The Distribution Terminal Unit (DTU) is a core terminal device designed specifically for modern smart distribution networks. Essentially, it is an intelligent device that integrates data collection, processing, transmission, and control functions. As an important component of the distribution. This page is a practical guide for designing feeder automation terminals (FTU, DTU and TTU) with the right mix of sensing, communication, power, security and IC choices. It helps map real grid scenarios into a robust architecture, a realistic checklist and brand-ready component selections. Feeder. Each plug-in can select 1 group of three-phase AC voltage and 2 groups of three-phase AC current analog (or other) inputs. The basic contents include voltage, current, frequency, power and power factor, and up to 6 groups of modules can be configured. It can be configured with 6 direct current. Distribution Automation Terminals (DTU and FTU) by Application (Substation, Pole Mounted Switch, Distribution Transformer, Others), by Types (Distribution Terminal Unit (DTU), Feeder Terminal Unit (FTU)), by North America (United States, Canada, Mexico), by South America (Brazil, Argentina, Rest of. The DTU series distribution automation terminal device is a protection and monitoring terminal product developed for multi line collection sites such as ring main units and small switch stations in distribution networks.