2. 2. Ambient temperature: -25°C～＋40 °C；
3. Relative humidity: daily average≤95%, monthly average ≤90%;
4. Earthquake intensity：≤8 degree;
5. Applicable occasions should free from inflammables, explosives Corrosives and severe vibration
GN30-12M series rotary indoor high voltage disconnect switch is a new type of touch rotating knife type disconnect switch,
the main structure in three phase chassis of the upper and lower two plat,
fixed two set of insulato rand contact, by rotatirlg contactor,realize the divide and combine the switch.