The Siemens 3RK1322-0BS02-1AA1 is an AS-Interface compact reversing starter in the SIRIUS family — a self-contained motor starting and protection unit rated for small reversing loads up to 0.06 kW at AC-3 duty on a 400 V line. The electromechanical switching contact and bimetal overload relay are integrated into a single IP65 enclosure, so it mounts directly on the machine frame or conveyor section without a separate control panel. The 0.14 A to 0.2 A setting range matches fractional-horsepower motors on small drives, actuators, or positioning tables.
The IP65 rating tells you the housing and the AS-i bus connection are sealed against hose-directed water and dust ingress, so this unit is suited for washdown zones in food processing or packaging lines.
Bus integration and brake output
This starter communicates over AS-Interface (AS-i protocol), not PROFIBUS DP, so it drops into an AS-i network segment directly. The built-in motor brake output (24 V DC / 3 A) handles the holding brake on a reversing motor without a separate contactor — one less component to wire and commission. The 9-pole motor outgoing feeder and 9-pole power connection use tab terminals, so the field wiring is a plug-in harness rather than individual screw terminals; verify the mating connector profile before panel build.