supply of changeover switch of 3-phase, 4-pole, 40 amps for roof mounted cab ac of wag9 electric locomotiveschangeover switch of 3-phase, 4-pole, 40 amps for roof mounted cab ac of wag9 electric locomotives,changeover switch of 3-phase, 4-pole, 40 amps for roof mounted cab ac of wag9 elec tric locomotives make: c&s or havells or equivalent as per rdso specification no. rdso/2007/el/spe c/00 55 rev.2 or latest. note: 1) item should be suitable for 2t capacity roof mounted cab ac fitted on electric locomotives. 2) one sample to be got approved before effecting bulk supply. [ warranty per iod: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]