These locomotives have entered the Western Railway zone of Mumbai. The first 22 units were imported from ABB. Of these, the first six were fully assembled and rest were in kit form. CLW started producing of WAG-9 traction motors on 1 November 1999. The units built by ABB have pantographs with two end horns while the CLW built units have pantographs with single end horns which are common in India. This class had a capacity to MU several units, but IR restricts them to two, because of dynamic loading restriction on most bridges. Regenerative brakes provide about 260 kN of braking effort.