The Schneider Electric A9N60718 is a 4-pole Acti9 C120 miniature circuit-breaker rated 100 A at 40 °C with a C-curve trip characteristic. The 5 kA Icu breaking capacity at 230…400 V AC per EN/IEC 60947-2 covers most commercial and light industrial fault levels; the C-curve (magnetic trip at 8 x In ±20 %) handles moderate inrush from motor starters and lighting banks without nuisance tripping.
The C-curve's magnetic trip at 8 x In (800 A nominal) means it holds through transformer inrush and motor start currents up to that multiple; above that it trips instantaneously. Thermal-magnetic trip technology gives you both overload protection (bimetal strip) and short-circuit protection (solenoid) in one package.
The 4-pole width is 108 mm (12 x 9 mm pitches). Tunnel terminals accept 1…50 mm² rigid or 1.5…35 mm² flexible cable; torque to 3.5 N·m. Wire strip length is 15 mm for power connections. Provision for padlocking allows lockout/tagout on the toggle.