This Compact NSX400N is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity.::It is an optimal choice for all standard and specific applications.::The breaking capacity (Icu) is 50kA rms at 415VAC 50/60Hz.::The operational voltage is 690VAC 50/60Hz.::This product embeds an electronic Micrologic 2.3 trip unit, with 250A rating.::Micrologic 2.3 trip unit provides adjustable long time and short time protections, and a fixed instantaneous protection.::This 3 poles version (140mm x 255mm x 110mm) comes with a variety of optional functions and accessories.::It is compliant with international standards (IEC 60947), CCC, EAC and marine specifications.::Compact NSX400N is part of Schneider Electric EcoStruxure Power architecture.