Pull the load with drop-out fuse, comes elastic auxiliary contacts and arc chute for division and rated load current. Use and implementation of standards This product is used in 10 ~ 35kV distribution lines branch lines and distribution transformer primary side for overload and short circuit protection, division and rated load current. The product model by JB/T8321-1996 "AC high voltage fuses Model methodology" requirement for the preparation, conditions of use Altitude: 2000m the following; Ambient temperature: -40 ℃ ~ +80 ℃; Humidity: less than 90% ; Earthquake intensity: 7 degrees and below; environmental media: non-corrosive and explosive gases and dust.