supply of hog a & b main power contactors , hog a & b main power contactors, 3 pole, 1000v ac, 50 hz, suitable for 500 kva, 750 v ac on load switching under ac-6a category at temperature of 70 degree c & coil voltage of 415v ac + 10%- 2 0% with surge suppressor, 2no+2nc confirming to rdso spec no rdso/ pe/ spec/ d/ tl/ 0195- 2019 (rev. -0) suitable for switch board cabinet for hog compliant lslrd coaches. material is abb part no. af1250-30- 11 or l &t part no. mov 820 or siemens part no. 3tf69448 cq7z a02 only. material procures from said oe m or his authorized dealers with tender specific authorization only. [ warranty period: 30 months after th e date of delivery ] ]