Article Overview

Common UAE secondary distribution boxes include the DUNES S series, Schneider Electric DBSeT, and various wall-mounted SMDBs with current ratings up to 800A, designed for harsh Middle Eastern conditions.

Popular Models

1. DUNES S Series (Al Hamad Switchgear)

  • Designed for secondary distribution in commercial, residential, and industrial projects.
  • Current ratings: Up to 800A using MCCBs and MCBs from ABB.
  • Sizes: Three complementing sizes, type-tested to IEC 61439 standards and 50°C ambient temperatures.
  • Mounting: Wall-mounted or floor-mounted.
  • Applications: High-rise buildings, hotels, rail, bus stations, and filling stations.
  • Construction: Robust, standardized design suitable for UAE climatic conditions . 2. DBSeT (Schneider Electric UAE)
  • Supports Acti9, Easy9, and Resi9 devices.
  • Current ratings: Up to 250A.
  • Design: Ergonomic, modular, and compatible with EcoStruxure for remote monitoring.
  • Applications: Residential, commercial, industrial, and critical facilities.
  • Features: Simplified installation, aesthetic design, and eco-friendly production . 3. General UAE SMDBs
  • Construction: Sheet steel clad, wall-mounted, IP65/IP66 ratings for weatherproofing.
  • Current ratings: 250A, 400A, 800A with fault ratings up to 25kA.
  • Incomers: MCB, ELCB, or isolator; outgoing circuits via SP or TP MCBs.
  • Dimensions: Vary by manufacturer and current rating; typically modular to accommodate 1–72 outgoing circuits.
  • Applications: Industrial, residential, commercial, and renewable energy projects .

Key Considerations for UAE Installations

  • Compliance: IEC 61439 or BS EN 61439-2 standards.
  • Environmental suitability: Designed for high temperatures (up to 50°C) and dusty or humid conditions.
  • Mounting options: Wall-mounted or floor-standing depending on space and load requirements.
  • Future-proofing: Modular design allows for expansion and integration with smart monitoring systems. These secondary distribution boxes serve as zonal hubs, distributing power from the Main Distribution Board (MDB) to Final Distribution Boards (FDBs) for lighting and power circuits, ensuring safety, reliability, and compliance in UAE buildings .

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