The Siemens 5SY4613-7CV is a 3-pole plus neutral miniature circuit breaker (MCB) with a C13 tripping characteristic and a rated ultimate short-circuit breaking capacity Icu of 15 kA at 400 V AC.
What the ratings mean for fit
The C13 curve means this MCB trips between 5 and 10 times rated current (In=13 A) under short-circuit conditions, making it suitable for circuits with moderate inrush — motor starters, small transformers, or groups of LED drivers where the peak start-up current stays within that window. The 15 kA Icu at 400 V AC is the maximum fault current the breaker can safely interrupt without failing; if the prospective short-circuit current at the installation point exceeds 15 kA, a current-limiting upstream device or a higher-rated breaker is needed. The 3P+N configuration (three protected poles plus a switched neutral) is standard for three-phase four-wire systems in IEC markets — the neutral pole opens and closes with the phases but does not carry an overload trip.
Panel integration context
Snap-on mounting to DIN rail EN 60715. The 3P+N width at 4 module spaces (72 mm at 18 mm/mod) is the standard footprint for this pole count — check the enclosure fill factor if the panel is already dense. The C13 rating at 15 kA SCCR covers most industrial panel sub-feed applications where the transformer or main breaker limits the fault current to that level.