The Siemens SENTRON 5SL4106-6 is a 1-pole miniature circuit breaker with a B tripping characteristic, rated 6 A at 230/400 V AC. The 10 kA breaking capacity, certified to both EN 60898 and IEC 60947-2, tells you it can safely interrupt a fault current up to 10,000 A at 400 V without welding or cascading upstream — adequate for most building-level fault levels, but worth verifying against the prospective short-circuit current at the installation point. With an IP20 rating (protected with connected conductors), it's intended for enclosed distribution boards, not open-panel washdown areas.
Integration notes for the panel builder
Mounts in any position — no derating for orientation. The single-pole design protects one phase; for multi-phase circuits you stack adjacent poles (same part number) and link the handles with the busbar.