... . 3) Low raise temperature. 4) Low power consumption. 400w magnetic ballast for metal halide lamp and sodium lamp CodeWattLamp typeCurrent(A)VoltageP ... ,125W,150W,250W,400W,600W,1000W,2000W.Electromagnetic ballasts for HID lamps.For HS:(high-pressure sodium) discharge lamp; MH:(high-pressure ... wire,silicon steel sheet.10) TW:13011) Certificate: CE. 400w ballast magnetic ballast for metal halide lamp