to the Iore class, however, these then still in production types were excluded from the TRAXX family in publications after 2007. DBAG Class 185 family, Bombardier TRAXX platform In July 1998, Adtranz received a follow-on order for 400 more locomotives for medium-weight freight trains, the DBAG Class 185. The double voltage Class 185 was meant for international operation, and was also dubbed Europalok. The basic concept of the running gear, the axle hung motors, the ester cooled inverters and transformer was maintained from the Class 145. In addition to the electronics for double voltage operation, modifications included the provision for the installation of the full variety of train protection systems in use in Europe, and the lowering of the roof by 105 mm to fit the vehicle in the international UIC 505-1 loading gauge. In 2001 Bombardier bought Adtranz, thus acquiring locomotive building technology. Under Bombardier, the Class 185 was developed into a family like that of the Class 145, with private railway and passenger (DBAG Class 146.1) versions. In May 2003, Bombardier also received an order for a quadruple system version from the Swiss Federal Railways (SBB). In September 2003, Bombardier gave the Class 185 family a brand name, TRAXX, intended to allude to the terms 'traction', 'track' and 'attraction'. The acronym stands for Transnational Railway Applications with eXtreme fleXibility. The first letter of TRAXX type designations provides for differentiation according to the area of application, with F for freight and P for passenger. The original system also tentatively included H for heavy-haul and S for high-speed, but no actual vehicles were delivered under this designation. The number following the first letter indicates the top speed of the locomotive in kilometers per hour. The next two letters indicate the supply system, with AC for alternating current electric locomotives, DC for direct current electric locomotives, MS for multi-system locomotives capable of operating both under AC and DC overhead wires, and DE was foreseen from the start for an eventual Diesel-electric version. An extra P letter at the end was to designate powerheads (traction heads), that is locomotives with one driving cabin for push-pull operation. An also optional number at the end designates different versions, later used for the designation of generations. In the new system, the factory designation of the DBAG Class 185 and its sisters with other railways became TRAXX F140 AC, that of the DBAG Class 146.1 TRAXX