... ) Dimmable:3 phase at 50%, 75%, 100% 4) HPS/MH ballast Suitable for HPS/MH bulb of America and Europe standardInput voltage ... , FCC, UL, CUL, ROHS are approved Type No.NB-HPS/MH1000WNB-HPS/MH600WNB-HPS/MH400WNB-HPS/MH250WFanNONONONOOutput power1000W600W400W250WBallast Size370*179*106mm340*153.5*87.9mm240 ... *120mmUS/600V 16AWG*120mmUS/600V 16AWG*120mmUS/600V 16AWG*120mm HPS/ MH digital ballast 600W