The Siemens 5SL3150-7CC is a 1-pole miniature circuit breaker rated 50 A with a C-trip curve, designed for 230/400 VAC systems and a 4.5 kA breaking capacity. The C-curve characteristic means it trips between 5 and 10 times rated current, making it the standard choice for protecting inductive loads like motor starters and contactor coils in a panel — it handles the inrush without nuisance tripping, unlike a B-curve that would trip on the same surge.
Panel integration and deployment
Snap-on DIN rail mounting for 35 mm rail per EN 60715. The 1-pole footprint occupies a single module width (roughly 18 mm), so it slots into a distribution board or sub-panel without crowding adjacent breakers. Rated for 50 A continuous at 40 °C ambient; no derating needed for standard panel conditions.