supply of feeder-1&2 and bus coupler powerfeeder-1&2 and bus coupler power,feeder-1&2 and bus coupler power contactors,3 pole,1000 v ac,50 hz,suitable for 500kva ,7 50 v ac onload switching under ac-6a category at temperature of 70? & coil voltage of 110 v+ 25%-30% d c with surge suppressor ,2 no+2 nc similar to make :-abb model no.af1250-30-11 or l&t (mvo 820) or si emens (3tf69338) for lslrd coaches as per rdso specification no.rdso/pe/spec/tl/0195-2019 (rev.-0).. (warranty period : upto 30 months from the date of delivery.) note: this item should be procured from oem /authorized dealer only to quote with documentary evidence. [ warranty period: 30 months after the date of delivery ] ]