This guide covers what a distribution board is, exactly what lives inside it, how it distributes power to each circuit, the different types of protection available, and how to safely simulate a multi-circuit distribution board using ElectraSim — free, browser-based, no. This guide covers what a distribution board is, exactly what lives inside it, how it distributes power to each circuit, the different types of protection available, and how to safely simulate a multi-circuit distribution board using ElectraSim — free, browser-based, no. This guide covers what a distribution board is, exactly what lives inside it, how it distributes power to each circuit, the different types of protection available, and how to safely simulate a multi-circuit distribution board using ElectraSim — free, browser-based, no installation required. 💡. In this video, we are going to wire a power distribution box. This small box has an rccb switch that protects the outputs from electric shock and also has a miniature switch that protects the outputs from overload and short circuit. And all the switching and protective devices are installed in the. Distribution board is a safe system designed for house or building that included protective devices, isolator switches, circuit breaker and fuses to safely connect the cables and wires to the sub circuits and final sub circuits including their associated Live (Phase) Neutral and Earth conductors. 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.