high quality  waterproof lifting self-lock and normal on button control switch box XCD-63A

1. Operational temperation:-5°c - +40°c  the average value less than +35°c  in 24 hours
2. Altitude: less than 2000m
3. Atmosphere condition : when the maximum temperature is +40 °c ,the  Operational humidity is less than 50%,allow higher humidity  in cooler environments.
4. Pollution degree:3 level
5. Installs Category: II
6. No significant Shaking,no impact vibration and no snow or rain
7. No explosive media,the Gas and dust can't corroding metal and damage the insulation