The Siemens 3RV1042-4EA10 is a SIRIUS motor protection circuit breaker rated for 32 A continuous current with a Trip Class 10 characteristic, meaning it trips within 10 seconds at 7.2× I_set — lean enough to protect standard IEC induction motors during stall or locked-rotor conditions without nuisance tripping on normal starts.
Depth is 174 mm, which overhangs a standard 160 mm DIN-rail channel by 14 mm; check the enclosure depth before laying out the backplate. Solid conductors up to 2x 16 mm² fit the screw terminals; stranded accepts up to 1x 70 mm² or 2x 50 mm². That covers most motor feeder cables up to about 35 kW at 400 V.
Substance prohibitance date of 07/01/2006 aligns with the original RoHS Directive 2002/95/EC; the part carries RoHS compliance from that baseline.