1-pole D-curve MCB at 1.6 A
The Siemens 5SL6115-8CC is a 1-pole miniature circuit breaker with a D-tripping characteristic, rated at 1.6 A and a breaking capacity of 6 kA at 230/400 V AC. At 1.6 A it covers the low end of the D-curve range, so it's a fit for fractional-horsepower motors or control-transformer primaries on a 230/400 V line.
Single-pole width (1 module, roughly 18 mm) keeps the panel density tight — useful when you're stacking multiple motor branch circuits in a small enclosure. The 6 kA breaking capacity coordinates with most downstream contactors and overloads in a typical industrial control panel; verify the upstream SCCR of the panel for full selectivity.