212 three-car units (106 trains) built between 1996 and 2000, and first
entered service in June 1998.
Each six-car train is formed of 2 three-car units. Every odd-numbered unit
must be coupled with an even-numbered unit.
Each unit is formed of a driving motor car (DM), a trailer (T), and an
uncoupling non-driving motor car (UNDM). These cars are numbered
51xxx-52xxx-53xxx. All units between 51701 and 51726 (inclusive) carry
deicing equipment in their trailer car.