This Compact NSX400HB1 is a complete 4P 4d 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 85kA rms at 500VAC 50/60Hz and 75kA rms at 690VAC 50/60Hz.The operational voltage is 690VAC 50/60Hz.This product embeds a 400A rating electronic Micrologic 6.3 E trip unit, with an adjustable ground-fault protection (with OFF position).Micrologic 6.3 E trip unit provides adjustable long time, short time and instantaneous protection.Micrologic 6.3 E has an embedded display unit for fine settings adjustment and display of the energy (energy meter).This 4 poles version (185mm 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 NSX400HB1 is part of Schneider Electric EcoStruxure Power architecture.