Indian locomotive class WAG-12

WAG-12B
Saharanpur based WAG-12B at Bharatnagar.
Type and origin Power type Electric Designer Alstom, RDSO Builder ELF Madhepura Model RDSO based design[1] Build date 2017 (2017)-present Total produced 450 as of September 2024
Specifications Configuration: ​  • AAR B-B+B-B  • UIC Bo′Bo′+Bo′Bo′  • Commonwealth Bo-Bo+Bo-Bo Gauge 5 ft 6 in (1,676 mm) Broad Gauge Wheel diameter 1,250 mm (4 ft 1 in) Wheelbase: ​  • Bogie 2,600 mm (8 ft 6 in) Pivot centres 10,200 mm (33 ft 6 in) Panto shoes 9,000 mm (29 ft 6 in) Length: ​  • Over couplers 38,400 mm (126 ft 0 in) Width 3,215 mm (10 ft 7 in) Height: ​  • Pantograph 4,245 mm (13 ft 11 in) Axle load 22.5t (upgradable to 25t) Loco weight 180t (upgradable to 200t) Electric system/s 25 kV 50 Hz AC AC Current pickup(s) Pantograph OHE Traction motors 6FRA-4576D, Asynchronous, Forced Cooled, Nose Suspended ​  • Continuous 1125 kW @ 1750 rpm Gear ratio 110:23 MU working 2 units Loco brake Air, Regenerative[2] Train brakes Air Couplers CBC coupler, Buffers and chain coupler
Performance figures Maximum speed 100 km/h (62 mph) (Upgradable to 120 Km/h) Power output: ​  • Continuous 9,000 kW (12,000 hp) Tractive effort: ​  • Starting 705 kN (158,490 lbf) (Upgradable to 785 kN) Brakeforce 634.5 kN (142,641 lbf)
Career Operators Indian Railways Numbers 60001+ onwards Locale India Delivered 11 October 2017 First run 19 May 2020

The Indian locomotive class WAG-12B is a class of 25 kV AC electric locomotives that was developed in 2017 by Alstom with technological collaboration with Indian Railways. The model name stands for wide gauge (W), alternating current (A), goods traffic (G) locomotive-12. They entered trial service in 2019. A total of 450 WAG-12B have been built at Electric Locomotive Factory, Madhepura, Bihar, India.

With a power output of 12,000 hp, the WAG 12 is twice as powerful as its immediate predecessor, WAG-9, making it one of the most powerful freight locomotives in the world. The locomotive is being developed for deployment on the Dedicated Freight Corridors, where it will be used to haul freight trains weighing more than 6,000 tonnes (5,900 long tons; 6,600 short tons) at speeds of 100 km/h (62 mph) to 120 km/h (75 mph), doubling the average speed of freight trains in the sector.