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{{As of|2006}}, Indian railways haul 80% of freight and 85% of passenger traffic with electric locomotives. Early 2800 hp SNCF design for 25 kV AC, with ignitron rectifiers. Introduced in 1959, they were mostly deployed by ER in the Howrah-Asansol-Dhanbad-Mughalsarai section. They were less frequently found 'upstream' in the Delhi-Kanpur-Mughalsarai section and in the Igatpuri-Bhusaval section of the Central Railway. They were mostly used for non-express passenger trains but some were used double-headed for freight service. Some were still [12/98] in operation on ER (Sealdah-Lalgola passenger etc.).
WAM-1 locomotives are significant in the history of electric traction in India as they were among the first AC electrics to run in India. Like the WAG-1s, some of their advanced features turned out to be unsuitable for Indian conditions. Manufactured by Kraus-Maffei, Krupp, SFAC, La Brugeoise & Nivelle (50 cycles European group), ignitron rectifiers feed four DC traction motors that accept pulsating current input. Motors are connected to the axles by a Jacquemin drive. Speed control is by tap-changer on the input transformer (motors permanently wired in parallel). The superstructure is mounted on bogies with pendular suspension and equalizer beams.for many years thereafter WAM-4 was the workhorse of Indian railways. It was used both for passenger and goods traffic. Later WAG (latest being WAG9- not very efficient, though on uphill gradients) series started being increasingly used for goods trains and WAP (latest being WAP7 used mainly for Rajdhani/Shatabdi
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