T locomotives were six-coupled tank engines operated by the Royal Saxon State Railways for mixed duties on main and branch lines.
As a successor to the four-coupled Saxon Class IV T the Sächsische Maschinenfabrik in Chemnitz developed a six-coupled tank locomotive.
Not only were these locomotives used to haul suburban services, but in the end they were put in charge of all types of passenger trains on branch and main lines in Saxony's central mountains.
After World War I some of the locomotives had to be handed over to Poland, Belgium and France as reparations in accordance with the terms of the Versailles Treaty.
The locomotives had a boiler barrel, made from two shells, as well as two steam domes, which were linked by an internal connecting pipe.
Later the preheater was positioned on the left hand side next to the chimney on all locomotives, which gave them their characteristic appearance.