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German Reichsbahn E 251
later class 251 and DB AG class 171
Germany | 1965 | 15 produced
251 014 with a lime train and another, pushing 251 in February 1990 near Hüttenrode
251 014 with a lime train and another, pushing 251 in February 1990 near Hüttenrode
Werner & Hansjörg Brutzer

The E 251, from 1970 class 251 or class 171 at Deutsche Bahn, was an electric locomotive that was specially developed for the Rübelandbahn in Saxony-Anhalt. Although the route had already been rebuilt in the 1930s, the slopes of the Harz Mountains still required gradients of up to six percent. Finally, in the 1960s, due to the increasingly heavy lime and ore trains, it was decided that the line should be electrified. In contrast to the remaining routes in Germany, this was done in the system with 25.000 Volts and 50 Hz, which led to the development of the E 251.

Based on the DR electric locomotives E 11 and E 42, this resulted in a more powerful, six-axle design whose systems were designed for the special power system. Since the route did not allow high speeds, the speed was reduced to 80 km/h. This further increased the tractive power and now also made a cheaper drive with nose-suspended motors possible. In addition, the tighter curves on the Rübelandbahn were taken into account with a special design of the chassis. Now it was possible to pull freight trains of 600 tonnes up the steep inclines, each with a train engine and a pusher engine. The total of 15 locomotives that were built proved themselves on this route and still pulled both freight and passenger trains in the days of the Deutsche Bahn. However, the latter fell away in 2000 due to new regulations on automatic door controls, until the class finally had to hand over its service in front of freight trains to modern multi-system locomotives in 2004.

General
Built1965
ManufacturerLEW Hennigsdorf
Axle configC-C 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length61 ft 1 7/8 in
Service weight273,373 lbs
Adhesive weight273,373 lbs
Axle load45,636 lbs
Power
Power sourceelectric - AC
Electric system25,000 V 50 Hz
Hourly power4,908 hp (3,660 kW)
Continuous power4,425 hp (3,300 kW)
Top speed50 mph
Starting effort83,854 lbf
Power Plant
Boiler
Calculated Values
electric locomotive
passenger
freight
last changed: 02/2022
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