supply of feeder 1 & 2 and bus coupler power contactorsfeeder 1 & 2 and bus coupler power contactors,feeder 1 & 2 and bus coupler power contactors , 3 pole , 1000 v ac , 50 hz suitable for 500 kva , 750 v ac on load switching under ac-6a category at temperature of 70 degree celsius & coil volta ge of 110 v+ 25%- 30% dc with surge suppressor , 2 no+2 nc similar to the part no : af1250-30-11 of m/ s abb as per rdso specification no : rdso/pe/spec/tl/0195-2019 (rev.-0) or latest suitable for switch bo ard cabinet for hog compliant lslrd coaches , make- abb , siemens , l&t or similar. [ warranty period : 30 months after the date of delivery ] ]