It can be used in the distribution circuit of high short-circuit current and the motor circuit, serving for power switch, isolating switch and emergency switch as well as circuit protector. Generally, it cannot be directly used for switching of single motor and shall be used indoors. 

Structural features: 
1) Composed of four parts: base (with contact), upper and lower electric shock shields,
    switch cover (with fuse body)
2) Both mounting base and switch cover are made of plastic and designed with electric 
   shock shield
3) Compact structure, light weight, reliable operation, safe and easy installation, and 
    good appearance 

Specifications:
1) Rated frequency: 50Hz (or 60Hz)
2) Rated insulation voltage: 800V
3) Rated working voltage: up to 690V
4) Rated working current: up to 630A