... power plant, petroleum, chemical, metallurgical, textile and skyscraper. XL-21 power distribution box is as the power, power distribution, motor ... distribution and control. There is two types of XL-21 power distribution box. The height is 1700mm and 1800mm for ... 630ARated short-time withstand current: 30kAProtection grade of shell : IP30XL-21 distribution box with steel frame. If you are interested in ...