HR17 Series Switch is rated frequency is 50 Hz (or 60 Hz), rated insulation voltage 800V, rated working voltage up to 690V, and rated working current up to 630A . 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.