The Siemens 3RA1210-0BA15-0AP0 is a SIRIUS non-fused reversing load feeder, size S00, configured as a reversing starter for controlling motor direction in a compact footprint. It integrates a supplied contactor (3RT10 15-1AP02), a circuit-breaker for short-circuit protection (3RV10 11-0BA10), a link module (3RA19 11-1AA00), and an RH assembly kit (3RA19 13-2A) into a single, pre-assembled unit that snaps onto a 35 mm standard rail.
The 0.06 kW rating at 400 V defines the maximum motor size this reversing feeder can switch in AC-3 duty — a common spec for small reversing applications where space on the DIN rail is tight. The bimetal overload relay provides thermal motor protection, set to the motor's full-load current, and the integrated circuit-breaker handles short-circuit faults up to its rated breaking capacity. The unit accepts solid or stranded wire from 0.5 to 4 mm² on the main contacts, with a 2x (0.75 to 2.5 mm²) option for paralleled conductors — a practical range for the motor leads this size feeder serves.
Snap-on fastening onto a 35 mm standard DIN rail, mounted horizontally, with clearances of 20 mm upward, 10 mm forward, 9 mm backward, and 20 mm at the side for ventilation and wiring access. Operating temperature range of -20 to +70 °C and storage range of -55 to +80 °C cover most indoor industrial environments; shock resistance of 9.8g ensures it holds up in moderate vibration settings.
It is a standard catalog item in the SIRIUS family, so it remains a straightforward BOM line for new panel builds and replacement stock alike.