S00 direct starter, 24 V DC coil, snapped onto 60 mm busbar
The Siemens SIRIUS 3RA2110-0AD15-1BB4 is a non-fused motor starter, designated as a direct starter in size S00. It ships as a pre-assembled unit comprising a 3RT2015-1BB41 contactor, a 3RV2011-0AA10 circuit-breaker, a 3RA1921-1DA00 link module, and a 8US1251-5DS10 busbar adapter. The coil is rated 24 V DC with a holding power of 4 W. The overload release is thermal (bimetallic) with trip class 10; the short-circuit trip is magnetic. Rated for AC-3 duty up to 690 V at 50/60 Hz. Mounting is by snapping onto 60 mm busbar systems in a vertical position. Clearance requirements: 20 mm upwards, 10 mm downwards, 9 mm at the side, 0 mm forwards and backwards.
The unit measures 155.1 mm deep, 45 mm wide, and 200 mm high. Operating temperature range is -20 to +60 °C; storage range is -50 to +80 °C; transport range is -55 to +80 °C. Pollution degree 3 (conductive pollution or dry non-conductive pollution that becomes conductive due to condensation). AWG equivalents: 2x (20 to 16) for the contactor, 2x (18 to 14), and 2x 12.
Lifecycle and compliance — active production, fully documented
The SIRIUS series carries the manufacturer's declaration of conformity for CE, UKCA, and EAC. The product extension auxiliary switch (Yes) allows field addition of auxiliary contact blocks for status feedback to a PLC or safety circuit. The degree of pollution 3 rating means the starter is suitable for industrial environments where conductive dust or condensation is present — typical for control panels in machine tools, conveyors, and pump stations.