magnetic ballast 250W,400W ballast, VS style EN60922 EN60923 Magnetic ... lamp 250W magnetic ballast,400W ballastVS style Magnetic ballast for HID 220V/50HzMagnetic ballast,used for high-pressure sodium lamps(SVB) and metal halide ... lamps(HM),high-pressure sodium lamps(HS)and metal halide lamps(MH).Mains Voltage:220V,230V,240VMains Frequency: ... 50700.63.21.96264/0.004/17 metal halide magnetic 250W ballast