VM51E, MCCBs with electronic trip units

• The circuit breaker has the characteristics of small dimension, high breaking capacity, short arcing and anti-vibration. 

• The circuit breaker can be installed vertically or horizontally. 

• The circuit breaker has an isolation function.

• The circuit breaker cannot be reversed into the line, that is,only1.3.5 connected to the power line,and 2,4,6 connected to the load line.

• Standard: IEC 60947-2

Normal work and installation conditions

• The ambient air temperature is-5 °C～+ 40 ℃;

• The altitude of the installation site does not exceed 2000 meters; The relative humidity of the air at the installation site does not exceed 50 % at a maximum temperature of+40℃,and may have a relatively high relative humidity at a lower temperature,for example, 90 % at 20 ℃. Special measures should be taken for condensation that occasionally occurs due to temperature changes;

• Pollution degree is 3;

• The circuit breaker main circuit installation category is III, he remaining auxiliary circuits, the control circuit installation category is II;

• The circuit breaker is suitable for electromagnetic environment A;

• The circuit breaker shall be installed in a place where there is no danger of explosion and no conductive dust, no suffcient to corode the metal and damage the insulation.

• The circuit breaker should be installed in a place where there is no rain or snow;

• Storage conditions: ambient air temperature is -40 ℃~+70 ℃.

Technical data and performance