The Schneider Electric A9F68402 is an Acti9 iT60N miniature circuit breaker — 4 poles, 2 A rated current, C-curve. That dual rating means it fits a distribution board or an industrial sub-panel without re-certifying the assembly.
This breaker delivers 50 kA Icu at 415 V AC (50/60 Hz) under EN/IEC 60947-2, and 10 kA Icn at 400 V under EN/IEC 60898-1. For most industrial panels fed by a transformer of 1 MVA or less, 50 kA gives you solid headroom for selectivity coordination downstream. At 440 V it still holds 25 kA, so you're covered on 480 V-class systems.
C-curve trip and 2 A rating — what it protects
For a 2 A breaker, that's 10 to 20 A instantaneous — ideal for general-purpose distribution loads like lighting, small transformers, or control circuits that don't have a high inrush. The 2 A rating is on the low side; you'd use it to protect a 0.5 kVA control transformer or a string of PLC power supplies, not a motor branch.
Width is 72 mm — that's 8 modules of 9 mm pitch, so it takes up 8 TE (terminal unit) spaces in an enclosure.