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