Permanent magnet traction AC motor, with: -a continuous power of 110 kW or more but not more than 150 kW, -a liquid cooled system, -a total length of 460 mm or more but not more than 590 mm, -a total width of 450 mm or more but not more than 580 mm, -a total height of 490 mm or more but not more than 590 mm, -a weight of not more than 310 kg, -4 mounting points