It typically houses the main switch, circuit breakers, and busbars for distributing power to different sections of a building. Single Phase Distribution Box generally consists of Double Pole MCBs, Single Pole MCBs, and RCCBs. You will learn to build a safe, efficient, and professional electrical system today. Circuit breaker wiring configurations involve organizing main switches, busbars. A distribution box uses MCBs, RCDs, and busbars to protect circuits, prevent shocks, and ensure safe power distribution in homes and buildings. In this comprehensive guide, we will explore.