The ComPacT NSX400N is a complete 4P3D compact circuit breaker designed for optimizing space and breaking capacity. It is an optimal choice for all standard and special applications. The breaking capacity (Icu) is 50 kA rms at 415 VAC 50/60 Hz. The operating voltage is 440 VAC 50/60 Hz. This product includes an electronic MicroLogic 7.3 E Vigi trip unit with a rated current of 400 A and integrated adjustable residual current protection. The MicroLogic 7.3 E Vigi trip unit offers adjustable long-time, short-time, and instantaneous protection. MicroLogic 7.3 E Vigi features a built-in display unit for fine-tuning and energy monitoring. This 4-pole version (185 mm x 255 mm x 110 mm) comes with a variety of optional features and accessories. It complies with international standards (IEC 60947), CCC, EAC, and marine specifications. The ComPacT NSX400N is part of Schneider Electric's EcoStruxure Power architecture.