The 5SY4610-7CV is a Siemens miniature circuit breaker (MCB) rated for a breaking capacity Icu of 15 kA at 400 V AC, configured as 3-pole plus neutral (3P+N) with a C10 tripping characteristic. The C-curve means it trips between 5 and 10 times the rated current — suited for motor starting or moderate inrush loads where a B-curve would nuisance-trip. The 15 kA Icu at 400 V tells you it can safely interrupt a fault up to that level without upstream damage, which matters for panel coordination studies.
Mounts on standard DIN rail inside a distribution or control panel. The 3P+N configuration occupies four module widths. The C10 rating (10 A nominal) and 15 kA breaking capacity make it a fit for branch-circuit protection in 400 V three-phase networks where the prospective short-circuit current is known to be under that threshold.