This device is a rated current 400A circuit breaker from EasyPact CVS400N. The rated breaking capacity(Ics) is 50kA at 415VAC,and complete range with Ics=100%Icu. The version of breaker is 3poles frame with detection on 3poles, also accompanied ETS 2.3 trip unit for electronic protection. It is conformed to standard IEC60947-2 for circuit breakers part. This device is certified for operation in pollution degree III environment as defined IEC60947-1& IEC60664-1, and respected for RoHs requirement as european environment directive EC/2002/95. It can be mounted by blackplate or Din rail,also through the door of class II switchboard without downgrading switchboard insulation. The front of toggle offers IP40 protection, but when it is equiped extended rotary handle inside the switchboard, additional IP54 protection degree for extended rotary handle. This series have slots for electrical auxiliaries(MN/MX/OF/SD),depending on the type of trip unit if rotary handle installed. The fixed dimension is 140mm width,255mm height,110mm depth.