The Siemens 3RA1210-1BD15-0AF0 is a SIRIUS non-fused load feeder configured as a reversing starter in frame size S00. It ships as a pre-assembled unit containing a 3RT10 15-1AF02 contactor, a 3RV10 11-1BA10 circuit-breaker for motor protection, a 3RA19 11-1AA00 link module, and a 3RA19 13-1D RS assembly kit. Rated at 0.75 kW at 400 V, this unit is sized for small reversing motor loads — conveyors, gate drives, or any application needing forward/reverse without a separate interlocking contactor pair. The insulation voltage is rated 690 V, giving headroom above the 400 V operating point. Snaps directly onto 60 mm busbar systems (center-to-center spacing 60 mm), which is the standard for SIRIUS S00 feeders; no additional DIN-rail adapter is needed.
Mounting position is horizontal, fastened by snapping onto the busbar. Required clearances around the unit: 20 mm upwards, 10 mm forwards, 9 mm backwards, 0 mm downwards, and 20 mm at the side. These are the minimums for airflow and arc containment — tighter than that and you risk derating or nuisance tripping from heat buildup.
Environmental and wiring
Operating temperature range is -20 to +70 °C; storage and transport range -55 to +80 °C and -20 to +70 °C respectively. Shock resistance is 9.8g. Solid wire acceptance: 0.5 to 4 mm², with 2x (0.75 to 2.5 mm²) for doubled conductors; stranded also 0.5 to 4 mm². AWG for main contacts is 2x (18 to 14). No-load switching frequency is 15 operations per second.