Reserved dimensions for double-row distribution boxes

Typical double-row distribution boxes have widths ranging from 400 mm to 484 mm, heights from 470 mm to 530 mm, and depths from 117 mm to 139 mm, accommodating 32–34 modules over two horizontal rows.Standard DimensionsActi9 Disbo 32-way, 2-row flush mount: Width 400 mm, Height 530 mm, Depth 117 mm, suitable for 32 ways with DIN rail mounting, IP40 protection, electro-galvanized steel enclosure .Schneider Electric SE12B2D 2-row DIN rail enclosure: Width 470 mm, Height 484 mm, Depth 139 mm, supports 34 modules (18 mm each) over two horizontal rows, steel construction .Design ConsiderationsModule capacity: Double-row boxes typically accommodate 32–34 modules, with each module usually 18 mm wide.Material: Commonly made from steel or electro-galvanized steel for durability and compliance with IEC standards.Mounting: Flush-mounted or surface-mounted options are available depending on installation requirements.Protection: IP40 is standard for indoor installations, ensuring protection against solid objects larger than 1 mm.Additional NotesSome distribution boxes allow custom positioning of main spigots or connectors, which can affect installation space requirements .Always verify the DIN rail configuration and module spacing to ensure compatibility with MCBs, RCCBs, or other modular devices .For compact installations, consider the depth and width relative to wall recesses or floor slab integration. These dimensions provide a reliable reference for planning electrical installations using double-row distribution boxes in residential, commercial, or industrial settings.