1.Certification:ISO9001:2000 2.Material:Steel with zinc plating 3.Standard parts 4.Usage: For Vacuum Circuit Breaker Circuit Breaker Handcart has perfect and reliable interlock function. When it combines with mid-located unit and coordinate with EK6 switch, it can meet the requirements of Five-Pretecting Interlocker in GB 3906 standard, the detail effect of handcart interlock as follow:1.In ...