What This SIRIUS Reversing Starter Does
The Siemens SIRIUS 3RA1210-0ED15-0AP0 is a non-fused load feeder configured as a reversing starter, Size S00. It combines a supplied contactor (3RT10 15-1AP02), a bimetal motor-protection relay, and a circuit-breaker (3RV10 11-0EA10) into one unit that snaps onto a 60 mm busbar system. Rated at 0.09 kW at 400 V with an insulation voltage of 690 V, it handles reversing motor duty in a compact footprint — 90 mm wide, 203 mm tall, 128 mm deep.
Sizing and Mounting for a Panel
Mounts horizontally by snapping onto a 60 mm busbar system — the busbar center-to-center spacing matches that dimension. Keep 20 mm clearance above and to the sides, 10 mm forward, and 9 mm backward for airflow and wiring access. The front carries IP20 protection, so it's safe for open-panel use but not washdown environments.
The main circuit accepts solid or stranded wire from 0.5 to 4 mm²; dual terminals handle 2x (0.75 to 2.5 mm²) or 2x AWG 18–14. Shock resistance is 9.8g — tough enough for most industrial panels but not for direct machine-mount near a vibrating press.