fuse type isolating switch HR17

HR17 series fuse type isolating switch, rated insulating voltage AC 800V , rated operating voltage 690V .400V, rated frequency 50Hz , the rated current 160A-630A mainly used as power switch , isolating switch and emergency switch with function of protection in the circuit with high short circuit current and motor circuit, this switch is not used to operate the single motor. When isolator with isolating knife replace fuse, this switch does not have the electric to overload with short-circuits the protection function , only satisfies the rating which this switch stipulated to put through with the minute breaks the ability , makes the line to isolate uses. This product is in conformity with standard GB14048.3-2002, IEC947-3(1999), 3C