series fuse combination switches

QGLR(HGLR)series fuse combination switches (hereinatter callde as switch for short)is a kind of multi-poles hand-operated switch. Adopting the shell made of unsaturated polyester resin reinforced with glass-fibres,having very high dielectric performance,protective capability and safe operation. 

The operating device is an elastic-accumulating and acceleating instant-release device,which makes instant making and breeking of the double gap contact .It has no relationship with the operation handle and thus greatly increase both the various electrcal and mechanical performance.

The fuse combination switches can assure the circuit to be turnde making and breaking under load,having reliable breaking protection against over-current or short circuit apparent visible the off state.

Having strong humidiy and resistant properties.

The switch has an artistic,novel,succinct,small-sized outline,but has various functions,being the best choice among the congeneric products. 

series fuse type Isolating switch

HR7 series fuse type isolating switch ,rated insulating voltage AC800V,rated operaing voltage 690V,400V,rated frequency 50Hz,the rated current 160A-630A mainly used as power switch,isolating switch and emergancy switch with function in the circuit with high short circuit current and motor circuit,this switch is not used to operate the single motor.

When isolator with isolation knife replace fuse,this swich does not have the electric circuit to overload with short-circuits the protecction function ,only satisfies the rating which this switch stipulate to put through with the minute breaks the ablility,makes the line to isolate uses.

This prouduct is incoformlty with standard GB 14048.3-2001,IEC947-3(1999).