TS Class 1 was a series of twelve trams built by Hannoversche Waggonfabrik for Trondheim Sporvei.

In 1904, four unpowered trailers were delivered by HaWa and numbered 20–24.

They had a single compartment, with outdoor platforms at each end.

They made up part of the old 2.0 m (6 ft 7 in) wide trams, with benches along the length of the cars.

This Norwegian tram- or light rail-related article is a stub.