HPS/MH:35W,50W,70W,100W,150W,200W,250W,320W,400W,575W,600W,750W,1000W,1500W both voltage ... function UL and CE HID MH Digital Electronic Ballast for 250W Metal Halide Lamp Voltage input range: 108Vac~305Vac Rating ... : >0.99 Efficiency: 95 %( Max) THD: <10% Output power: 250W Current crest factor: <1.7 Output frequency: 100Hz Protection of ... and regulation: IEC61347 EMC: EN55015 HID Ballast - New (MH-250W)