The Schneider Electric A9F04650 is an Acti9 iC60N miniature circuit breaker rated 50 A with a C curve, 1P+N configuration, and a breaking capacity of 36 kA Icu at 12...60 V AC.
At 220...240 V AC it's 10 kA Icu, and under the domestic-standard EN/IEC 60898-1 it's 6000 A Icn at 230 V. For a 50 A distribution board fed from a transformer of modest size, 10 kA at 240 V is usually adequate; the 36 kA figure matters if this sits close to a high-capacity source (large transformer or generator bus). The dual standard means it's accepted in both industrial (60947-2) and residential/commercial (60898-1) specifications — one part number for both worlds.
Panel integration
Snaps onto standard DIN rail. Width is 36 mm (4 x 9 mm pitches), which is the standard single-module width for a 1P+N MCB — no surprise for panel layout. Strip length 14 mm, torque to 3.5 N.m. IP20 finger-safe front, pollution degree 3 rated — fine for most industrial control panels, but not for washdown zones.