The Siemens SENTRON 5SL6113-6YA is a 1-pole miniature circuit breaker rated 13 A with a B tripping characteristic and a 6 kA breaking capacity per EN 60898.
If your panel has a higher fault level, you would step up to the 10 kA-rated 5SL4 series. The single-pole design (1P) switches only the phase conductor; it does not switch the neutral. The 18 mm width (1 MWU) fits standard 18 mm-per-pole DIN-rail enclosures, and the 76 mm depth leaves clearance for a distribution board cover rated IP20.
