A distribution box uses MCBs, RCDs, and busbars to protect circuits, prevent shocks, and ensure safe power distribution in homes and buildings. This box keeps your home or building safe from. Check electrical parameters: First understand the basic electrical parameters of Distribution box so that you can have a general understanding of the capacity and performance of the distribution box. You use a distribution box to divide electrical power into smaller circuits. Inside, you'll find parts like circuit breakers and fuses that protect the system from problems like overloads and short circuits. It is like the main control center for electricity. Power comes from outside and goes into this box.