The E3-HSBT is a control IED made for realizing high speed bus transfer for busbar sections supplying induction machine load; the device provides solution for bus transfer applications where quickness might be a crucial factor even to a point of a live bus transfer. It is a member of the DAUT product type in the EuroProt+ product family. The EuroProt+ family complex protection in respect of hardware and software is a modular device. Because of the modular architecture, the modules are assembled and configured according to the user’s requirements; from that point on, the software determines the functions.