The Siemens SENTRON 5SL4616-6 is a 3P+N miniature circuit breaker with a B-curve trip characteristic, rated 16 A at 400 V AC and a 10 kA breaking capacity per EN 60898 and IEC 60947-2. That 10 kA SCCR at 400 V means it safely interrupts fault currents up to that level without cascading upstream — a standard rating for residential and light commercial distribution boards. The 4-module-width (72 mm) body snaps onto DIN rail and accepts supplementary devices (auxiliary contacts, shunt trips, undervoltage releases) for downstream alarming or remote trip.
What the ratings mean for fit
B-curve trips between 3 and 5 times rated current (48–80 A magnetic release), so it's sized for resistive and general-purpose loads — lighting, small heaters, control transformers — not motor starting or high-inrush circuits where a C- or D-curve would be needed. The 3P+N design switches all three phases and switches the neutral, making it suitable for TN or TT systems where neutral isolation is required. The 10 kA breaking capacity at 400 V AC covers most utility-side fault levels in residential and infrastructure panels; if your service entrance has a higher prospective fault current, you'll need an upstream current-limiting device or a higher-rated breaker.
Panel integration
The 72 mm width (4 modular units) fits standard DIN-rail enclosures. IP20 with connected conductors means it's protected against finger contact but not moisture — install inside a panel with an IP54 or higher enclosure if washdown or outdoor exposure is expected. The sealable design allows padlocking the handle in the OFF position for lockout/tagout. Halogen-free and silicon-free construction matters for environments sensitive to corrosive off-gassing (data centers, clean rooms, marine).