DB Class 120

The DB Baureihe 120 is a class of electric locomotives operated by DB Fernverkehr in Germany. From 5 July 2020, almost all locomotives (except for one from the 120.2 subseries) have been withdrawn.

Deutsche Bundesbahn Baureihe 120
120 105-2 with an InterCity from Berlin to Cologne, 2013.
Type and origin
Power typeElectric
BuilderBBC, Henschel, Krauss-Maffei, Krupp
Build date1979–1980 (120.0)
1987–1989 (120.1)
Total produced65
Specifications
Configuration:
​
 • UICBo′Bo′
Gauge1,435 mm (4 ft 8 1⁄2 in) standard gauge
Length19.20 m (63 ft 0 in)
Loco weight84.0 t (82.7 long tons; 92.6 short tons)
Electric system/s15 kV 16⅔ Hz AC Catenary
Current pickup(s)Pantograph
Traction motorsFour
Loco brakeKE-GPR, electric brakes
Train brakesAir
Safety systemsSifa, Indusi
Performance figures
Maximum speed200 km/h (124 mph)
Power output5,600 kW (7,500 hp)
Tractive effort340 kN (76,000 lbf) Max
215 kN (48,000 lbf) @92.6 km/h (58 mph)
Career
OperatorsDeutsche Bundesbahn
Deutsche Bahn AG
Class120
Withdrawn2011 - present
DispositionStill in active service

Background and design

The locomotives' prototypes, delivered in 1979 (Mark 120.0), were one of the first electric locomotives with three-phase motors. They were based on experiences made in the 1970s with diesel-electric test platforms (Mark DE 2500/ DB Mark 202). In Norway, a new four-axle Locomotive, Mark El-17, was launched during 1983 with top speeds up to 93 miles per hour (150 km/h).

The design was intended to be the first truly universal locomotive, capable of pulling fast passenger trains as well as heavy freight trains. While the electric equipment exceeded expectations, the mechanical part suffered from its lightweight construction necessitated by the heavy electronics of the time.

After extensive tests, a series of 60 locomotives (Mark 120.1) were ordered in 1984 and delivered in 1986–1988. Original plans to build up to 2,000 machines were ultimately ended by DB's privatisation. The 120s went to DB Fernverkehr, the other divisions of Deutsche Bahn ordered locomotives that featured technologies from the 120, but were not direct successors.

Technical data 120
Sortable table
120.0 120.1
General
OperatorDB=>
Manufacturing year1979-19xx1986–1988
Number of manuf.560
Supplier mechanical partHenschel, Krauss Maffei, Krupp=>
Supplier electrical partBBC, Siemens, AEG=>
Axle arrBo-Bo=>
Weight84.0 t (82.7 long tons; 92.6 short tons)=>
Axle load21.0 t (20.7 long tons; 23.1 short tons)=>
Max tractive eff340 kN (76,000 lbf)340 kN (76,000 lbf)
Max speed280 km/h (170 mph)200 km/h (120 mph)
Body
Length19,200 mm (63 ft 0 in)=>
Bogie distance10,200 mm (33 ft 6 in)=>
Height over pantograph4,375 mm (14 ft 4.2 in)=>
Body width3,000 mm (9 ft 10 in)=>
Couplingbuffers and chain=>
Surfacesmooth steel sheet=>
Colourwine-red beigered, white
Bogies
Track width1,435 mm (4 ft 8 1⁄2 in) standard gauge=>
Wheel base2,800 mm (9 ft 2 in)=>
Wheel diameter, new1,250 mm (49.21 in)=>
Primary suspensioncoil=>
Secondary suspensioncoil=>
Brakeshoe, rheostatic, regenerativeshoe, regenerative
Bogie Weight15.96 t (15.71 long tons; 17.59 short tons)=>
Min hor radius100 m (328 ft)=>
Electrical equipment
Catenary voltage15 kV=>
Catenary frequency16​2⁄3 Hz=>
Max cont power4.4 MW (5,900 hp)=>
Traction motorQD646BQg 4843
Max power trainheating900 kW (1,200 hp)=>
  • 120 143 in Dresden
  • 120 002 in Würzburg 1984
  • DB-AG BR 120 (DB Systemtechnik), Summer 2006 in Dresden Main Station
  • 120 134 arrives at Köln Hbf
  • 120 502 leaves Köln Hbf on a Bahntechnik train.


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