The Siemens 3RA1210-0CD15-0BB4 is a SIRIUS non-fused load feeder configured as a reversing starter, Size S00. It integrates a supplied contactor (3RT10 15-1BB42) and circuit-breaker (3RV10 11-0CA10) into one unit with bimetal motor protection, so it handles forward-reverse motor control in a single panel footprint without extra wiring between components.
Rated 0.06 kW at 400 V — this sets the maximum motor size the starter can switch in AC-3 duty; for a 400 V line, that's a roughly 0.18 A motor full-load current, so it fits small conveyor drives, valve actuators, or fan starters. Insulation voltage rated 690 V, meaning the internal clearances and creepage are designed for 690 V systems even though the motor rating is at 400 V — useful if the panel feeds a 690 V bus and the starter is tapped downstream via a transformer. Snaps onto 60 mm busbar systems (center-to-center spacing 60 mm) — that's the standard Siemens SIRIUS busbar pitch, so it mounts directly on the power distribution bus without adapter plates. Mounting position is horizontal only. Wire range accepts solid or stranded 0.5... 4 mm², and dual-wire capability for 2x (0.75... 2.5 mm²) — covers most control-panel wiring from 18 AWG down to 14 AWG on the main contacts.
Designed for snapping onto 60 mm busbar systems inside a control panel. The S00 frame size keeps the depth to 128 mm, width 90 mm, height 203 mm — fits standard 200 mm deep enclosures with clearance for the busbar behind. Requires 20 mm clearance above and at the sides, 10 mm forward, 9 mm backward, and 0 mm below.