Three railcars were delivered to Trenčianska elektrická železnica in 1951 as class M 46.0. Later they were designated EMU 46.0, EMU 46.1 and 411.9.
In 1973, M 46.001 was destroyed. In 1987, wagon Balm/u 649 was converted into railcar EMU 46.1003.
In 1988, EMU 46.003 and EMU 46.002 were overhauled and renumbered EMU 46.1001 and EMU 46.1002 respectively.
