△The installation site is 2000m above sea level or below;
△The ambient medium temperature is not higher than +40℃ and not lower than -5℃; and the 24-hour average value does not exceed 35℃ (except for special orders);
△The relative humidity of the air at the installation site does not exceed 50% when the maximum temperature is +40℃, and can have higher relative humidity at lower temperatures.
△The average minimum temperature of the wettest month does not exceed +25℃, and the average maximum relative humidity of the month does not exceed 90%, and the condensation on the product surface due to temperature changes is considered;
△The pollution level is level 3;
△Protection level: IP20;
△The installation category of the main circuit of the circuit breaker is Ⅲ, and the installation category of the auxiliary circuit and control circuit that are not connected to the main circuit is Ⅱ;
△In a medium without explosion hazard, and the medium does not have gas and conductive dust that are sufficient to corrode metal and destroy insulation;
△In a place without rain or snow;
△The circuit breaker should be installed according to the product's instruction manual.