Load switch and the combination of electrical isolation from the main switch box combiner limiting fuse isolating switch on the vacuum switch grounding switch spring operating mechanism and so how to choose the model of load switch? 1. The rated voltage of the switch must not be less than the system voltage. 2. The switch current rating must not be less than the actual current line. 3. Switch closing current must not be less than the short circuit current at the installation location. Zibo, Weifang load switch load switch, load switch, the power provided by the Xi'an Huayi Huayi power plant. Xian Huayi power plant (www.xahy.com) strong, credible, in Xi'an high-voltage circuit breakers and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi power and you hand into the brilliant, for a better future!