The A9F68350 is a 3-pole Acti9 iT60 miniature circuit breaker rated 50 A with a C curve — the standard choice for motor and distribution circuits where inrush currents are moderate. The C curve's magnetic trip threshold of 8 x In (400 A) means it rides through transformer and small-motor start-up without nuisance tripping, yet clears hard faults fast enough for most panel schedules. Breaking capacity is the headline number here: 36 kA Icu at 133 V AC, 20 kA at 240 V AC, 10 kA at 415 V AC, and 6 kA at 440 V AC per EN/IEC 60947-2. The 6 kA Icn at 400 V per EN/IEC 60898-1 covers domestic/commercial coordination.
DIN-rail mount, 54 mm wide, with a removable comb busbar — fits standard 3-pole spacing in any enclosure. Terminals accept 1–35 mm² rigid or 1–25 mm² flexible wire; strip length 14 mm, torque to 3.5 N·m. IP20 B finger-safe front. Dual-certified to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (domestic/commercial) — covers both utilization categories. Pollution degree 3, overvoltage category IV, suitable for isolation. Tropicalized per EN/IEC 60068-2-78 (95% RH). Operating temperature -35 to 70 °C. No earth-leakage protection built in; that's a separate module.