Class 4000
CFL loco 4015 in Luxembourg station, 2 June 2007.
Type and origin Power type Electric Builder Bombardier Build date 2004–2005 Total produced 20
Specifications Configuration: ​  • AAR B-B  • UIC Bo′Bo′ Gauge 1,435 mm (4 ft 8+1⁄2 in) Length 18.9 m (62 ft 0 in) Axle load 21 tonnes (21 long tons; 23 short tons) Loco weight 84 tonnes (83 long tons; 93 short tons) Electric system/s 25 kV 50 Hz AC 15 kV  16.7 Hz AC Current pickup(s) Pantograph
Performance figures Maximum speed 140 km/h (87 mph) Power output 5,600 kW (7,500 hp)
Career Operators CFL Class 4000 Number in class 20 Numbers 4001–4020 Official name TRAXX Locale Luxembourg Delivered 2004-2005 Disposition in service

The CFL class 4000 is a variant of the Bombardier TRAXX locos found working across Europe. Within Luxembourg they work on the local passenger services (crossing the borders into France or Belgium as necessary. They also work freight traffic. Their 15 kV capability allows them to work across the border to Germany. Even though they are capable of running in France, they are not allowed to do so for security reasons.^{[clarification needed]}

Their slab sided body work has been used for advertising.

• Rail.lu page
• D'Serie 4000 op dem Site vum CFL
• Spoorgroep Luxemburg