Working conditions of molded case circuit breaker

● Ambient air temperature
○ Upper limit of ambient air temperature+40 ℃; ○ Lower limit of ambient air temperature - 5 ℃; ○ The average value of ambient air temperature within 24h shall not exceed+35 ℃< Br>● Altitude: the altitude of the installation site shall not exceed 2000m< Br>● Atmospheric conditions:
The relative humidity of the atmosphere shall not exceed 50% when the ambient air temperature is+40 ℃; It can have higher relative humidity at lower temperature; The monthly average maximum relative humidity of the wettest month is 90%, and the monthly average minimum temperature of the month is+25 ℃, taking into account the condensation on the product surface due to temperature changes< Br>● Pollution level: Level 3< br>