The Siemens 5SL6106-8CC is a 1-pole miniature circuit breaker (MCB) from the 5SL6 Basic Devices family, rated 6 A with a D tripping characteristic at 230/400 V AC and a 6 kA breaking capacity. The 6 kA breaking capacity (Icn) at 230/400 V tells you this breaker can safely interrupt a fault current up to 6,000 A without welding its contacts or failing catastrophically. If your site's fault level exceeds 6 kA, you need a higher-rated MCB or a current-limiting upstream device.
RoHS compliance is confirmed effective June 1, 2013, and the part contains lead (CAS 7439-92-1) above the 0.1% threshold per REACH Article 33 — a standard disclosure for electrical components with lead-bearing solder joints or contact materials. No conflict with the RoHS exemption for lead in copper alloys used in electrical contacts.
Snap-on DIN rail mounting per EN 60715. Single-pole width (roughly 18 mm per pole) keeps panel density high. The D-curve's magnetic trip threshold means you should verify the load's inrush profile against the breaker's time-current curve before committing the BOM line — a motor with a high locked-rotor current may still be fine, but a capacitor bank's inrush could exceed the magnetic hold.