Specifications: 1) Electrical isolation between chips and substrate, 2500V AC 2) International standard encapsulation 3) Full press-fit construction, superior temperature characteristics and power circulation capability 4) Air-cooling for all modules 400A below, both air-cooling and water-cooling for modules 500A above 5) Simple assemble, easy to use and maintain 6) Small size, light weight 7) For use on: a) DC power for instruments b) Industrial heating controlling c) Various rectifying power supply d) Light change e) Non-touch switch f) Soft-starters for electric machines g) Static compensation of zero power h) Arc welders i) Frequency converters j) UPS power supply k) Charging and dis-charging of battery Outer packing: Standard export cartons