 With the exception of series d and e, that had a coupled wheel diameter of 2,000 mm, the S 3/6 had a coupled wheel diameter of 1,870 mm, that allowed it to be deployed both in hilly terrain as well as on the plains.The permitted top speed of the locomotives was 120 km/h, regardless of the driving wheel diameter.Its performance increased during its production lifetime from 

Between 1908 and 1911, 23 locomotives were produced.