What this AS-i compact reversing starter is
The Siemens 3RK1322-0GS02-1AA0 is an AS-interface compact reversing starter in an IP65 enclosure — a self-contained motor starting and reversing unit for distributed automation, not a panel-mount contactor. It integrates the reversing contactor pair, bimetal overload protection, short-circuit protection via circuit-breakers, and AS-i bus communication into one housing rated for washdown environments.
The setting range of 0.45…0.63 A (full-scale 0.63 A) and AC-3 power rating of 0.18 kW at 400 V define the motor it can handle — this is sized for a small three-phase motor, typically a fractional-horsepower conveyor drive or valve actuator.
Main circuit connections use tab terminals; the 9-pole motor outgoing feeder and 9-pole power connection are pre-configured for quick plug-in wiring. Two integrated inputs are available for local sensors or pushbuttons, reducing the need for separate I/O blocks. AS-interface protocol is supported natively. Bus communication function is built in. No motor brake output is included on this variant — if the application requires a holding brake, an external brake control module must be added.