TS Class 5 was a series of six tram

Tram

A tram is a passenger rail vehicle which runs on tracks along public urban streets and also sometimes on separate rights of way. It may also run between cities and/or towns , and/or partially grade separated even in the cities...

s built by Skabo Jernbanevognfabrikk

Skabo Jernbanevognfabrikk

Skabo Jernbanevognfabrikk was a mechanical workshop focusing on design and construction of railcars. It was established by Hans Skabo in Drammen, Norway in 1864; it became the first rail car factory in the country when it took delivery of the cars for Kongsvingerbanen...

 for Trondheim Sporvei

Trondheim Sporvei

Trondheim Sporvei was a municipally owned tram operator in Trondheim, Norway that existed between 1936 and 1974. The company operated the municipal parts of the Trondheim Tramway until it was merged with A/S Graakalbanen and Trondheim Bilruter to create Trondheim Trafikkselskap...

. Four were delivered from December 1937 to February 1938, while two were delivered in May 1942.

The first four were delivered with four Siemens

Siemens AG

Siemens AG is a German multinational conglomerate company headquartered in Munich, Germany. It is the largest Europe-based electronics and electrical engineering company....

 motors, each at 33 kW. The last two were delivered during World War II with British Thomson-Houston

British Thomson-Houston

British Thomson-Houston was a British engineering and heavy industrial company, based at Rugby, Warwickshire, England. They were known primarily for their electrical systems and steam turbines. They were merged with the similar Metropolitan-Vickers company in 1928, but the two maintained their own...

, each at 31 kW. The two BTH-engines underperformed compared to the sister engines, and were the only delivery to the Trondheim Tramway

Trondheim Tramway

Trondheim Tramway located in Trondheim, Norway consists presently of one 8.8 km tramway line, Gråkallbanen, from St. Olav's Gate in the city centre through Byåsen to Lian Station in Bymarka...

 not from Siemens throughout the tramways history. The Class 5 was the first bogie

Bogie

A bogie is a wheeled wagon or trolley. In mechanics terms, a bogie is a chassis or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar...

 cars used by Trondheim Sporvei. They remained in service until the Dalsenget fire

Dalsenget fire

The Dalsenget fire was a disaster where the Dalsenget Depot of Trondheim Sporvei burnt down, destroying almost all of the modern tram fleet. 26 trams, 16 trailers and one working tram were destroyed, and three cleaners lost their lives...

 on 10 October 1956, in which five of the trams burnt down. No. 6 survived the fire, and has been preserved at Trondheim Tramway Museum

Trondheim Tramway Museum

Trondheim Tramway Museum is a tram museum located in Trondheim, Norway. The museum offers in addition to a display of the tramway history of Trondheim also heritage trips with old trams on the sole remains of the tramway in Trondheim, Gråkallbanen...

.

In November 1942, Skabo also delivered five trailers, numbered 101 through 105. All of these were lost during the fire.