a single wrench, eliminating the complex cable pulling, termination, and testing that conventional cable distribution requires. The copper or aluminium conductor bars are fully insulated with epoxy-resin coating, providing creepage and clearance distances compliant with IEC 60439-2 even in the humid coastal environments of Jeddah, Dammam, and Yanbu.

The IP40 protection standard of the standard Viadis system suits the enclosed plant rooms and riser shafts of modern Saudi high-rise towers and commercial complexes, while the IP55 option (available for external or semi-external runs) extends applicability to covered outdoor walkways and partially exposed plant decks in the industrial facilities of SABIC and ARAMCO. The busbar trunking's power density — delivering 4000 A through an enclosure only 200 mm wide — is significantly superior to equivalent cable installations, which would require multiple parallel cable sets with complex balancing and derating calculations. This compact cross-section is particularly valuable in the congested risers and cable basement of Riyadh's high-rise towers such as the Kingdom Centre expansion, Burj Rafal, and the PIF Vision 2030 office towers under construction in King Abdullah Financial District (KAFD).

Saudi Arabia's data centre construction boom, driven by Vision 2030's digital economy goals and the National Data Centre programme, represents a major growth market for busbar trunking. Hyperscale and enterprise data centres in Riyadh's ICT cluster, NEOM's digital hub, and the SEC-backed smart city infrastructure require flexible, expandable power distribution that can accommodate changing server rack densities without rewiring. The Viadis system's plug-in tap-off boxes allow new loads to be connected or existing loads to be reconfigured without interrupting the energised trunk run — a live-reconfiguration capability that conventional cable distribution cannot match. KACST (King Abdulaziz City for Science and Technology), STC (Saudi Telecom Company) data centres, and the new Hyperscale facilities being developed by Alibaba Cloud and AWS in Riyadh and Jeddah all specify prefabricated busbar trunking for their medium-voltage distribution.

Razz Middle East provides a complete Viadis project service including system design, 3D routing layout generation, factory fabrication to project-specific lengths, site installation supervision, and commissioning testing. Our engineering team uses Legrand's Caneco BT software to perform voltage drop, thermal, and selectivity calculations compliant with IEC 60364 for submission to SEC and MOMRA. Delivery lead times from Legrand's European factory are typically 6–8 weeks for non-standard lengths, with standard 3-metre sections held in Riyadh stock for emergency requirements.