The Schneider Electric A9P54710 is an Acti9 iC40N miniature circuit breaker rated 10 A, C-curve, 3P+N, with a 10 kA Icu breaking capacity at 400 V AC per IEC 60947-2. The thermal-magnetic trip unit gives you a C-curve magnetic threshold of 5 to 10 times In (8 x In ±20% per IEC 60947-2), so it handles moderate inrush from small motor loads or lighting ballasts without nuisance tripping, while still clearing a hard fault quickly. It carries dual certification to EN/IEC 60898-1 (the household-and-similar standard, Icn 6000 A at 400 V) and EN/IEC 60947-2 (the industrial standard, Icu 10 kA at 400 V). That dual rating means it qualifies for both residential-distribution boards and industrial control panels — the 10 kA Icu is the number you use for SCCR coordination in an industrial enclosure.
The tunnel-type terminals accept 1 to 16 mm² rigid or 1 to 10 mm² flexible copper, with a wire-strip length of 14 mm and a tightening torque of 2 N·m. Neutral is on the left, poles protected are three. The unit includes a contact-position indicator and a trip indicator for visual state at a glance.