FTU is a remote terminal unit for distribution automation which controls and monitors switches on the distribution lines such as Load Break Switch, Recloser, or RMU (Ring Main Units) and measures various electrical quantities of the line and transmits data to control center through. FTU is a remote terminal unit for distribution automation which controls and monitors switches on the distribution lines such as Load Break Switch, Recloser, or RMU (Ring Main Units) and measures various electrical quantities of the line and transmits data to control center through. 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. 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 Terminal Units main function is to realize Fault Detection, Isolation and Restoration (FDIR), reducing outage time, improving reliability of power supply. It mainly monitors and controls the switching equipment in the distribution system and has functions such as fault location and isolation. Data Transfer Unit (DTU), also known as a "data transmission unit, concentrator, converter, or repeater," typically functions as a router or gateway.