The Siemens 5SL6106-6CC is a 1-pole SENTRON miniature circuit breaker with a B tripping characteristic, rated 6 A at 400 V AC and a 6 kA breaking capacity per EN 60898. The 6 kA breaking capacity at 400 V AC covers most distribution board fault levels; if your panel's prospective short-circuit current exceeds that, step up to the 10 kA or 15 kA variants in the same 5SL6 family. Rated voltage is 400 V AC for multi-phase operation, 250 V AC single-phase — so it fits both 230/400 V three-phase boards and single-phase sub-distribution. The 50/60 Hz rating covers both mains frequencies without derating. Thermal derating is published: at 40 °C ambient the continuous current drops to 5.66 A, at 50 °C to 5.29 A.
Snap-on DIN rail mount, 1 MW (18 mm) wide, 76 mm deep. Fits any standard 35 mm DIN rail enclosure. Suitable for dry indoor distribution boards. Operating temperature range -40 to 75 °C covers unheated utility rooms and outdoor-adjacent enclosures.