The Siemens 3RA2115-0AD15-1BB4 is a non-fused direct motor starter from the SIRIUS 3RA2 family, size S00, combining a 3RT2015-1BB41 contactor and a 3RV2011-0AA15 circuit-breaker in a single assembly with a thermal bimetallic overload release (Class 10) and a magnetic short-circuit trip. Rated for AC-3 duty up to 690 V, it draws 40 W holding power at 400 V and 60 W at 690 V from the 24 VDC coil — the 4 W DC holding power keeps the magnet engaged without excessive heat in the panel.
Snaps onto 60 mm busbar systems via the supplied 8US1251-5DS10 busbar adapter — no additional bracket or drilling needed for panel integration. Mounts vertically only; clearance requirements: 20 mm upwards, 10 mm downwards, 9 mm at the side, 0 mm forwards and backwards — tight enough for dense S00 layouts. The link module 3RA1921-1DA00 bridges the contactor and circuit-breaker mechanically and electrically — the assembly ships as a single orderable unit, not a kit.