Magnetic ballast for high pressure sodium lamp, metal halide lamp & mercury lamp 35W-1000W Magnetic ballast for high pressure discharge lampVoltage: 220-240VFrequency: 50/60HzPower: 35W, 50W, 70W, 80W, 100W, 125W, 150W, 250W, 400W, 600W, 1000W All of the silicon steel sheets used for electromagentic ballasts are of extra good quality and made under high speed press. The products are painted in ...