ABB 1SDA101124R1 Moulded Case Circuit Breakers

Working environment

Ambient air temperature: the upper limit is + 40℃, the lower limit is - 5℃, and the average value of 24h does not exceed + 35℃.

Altitude: The altitude of the installation site does not exceed 2000m.

Atmospheric relative humidity: does not exceed 50% when the ambient air temperature is + 40℃; higher relative humidity can be achieved at lower temperatures, the monthly average maximum relative humidity of the wettest month is 90%, and the monthly average minimum temperature of the month is + 25℃, and condensation on the surface of the product due to temperature changes is taken into account.

Pollution level: The pollution level is level 3.

Functional features

Tripping unit: divided into thermal magnetic tripping and electronic tripping. Thermal magnetic molded case circuit breakers are generally non-selective circuit breakers, with only two protection modes: overload long delay and short circuit instantaneous; electronic molded case circuit breakers have four protection functions: overload long delay, short circuit short delay, short circuit instantaneous and ground fault. Some new models also have regional selective interlocking functions.

Operation mode: Manual operation is mostly adopted, and electric opening and closing can be selected for large capacity.