The Siemens 5SL6515-7BB is a miniature circuit breaker rated 230 V with a 6 kA interrupting capacity, 1+N-pole configuration, C-trip curve, and 1.6 A rated current. This is the Italy version, meaning it follows the Italian standard for single-pole plus neutral switching — the neutral pole switches but does not have overload protection.
The 1+N-pole format means the live pole is protected and switched; the neutral pole is switched only, so it disconnects the neutral when the breaker is turned off but does not provide overcurrent protection on the neutral conductor. This is typical for Italian-style installations where neutral switching is required by local wiring rules. The 1.6 A rating is on the low end — sized for small lighting circuits or control transformers, not general socket outlets.