The Siemens 3RA1210-0HA15-0AM2 is a reversing motor starter in the SIRIUS 3RA12 series, built on the S00 frame size. It is a panel-mount unit rated for 208 VAC control voltage and 0.5 hp motor load. The reversing configuration means it contains two contactors mechanically interlocked to switch motor direction without external interposing relays — a space-saving choice for conveyor reversals or actuator extend-retract cycles where the panel builder wants a single order code instead of wiring two contactors and a mechanical interlock.
The S00 frame is the smallest SIRIUS frame, sized for fractional-horsepower motors. At 208 VAC the 0.5 hp rating reflects the lower voltage's reduced torque capability. The 208 VAC coil matches common North American control voltages. Panel builders should verify the coil draw against the PLC output card's per-channel current rating.