ZGS13-GF-10 has the advantages of fireproof, moisture-proof, safe and reliable, energy saving and convenient maintenance. It is suitable for communicating 50-60hz, input, and output voltage of no more than 500V of various three-phase power supply occasions. It has the characteristics of low noise, high reliability, environmental protection and versatility. It is widely used in metro, high-rise buildings, stations, wharves, industrial and mining enterprises, the transmission and distribution of tunnels, and the use of imported equipment.