1、The shell frame is of high grade,high breaking capacity,and strong adaptability of accessories.
2、The wiring column has the advantage of higher safety.
3、Current-limiting contact system,magnetic blown arc extinguishing device,aviod products and equipment to withstand large short-circuit current,improve product arc extinguishing Ability to ensure the improvement to breaking capacity.
4、The shell and function keys are made of imported PA nylon with high flame retardent,high temperature resistance.
5、Its shall is novel,its struction is reasonable,and it has many patent protection
