This guide explores control panels, electrical boxes, breaker panels, bus bars, junction boxes, and custom enclosures to help you understand their sizes, types, and common applications. Used in industrial automation and process control. The hub distributes electrical power from a single input source to various circuits throughout a building. Understanding its significance. What Is a Distribution Box? Types, Uses & How to Choose A distribution box, also known as a power distribution box or electrical distribution box, is used to distribute electrical power safely to multiple circuits. Its flexible design lets you add more as power needs.