The Siemens 3RK1322-0DS02-1AA4 is an AS-interface compact reversing starter in an IP65 enclosure — a self-contained motor start/reverse unit for a 0.09 kW three-phase motor at 400 V AC-3 duty, with a bimetal overload relay adjustable from 0.22 to 0.32 A. IP65 means the housing is dust-tight and protected against low-pressure water jets, so this starter mounts directly on a machine frame or conveyor section without a separate control cabinet — common on packaging lines, material handling, and automated assembly cells where space is tight and washdown is routine. It communicates over AS-interface (the protocol is built in), carries two integrated inputs for local sensors or pushbuttons, and includes a motor brake output rated 500 V DC / 1 A — useful for holding brakes on vertical-axis drives or quick-stop applications.
The AC-3 rating of 0.09 kW at 400 V defines the maximum induction motor it can switch under full-load starting — that's roughly a 0.12 hp motor, sized for small conveyors, diverters, or actuator drives. The setting range of 0.22 to 0.32 A on the bimetal overload matches the full-load current of that motor class. In a panel with a 50 kA SCCR rating, this starter coordinates cleanly; in a higher-fault installation you'd need a current-limiting upstream device. The 9-pole motor outgoing feeder and 9-pole power connection mean it uses tab terminals for the main circuit — a quick-connect style common in distributed motor control. The brake output is separate, rated 500 V DC / 1 A, so it handles small electromagnetic brakes directly without an interposing relay.
This part carries a current lifecycle status from the manufacturer, meaning it remains in the active catalog and is not subject to a last-time-buy or phase-out notice.