XL-21 型动力配电柜

XL-21 系列动力配电箱适合于工业与民用建筑中交流频率为50Hz电压500V以下，三相四线电力系统的动力配电和照明配电用。

XL - 21 power distribution cabinet

XL - 21 series power distribution box is suitable for industrial and civil buildings under the frequency of 50 hz ac voltage 500 v, three-phase four-wire power system of power distribution and lighting distribution.