This report provides a comprehensive analysis of electrical distribution board (DB) box sizes, including physical dimensions, electrical capacities, and market trends based on current 2025-2026 standards. Check out this quick guide: Think about how many devices you need, where you will install the box, and the environment. Actual units use PNP status indicator, NPN status indicator, or neither. Dimensions are shown in mm (in. 81 ft)]. Plastic Electrical Box, also known as a consumer control unit or electricity control unit. It includes specifications for TOP-TS, TOP-TF, TOP-LS, TOP-PS, TOP-PF, and TOP-S distribution boxes that range from 1-way to 36-ways.