The Siemens SENTRON 5SL6101-7MB is a 1-pole miniature circuit breaker rated 1 A with a C-trip curve and a 6 kA breaking capacity certified to both EN 60898 and IEC 60947-2. This dual-standard rating means the part is accepted for residential and infrastructure branch-circuit protection (EN 60898) and also meets the industrial coordination requirements of IEC 60947-2 for panel builders who need documented SCCR compliance.
Compared to the 5SL6120-7 (20 A, same 1-pole C-curve, same 6 kA rating), the 5SL6101-7MB shares the identical 18 mm width and 76 mm depth, so it drops into the same DIN-rail panel layout without rewiring. The difference is purely the current rating: 1 A versus 20 A, which governs the load it protects. The 5SL6101-7MB also carries a higher mechanical service life of 20 000 operating cycles typical versus 10 000 on the 5SL6120-7, reflecting the lower thermal stress at its rated current.
Single modular width (18 mm) means it occupies one slot.