The Nederlandse Spoorwegen (NS) Class 1200 was a class of electric locomotives that were in service from 1951 until 1998. They were designed by Baldwin and built by Werkspoor (Utrecht) between 1951 and 1953. The electrical equipment was built by N.V. Heemaf (Hengelo) to a design by Westinghouse. Some parts (the bogies, and the electrical installation) were made in the United States as part of the Marshall Plan.
Originally 75 locomotives were ordered, but the order was reduced to 25 locomotives and more locomotives of the French Class 1100 locomotives were ordered instead.
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The 1200 class was retired by the NS in 1998. Locomotives 1201, 1202 and 1211 were obtained for preservation by the Stichting Klassieke Locomotieven group (1201) and the Dutch Railway Museum (1202 and 1211). A further five locomotives, numbers 1214, 1215, 1218, 1221 and 1225, were bought by the Dutch freight operator ACTS Nederland BV in 1999 and were renumbered to 1251–1255.
ACTS Nederland BV continued to use its five 1200 class locomotives in freight and charter service until 2010. Locomotive 1253 was taken out of service in 2003 and was used as a parts donor, while locomotive 1252 was taken out of service in 2007. The remaining three locomotives were withdrawn in 2009-10 by ACTS and all except parts donor 1253 were sold to Euro-Express-Treincharter BV (EETC).
As of January 2011 engines 1251 and 1252 had been returned to working order by EETC whilst engine 1254 was being overhauled. The two operational locomotives were being used to haul the empty Citynightline train from Munich and Zurich and Euronight Jan Kiepura train from Moscow, Minsk, Warsaw, Prague and Copenhagen between Amsterdam Centraal railway station and Watergraafsmeer. They are also used on charter trains and transporting carriages to and from the EETC workshop in Rotterdam.
The eight surviving 1200s in Amersfoort, November 2011.
On 12 November 2011, all eight existing engines were brought together in Amersfoort for a railway enthusiast event to celebrate 60 years since the 1200 class entered service. The display was organized by the NVBS (Nederlandse Vereniging van Belangstellenden in het Spoor- en tramwegwezen), the Dutch national railway enthusiasts' body which was celebrating its 80th anniversary.
In 2014 locomotive 1252 was repainted to celebrate 175 years of railways in the Netherlands. As part of this, the locomotive was decorated with a promotional slogan by Märklin "The original must be Märklin - Märklin congratulates the Netherlands on 175 years of railways" in Dutch on one side of the locomotive body and German on the other. The locomotive was offered as a one-time series HO scale model by Märklin as item No. 37128 in 2014.