A distribution box uses MCBs, RCDs, and busbars to protect circuits, prevent shocks, and ensure safe power distribution in homes and buildings. You use a distribution box to divide electrical power into smaller circuits. This box keeps your home or building safe from electrical. This right here is the inside of a distribution box — one of the most overlooked parts of your septic system. more Audio tracks for some languages were automatically generated. It typically sits between the septic tank and the drainfield and serves as a traffic director for the partially treated wastewater, making sure.