Da is a series of locomotives used by

Swedish State Railways The Swedish State Railways ( sv, Statens Järnvägar) or SJ, originally the Royal Railway Board ( sv, Kungl. Järnvägsstyrelsen), was the former government agency responsible for operating the state-owned railways in Sweden. It was created i ...

( sv, Statens Järnvägar, SJ). 93 units were built by

ASEA ''Allmänna Svenska Elektriska Aktiebolaget'' (English translation: General Swedish Electrical Limited Company; Swedish abbreviation: ASEA) was a Swedish industrial company. History ASEA was founded in 1883 by Ludvig Fredholm in Västerås a ...

between 1952 and 1957. They remained in service until the 1990s.

History

After the last D-locomotive had been delivered in 1943, SJ needed more locomotives during the late 1940s with new lines being electrified. The solution was the Da, a modernised version of the D-type including the rigid-frame

coupling rod A coupling rod or side rod connects the driving wheels of a locomotive. Steam locomotives in particular usually have them, but some diesel and electric locomotives, especially older ones and shunters, also have them. The coupling rods transfer t ...

layout that was by then regarded as obsolete by most other undertakings. It was used as a universal locomotive throughout the SJ system. A more powerful, but slower Dm series was delivered at the same time for use on

Malmbanan The Iron Ore Line ( sv, Malmbanan) is a long railway line between Riksgränsen and Boden in Norrbotten County, Sweden, owned by Trafikverket (the Swedish Transport Administration). The line also contains two branches, from Kiruna to Svappavaar ...

. During the 1970s the Da's were rebuilt, including increased cab comfort. SJ started retiring the locos during the 1980s and had finished the task by the mid 1990s. Some units were bought by Tågfrakt and Tågkompaniet, later being sold to NetRail. One unit has been preserved by the

Swedish Railway Museum The Swedish Railway Museum, ( sv, Sveriges Järnvägsmuseum), in Gävle, Gästrikland, Sweden is the national museum for Sweden's railway history. The Swedish Railway Museum is tasked with acquiring, preserving and supplying knowledge about Swedis ...

External links

Järnväg.net page on Da
{{Swedish railway stock ASEA locomotives Da 15 kV AC locomotives Railway locomotives introduced in 1952 Standard gauge locomotives of Sweden 1′C1′ locomotives