Product details

Product Overview

YEM3D-250 DC circuit breakers are mainly used in DC systems with rated insulation voltage of 1600V,rated working voltage of DC 1500V and below,over load and short circuit protection foe power distribution and protection lines and power supply equipment in DC systems with rated current 250A and below.

Operating conditions

1. Ambient temperature -5℃~+40℃。
2. Installation site of the elevation of not more than 2000m.
3. The relative humidity of the air at the installation site does not exceed 50%at a maximum temperature of +40℃and higher relative humidity at a lower temperature,for example 90% at 20℃.Special measures should be taken for condensation occasionally due to temperature changes.
4. Pollution level is 3.
5. Circuit breaker main circuit installation category Ⅲ,the remaining auxiliary circuits,cintril circuit installation category Ⅱ.
6. Circuit breakers foe electromagnetic environment A.
7. Circuit breakers should be installed in the absence of explosive and non-conductive dust,enough to corrode the metal and damage the insulation.
8. Circuit breakers should be installed in the absence of rain and snow invasion.
9. Storage conditions:ambient air temperature is -40℃~+70℃.