... /50HzMagnetic ballast,used for high-pressure sodium lamps(SVB) and metal halide vapour lamps(MHB) and high-pressure mercury lamps(MVB).Vacuum ... mercury vapour lamps(HM),high-pressure sodium lamps(HS)and metal halide lamps(MH).Mains Voltage:220V,230V,240VMains Frequency:50,60Hz ... /17E03A400MH,HM3.26220,50700.63.21.96264/0.004/17 metal halide magnetic 250W ballast