The A9N60738 is a 3-pole miniature circuit breaker from the Acti9 C120 series, rated 100 A at 40 °C with a C-curve (magnetic trip at 8 x In ±20%). The 10 kA Icu at 230…400 V AC 50/60 Hz conforming to EN/IEC 60947-2 means it safely interrupts fault currents up to 10 kA under those voltages — sufficient for most commercial and light industrial distribution panels where the prospective short-circuit current stays below that threshold. The thermal-magnetic trip unit handles overloads (thermal) and short-circuits (magnetic) in one package, so no separate protection module is needed for the branch circuit.
Deployment context
Tunnel terminals accept 1…50 mm² rigid or 1.5…35 mm² flexible, with a 3.5 N.m tightening torque and 15 mm strip length.
Designed to EN/IEC 60947-2 for circuit-breaker performance. Overvoltage category III (equipment in fixed installations). Limitation class 3 for energy-limiting performance under short-circuit. Separate earth-leakage protection block can be added if needed.