Molded Case Circuit Breaker Working Conditions

● Ambient air temperature:
○ The upper limit of ambient air temperature is +40℃;
○ The lower limit of ambient air temperature is -5℃;
○ The average value of ambient air temperature for 24 hours does not exceed +35℃.
● Altitude: The altitude of the installation site does not exceed 2000m.
● Atmospheric conditions:
The relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is +40℃; higher relative humidity can be achieved at lower temperatures; the average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is +25℃, taking into account the condensation on the product surface due to temperature changes.
● Pollution level: The pollution level is level 3.