This ComPacT NSX250HB1 is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all standard and special applications. The breaking capacity (Icu) is 85 kA rms at 500 VAC 50/60 Hz and 75 kA rms at 690 VAC 50/60 Hz. The operating voltage is 690 VAC 50/60 Hz. This product features a thermal-magnetic trip device (TMD) rated at 250 A. The TMD trip device provides adjustable thermal overload protection and fixed magnetic protection. This 4-pole version (140 mm x 161 mm x 86 mm) is supplied with a variety of optional features and accessories. It is compliant with international standards (IEC 60947), CCC, EAC and marine specifications. ComPacT NSX250HB1 is part of Schneider Electric's EcoStruxure Power architecture.