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.
Key ratings and what they mean for fit
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. The 50 kA short-circuit breaking capacity (Icu at 400 V) means it can safely interrupt a fault up to that level without upstream fuses needing to clear first, which simplifies coordination in a distribution board. The IP65 rating means the housing and all connections are protected against dust ingress and low-pressure water jets — suitable for mounting directly on a machine frame or conveyor line where washdown occurs, rather than inside a sealed control cabinet. Ambient temperature range of -25 to +55 °C covers most indoor industrial environments and cold warehouses; no derating needed at the lower end, but verify the motor's own thermal limits in that range.
Integration notes for the panel builder or machine integrator
Dimensions are 120 mm wide, 270 mm high, 190 mm deep — a compact footprint for an IP65 reversing starter with integrated bus communication. 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.