(1)According to the contactor is control object, the number of operation and the use category, the contactor of the corresponding category is selected.(2)Select the rated voltage of the line at the position of use. (1) The protection characteristics of the fuse and the overload ability of the object to be protected should be matched so that the protected object can be reliably protected in the whole range. 
Shanxi Aissmy Electric Technology Co., Ltd is located in the Shanxi National High-tech Pioneer Park. The company is a high-tech enterprise that specialized in the research, development, manufacturing and sales of new energy-saving high and low voltage electrical products and accessories such as intelligent permanent magnet AC contactors and owns the proprietary intellectual property rights. By adhering to the company philosophy "Make innovatively and intelligently, keep moving", the company focuses on the scientific and technological innovation as always, forms the integrative development pattern of scientific research, .......
ADD：Economic & Technology Development zone,Yangquan,Shanxi,China. Record number: Jin ICP, number 16006010 Technical support：longcai0353