The Lumina Power part number PS-ML5000 is a mercury lamp switching power supply (or lamp ballast) is designed for the OEM customer and provides a precise constant power output that will track the varying impedance of the mercury lamp for stable light output, and is combined with Lumina Power??s ??Short Pulse?? igniter. This item has a maximum power output of 5000W, a maximum current output of 170 Amps, powering lamps with 15 to 150 volts of power, or an input voltage of 200-440 VAC. It's dimensions in inches are: 17.3??x16.6??x4.3??. Key features providing economical performance over life include the precision current regulation for long-term lamp stability, very low ripple for best lamp optical performance, an 45KV remotely mounted lamp igniter for reliable starts. This unit offers long term, high power operation in an economical, compact package. It is ideal for medical, projection and industrial applications where a stable light source is essential.