VEX type Vacuum Circuit Breaker is new type VCB product and processed by the technology of epoxy resin embedded pole. The width of VEX is only 240mm with the three phase poles column arrangement, and suitable for substation, RMU network, and many kinds of switchgear. Completed interlock functions, VEX can ensure the safety of the operators and equipments, both from mechanic and electric. Otherwise, it’s maintenance free.