The Siemens 3RV1935-5A is a SIRIUS 3-phase supply terminal in Size S2, designed to feed power from the top via a 3-phase busbar connection. It mates directly with S2-frame circuit breakers in the SIRIUS family — the same Size S2 designation on the spec tells you it's the matching busbar terminal for that frame. Rated ampacity is 108 A, which means it can carry the full load current of an S2 breaker up to that level without becoming the thermal bottleneck in the panel. Terminals accept solid or stranded copper from 10 mm² up to 50 mm² (roughly 8 AWG to 1/0 AWG), with screw-type connections — a straightforward termination for panel builders who prefer screw clamps over spring-cage on high-current feeds.
Depth of 44 mm is shallow enough that it won't force a deeper enclosure than the S2 breaker already requires.
RoHS compliance date is marked as 07/01/2006, meaning it meets the EU RoHS substance restrictions effective from that date.