NB-DW45 Air Circuitl Breaker
△ Temperature condition:-5°C~+40°C:the average value within 24h not exceed+35°C.
△ Elevation:altitude of installation place shall not exceed 2000m.
△ Atmosphere condition:relative humidity at+400C shall not exceed 50%. Hiaher humidity ispermissible atlower temperature condition. When the higher monthly avenge relative humidity is 90% in the humiddest month. The lowest monthly average temperature of this month is +25°C. And consider the influence of dew on product surface due to temperature changes.
△ Pollution grade:grade III.
△ The breaker should be installed according to the requirement on the instruction manuakthe verticalinclination degree shall not exceed 5C