Distribution Box: Handles main supply voltage (220V–690V) with current ranging from tens to hundreds of amps. Circuit breakers: Install circuit breakers for each area, workshop, machinery, equipment to protect the electrical system from overloads, short circuits. Each outgoing line can be individually. DuFab Manufacturing's prefabricated solutions, such as Temporary Power Distribution Equipment, demonstrate how modular engineering simplifies setup. Each enclosure is pre-wired, tested, and built to NEC standards, making it easier to deploy safe, compliant power distribution at job sites or. A distribution box, also known as a power distribution box or electrical distribution box, is used to distribute electrical power safely to multiple circuits. The range of applications extends from pure energy distribution in buildings to building automation and through to industrial plants. SMART DISTRIBUTION BOXES FOR FLEXIBLE BUILDINGS.