1.The optimization of the structure of the layout design makes the operability of the product more accord with human body engineering principle,manipulation of the performance;

2.The chassis electrostatic pensu and 80%mechanism parts plating ni-p alloy surface treatment technology,the use of the product appearance quality and excellentinternal quality is the same;

3.The use of secondary trip mechanism make the product switch trip operation work fell dramatically,closing is more reliable;

4.The use of secondary spur gear transmission energy storage structure make energy storage is more stable, more compact structure.

5.Circuit breaker through two retrofit design,making the width of the box reduced by 59%on the basis of the WS-12.