The main function of a Distribution Box is to act as a central hub. Inside, the power is split into multiple, smaller circuits that run to different areas—like the kitchen, bedrooms, lighting, and air conditioning. Integrating smart grid features with these junction boxes improves energy efficiency and allows for real-time monitoring of the power system. This box protects your home from electrical dangers and facilitates easy control and monitoring of your. What Is a Distribution Box (DB / Distribution Board)? A distribution box (distribution board / DB box) receives incoming power from the mains supply and safely distributes it to multiple branch circuits. The boxes also store protective equipment devices.