... raise temperature. 4) Low power consumption. 400w magnetic ballast for metal halide lamp and sodium lamp CodeWattLamp typeCurrent(A)VoltageP ... 4.6220-240V/50Hz0.4232/50Detailed Product Description.Electromagnetic ballasts for metal halide lamp,sodium lamp,mercury lamp 35W,70W, ... 125W,150W,250W,400W,600W,1000W,2000W.Electromagnetic ballasts for HID lamps.For HS:(high-pressure sodium) discharge lamp; MH:( ...