The trains were ordered by Euskotren in 1983, with the first unit being delivered in 1985. They entered service on 1 February 1986, originally in the Bilbao-Plentzia line, where they replaced the rolling stock inherited from FTS.[1] The trains had been intended for use in the Bilbao metro (which took over most of the Bilbao-Plentzia railway), but ultimately new trains were built for it. Thus, with the opening of the metro in 1995, the trains were transferred to the Txorierri, Urdaibai and Bilbao-San Sebastián lines.[2] The trains were built entirely in the Basque Country: the motor cars by CAF in Beasain, the non-powered cars by Babcock & Wilcox in Sestao and the electrical equipment by Westingouse in Erandio.[2][1]
The 20 trains originally consisted of 3 cars each. In 1996, 10 of them had a fourth car added, with the tree-car trains being used together with the 3500 series in the Urdaibai and Bilbao-San Sebastián lines. The remaining three-car trains had a fourth car added starting in 1999. All the new cars were built by CAF.[2]
The 900 series, intended as a replacement of the 200 series, entered service in 2011.[3] Starting in late 2017, the last 200 series units were retired from active service, with the trains being put up for auction in January 2018.[4] On 24 November 2018, the last remaining unit was retired after a farewell trip, the train was then sent to the Basque Railway Museum for preservation.[5]
Originally, each trainset was formed by two motored cars and two non-powered cars. Between 1996 and 2000 all units had a fourth (non-powered) car added.[2]
^Olaizola Elordi, Juanjo (2020). Línea 3, eslabón clave(PDF) (in Spanish). Servicio Central de Publicaciones del Gobierno Vasco. p. 208. Retrieved 29 May 2022.