What this AS-i compact starter is and where it fits
The Siemens 3RK1322-1JS02-1AA0 is an AS-i compact reversing starter in an IP65 enclosure, designed for distributed motor control in washdown or outdoor zones where a central panel isn't practical. It integrates the reversing contactor, bimetal overload protection, and short-circuit protection via circuit-breakers into a single 190 mm deep, 120 mm wide, 270 mm high housing. The electromechanical switching contacts handle motor loads up to 4 kW at 400 V AC-3 duty, with a setting range of 7 to 10 A. The IP65 rating means the enclosure and the tab terminals for the main current circuit withstand hose-directed water and dust ingress — suitable for food-and-bev lines, conveyor junctions, or material-handling zones where washdown is routine. The 50 kA short-circuit breaking capacity (Icu) at 400 V means this starter safely interrupts fault currents up to that level without cascading upstream — a figure that matters when the unit is fed from a high-capacity distribution board. The AS-interface protocol support (yes) and bus communication function (yes) let it sit directly on an AS-i network, reducing point-to-point wiring back to a PLC cabinet. Two integrated inputs are included per the description, which can capture local pushbuttons or limit-switch signals without an additional I/O block.
Integration notes for panel and field deployment
Mounting is via the IP65 enclosure's own fixing points — not DIN-rail snap-on — so plan for four corner bolts or a bracket plate in the panel layout. The 9-pole motor outgoing feeder and 9-pole power connection use tab terminals, which mate with industry-standard 6.3 mm or 4.8 mm quick-connect receptacles; verify the mating connector type before terminating. The ambient temperature range of -25 to +55 °C during operation covers most indoor and sheltered outdoor installations, but the 50 kA breaking capacity is rated at 400 V — derating may apply at higher ambient or lower voltage; the datasheet's coordination curves are the reference for that.