Indian locomotive class WAP-4

Common card · No. 332432

The Indian locomotive class WAP-4 is a class of 25 kV AC electric locomotives that was developed in 1993 by Chittaranjan Locomotive Works for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Passenger traffic (P) locomotive, 4th generation (4). They entered service in late 1994. A total of 778 WAP-4 were built at CLW between 1993 and 2015, which made them the most numerous class of mainline electric passenger locomotive until the introduction of WAP-7 in 2000. The WAP-4 is one of the most successful locomotives of Indian Railways serving passenger trains for over 29 years. This class provided the basic design for other locomotives like the WAP-6. Despite the introduction of more modern types of locomotives like WAP-7, a significant number are still in use, both in mainline duties. Production of this class was halted in December 2015 with locomotive number 25051 being the last unit to be rolled out. As of November 2025, all locomotives except those lost in accidents...

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