It is suitable for the three-phase AC 50 Hz, rated voltage of 3.3, 7.2, 12 KV indoor high-voltage power distribution equipment. Widely used in industrial and civil cable ring network and terminal power supply, suitable for urban residential area, small secondary substations, open and close house, industrial and mining enterprises, shopping malls, airport, subway, small and medium-sized power plants, hospitals, stadiums, railway, tunnel, etc in circuit system for receiving and distribution of electrical energy, it has simple structure, flexible operation, easy installation, reliable interlock etc.
• The vacuum circuit breaker is built-in, adopting vacuum arc extinguish chamber, with free maintenance, long service life. The number of operations can reach 10,000 times
• Also the load switch or the fuse can be built-in according to users' requirements
• Adopting advanced scientific design, it has simple structure and complete protection functions
• With interlocking device, it has 5 prevent the load from isolating and closing the disconnecting switch, prevent the breaker or the load switch from incorrect isolating and closing, prevent the earth switch from power on when it is in closed position, prevent the earth switch from closing with electricity, prevent entering the charged compartment
• The upper and the lower disconnecting switches are provided with a double fracture of the rotation disconnecting switch
• Rotational isolated switch with double fracture was used for the up and dow isolation switch The shell protection grade: IP40, when the door opens: IP20.