supply of feeders 1&2 and bus coupler, power contactorsfeeders 1&2 and bus coupler, power contactors,feeders 1&2 and bus coupler, power contactors, 3 pole, 1000v ac, 50hz, suitable for 500kva, 750v ac onload switching under ac-6a category at temoerature of 70 degree c & coil voltage of 110v dc + 25%-30% with surge suppressor, 2no+2nc, as per rdso spec no. rds o/pe/spec/d/tl/0195-2019(rev-0) or latest. suitable for switch board cabinet for hog complaint lslrd coaches. make (as per rdso spec, bill of material)-abb (model no.af1250-30-11), l&t (model no. mvo 820), siemens (model no. 3tf69338df4z a02+3tx75723h) [ warranty period: 30 months after the date of delivery ] ]