The Siemens 3RV2917-5D is a SIRIUS terminal block designed for power-outfeed applications and for connecting 3-phase busbars in a motor-starter or distribution assembly. Rated for a maximum ampacity of 32 A with an insulation voltage of 500 V at pollution degree 3, it uses spring-loaded terminals that accept 1.5 to 6 mm² solid or stranded copper. The 50.2 mm depth and 40.2 mm width let it fit into the standard DIN-rail footprint alongside SIRIUS contactors and circuit breakers — no extra panel space needed beyond what the rail already occupies.
Spring-cage terminals accept 1.5–6 mm² solid or stranded, or 1.5–4 mm² finely stranded with ferrule. The 32 A rating matches the typical infeed capacity of a SIRIUS S00 or S0 motor starter feeder. The 50.2 mm depth leaves clearance in standard 80 mm or 100 mm deep enclosures.
RoHS compliant with substance prohibition date 10/01/2009. The insulation voltage of 500 V at pollution degree 3 covers standard 400 VAC industrial panels with margin.