Mobile substations are portable power distribution system s that can be quickly set up in different locations. spot and flexibly ready for use. Practical handling and a wide range of configuration op egulations (accident prevention). By using our devices, you have met. For procurement professionals, electrical contractors, and project managers, choosing the right Distribution Box (DB Box) is a critical decision that directly impacts system safety, reliability, and long-term operating costs. For various uses in site maintenance, in industry or on a construction site, you can rely on our small mobile distributor boxes to meet the tou hest requirements. Components: Includes transformers, cooling systems, switchgear, metering systems, protection relaying systems, auxiliary power supplies, surge protection, and.