Main characteristic 1,The circuit breaker for the console-model handcart structure, uses the explosion chamber in on, the organization in the under integral-type layout, is advantageous for the debugging. 2, Use the air and the organic material compound insulation structure, the design compact, the weight is light. 3,Match American Cuter-Hammer Corporation the vacuum explosion chamber and the domestically produced vacuum explosion chamber, its explosion chamber uses the vertical magnetic field extinguishing of arc, lowly dams the current. 4, The simple spring operating mechanism, 10,000 operations exempts the maintenance. 5th, the guide screw advances the organization, reduces effort, steadily, the self-locking is good