The Schneider Electric A9F04750 is an Acti9 iC60N miniature circuit breaker rated 50 A, 3P+N, curve C. Curve C trips magnetically at 8 x In +/- 20 %. Breaking capacity is the headline: 36 kA Icu at 12-133 V AC, 20 kA at 220-240 V, 10 kA at 380-415 V, and 6 kA at 440 V (all per EN/IEC 60947-2). The Icn rating under EN/IEC 60898-1 is 6000 A at 400 V. The higher 36 kA figure applies only at lower voltages (12-133 V), so don't misread it as the 400 V capability. Thermal-magnetic trip unit, no electronics to fail. Suitable for isolation per both standards — the contact position indicator shows open/closed state visibly.
Deployment context
Designed for DIN-rail mounting in commercial and industrial distribution boards — the 3P+N format with neutral left is standard for single-phase and three-phase subdistributions where you need to break all poles. The 50 A rating and curve C suit mixed loads: lighting, small motor groups, socket outlets, and general power distribution. Earth-leakage protection requires a separate vigi block (not included), so plan for that if the circuit needs RCD protection.