This Compact NSX400HB2 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity.It is an optimal choice for motor protection applications.The breaking capacity (Icu) is 85kA rms at 500VAC 50/60Hz and 100kA rms at 690VAC 50/60Hz.The operational voltage is 690VAC 50/60Hz.This product embeds a 320A rating electronic Micrologic 6.3 E-M trip unit, with an adjustable ground-fault protection (with OFF position).Micrologic 6.3 E-M trip unit provides adjustable long time and short time protections, and fixed instantaneous protection.Micrologic 6.3 E-M has an embedded display unit for fine settings adjustment and display of the energy (energy meter).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 NSX400HB2 is part of Schneider Electric EcoStruxure Power architecture.