Rahul Sharma (Editor)

ADtranz DE AC33C

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Power type  Diesel-electric
Model  DE-AC33C
UIC class  Co'Co'
Designer  Adtranz / GE
Build date  1996–2004
ADtranz DE-AC33C
Total produced  Pakistan: 30 Malaysia: 20 Germany: 11 Total: 61

The Blue Tiger (manufacturer designation: DE-AC33C) is a type of high powered diesel-electric locomotive developed by ADtranz in association with General Electric.


History and design

The prototype was unveiled in 1996.

Initially the axle load was expected to be a light 18 tonnes (17.7 long tons; 19.8 short tons) and the power at ~2,500 kW (3,400 hp). In practice, the German locomotives had an axle load of 21 tonnes (20.7 long tons; 23.1 short tons) (which is normal for this type of diesel locomotive).

General Electric supplied diesel engines and electrical transmission system (which used IGBT-based inverters driving AC traction motors). The rest of the locomotive was built by AdTranz in Kassel.

For the Pakistani export models a 16-cylinder engine was used.

Bombardier took over AdTranz in 2001, subsequently the Blue Tiger locomotive was shown at InnoTrans in 2002 with a view to European orders. The German production models had a mass of 126 tonnes (124.0 long tons; 138.9 short tons) (axle load 21 tonnes or 20.7 long tons or 23.1 short tons) and an engine power of 2,430 kW (3,260 hp).

As of 2009, the class is no longer listed as a production model by Bombardier; GE lists also lists the family as a former production type. For the European market, Bombardier produces the less powerful diesel variants of the TRAXX family, whilst GE offers variants of its Evolution series for export.


The first orders for the locomotives came from Pakistan Railways in the late 1990s. The locomotives were being built to a gauge of 1,676 mm (5 ft 6 in) and powered by a 16-cylinder engine of 3,300 horsepower (2,500 kW) instead of the 12-cylinder engine used in the prototype and other production models. The first ten were shipped out, the remainder assembled under license in Pakistan. Pakistan Locomotive Series Start From 6001 to 6030. Specifications;. 1.Class of Locomotive {Age30} 2.Locomotive Model {DE-DC33-CA} 3.Locomotive in number {30} 4.Locomotive Grouping {6001 to 6030} 5.Manufacturer of Locomotive {ADTRANZ, GDR & PR Locomotive Factory, Risalpur} 6.Date of 1st Locomotive in Service {September 1996} 7.Length of Locomotive {58'-4"} 8.Number of Wheels {12} 9.Number of Traction Motors {6} 10.Speed of the Locomotive (Km/h) {122(Km/h)} 11.Weight of Locomotive in working Time {103Tones} 12.Axle load {17.5} 13.Model of diesel engine {GE-7FDL 16(B-11)} 14.Diesel Engine manufacturer {GENERAL ELECTRIC USA} 15.Diesel Engine Horsepower {3300} 16.Fuel Capacity {1600 Imp. gallons} 17.Max. Tractive Effort {68000 lbs}.


Twenty locomotives were built to 1,000 mm (3 ft 3 38 in) gauge in 2003–2004 for KTM. They were designated as "Class 26" (Numbers: 26101 – 26120).

All the locomotives were named after capes in Malaysia. In the first decade of operations the locomotives proved more reliable than the Malaysian Class 29 locomotives bought at around the same time.


10 Locomotives were built to 1,435 mm (4 ft 8 12 in) gauge with a view to leasing or orders.

Various companies have used the locomotives. Initially Karsdorfer Eisenbahngesellschaft GmbH (KEG) was to use 8 units, but went bankrupt in 2005. In 2006, the distribution was:

  • Osthannoversche Eisenbahnen (5 units including the prototype)
  • ITL Eisenbahngesellschaft (Import Transport Logistik) (2 units)
  • Havelländische Eisenbahnen AG (4 units)
  • Models

    A working scale model of this locomotive has been produced by the Slovenian company Mehano in N, TT and HO scale.


    ADtranz DE-AC33C Wikipedia

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