supply of hog a & b main power contactors, 3pole, 1000v ac, 50hzhog a & b main power contactors, 3pole, 1000v ac, 50hz,hog a & b main power contactors, 3pole, 1000v ac, 50hz, suitable for 500kva, 750 v ac onload switching under ac-6a category at temperature of 70 degree c & coil voltage of 415v+ 10%- 20% ac with surge suppressor, 4no+4nc, as per rdso spec no. rdso/pe/spec/d/tl/01 95-2019 (rev.-0) suitable for switchboard cabinet for hog compliant lslrd coaches.make-abb af1250, l&t mvo 820 , siemens 3tf69448 cq7z a02 only. firm should submit test report & certificate of authorization from oem [ warranty period: 30 months after the date of delivery ] ]