Vertical per-phase Isolation Distribution Board in 4-tier structure with provision for 8 pole (MCB / Isolator / RCD) incomer and provision for 2 pole (MCB / Isolator / RCD) as sub-incomer with single phase outgoing. Separate neutral links are provided for per phase isolation. These Distribution Boards come with earthing link, 100A tinned electrolytic copper busbar and wire sets. Top and bottom, removable gland plates with knockouts. Mounting of these boards can be flush or surface.