This section explains the latest dimensional measurement technologies for the enclosures of distribution boards, switchboards, control panels, and cubicles (which are important devices in electricity reception and distribution systems), basic knowledge required for their. This section explains the latest dimensional measurement technologies for the enclosures of distribution boards, switchboards, control panels, and cubicles (which are important devices in electricity reception and distribution systems), basic knowledge required for their. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. The. The floor cabinet is made of 2. 0mm thick cold-rolled steel plate, and the lighting distribution box and control box that are greater than or equal to 600mm are made of 2. They are installed outdoors or inside factories, so their enclosures require high dimensional accuracy in addition to high dustproofing, weather. The distribution box prevents that cascade — it receives power from the main supply, divides it into protected branch circuits, and isolates faults before they spread. It houses the circuit breakers, fuses, and protective relays that prevent electrical fires. The criteria for selecting the thickness of the sheet metal for the electrical distribution box cabinet are mainly based on the following aspects: ### Type and Purpose of the Electrical Distribution Box - **Lighting electrical distribution box**: It is usually used to control and distribute the.