The Siemens 5SY4116-6 is a 1-pole miniature circuit breaker from the SENTRON family, with a B tripping characteristic. It occupies one modular width unit (18 mm) on the DIN rail, rated for AC circuits up to 400 V (single- or multi-phase) and DC circuits up to 60 V (72 V max). The interrupting capacity is 10 kA per EN 60898-1, 20 kA per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235 — so it covers both residential-panel and industrial-panel SCCR requirements depending on the standard you're designing to.
Ratings and what they mean for fit
The B-curve trips between 3 and 5 times rated current — standard for resistive and general-purpose loads where inrush isn't high. Rated for pollution degree 3 and overvoltage category III, meaning it's suited for industrial control panels, not just clean indoor distribution boards. The 10 kA SCCR under EN 60898 covers most sub-distribution applications; the 20 kA under IEC 60947-2 gives headroom for high-fault locations like main panel feeders. For UL 1077-listed supplementary protection, the 5 kA rating applies — check your panel's available fault current if you're using it in a North American industrial control panel.
Panel integration
Snap-on DIN rail mount, any orientation. 18 mm width (1 MW), 70 mm installation depth, 76 mm overall depth. Combined terminal top and bottom — wire can enter from either side. Sealable for tamper-proofing. Halogen-free and silicon-free construction, relevant for clean-room or food-grade panels where outgassing matters. IP20 with connected conductors; standard for enclosed panel use.