The Siemens 3RK1322-1KS02-0AA0 is an AS-i compact direct starter — an electromechanical DOL (direct-on-line) motor starter in an IP65 enclosure, designed for distributed motor control on AS-interface networks. It combines a contactor, bimetal overload relay, and short-circuit protection (via upstream circuit-breakers) into one field-mounted unit, eliminating a separate control cabinet for small motors. Rated for 5.5 kW at 400 V in AC-3 duty (cage-rotor motor starting), with an adjustable full-scale current range of 9…12 A.
This starter lives on the machine frame, not in a panel — the IP65 rating (dust-tight and protected against water jets) lets it mount directly on conveyors, packaging machines, or material-handling equipment in washdown areas. The 190 mm depth, 120 mm width, and 270 mm height fit a compact footprint alongside the motor. Communication is via AS-interface (AS-i protocol, not PROFIBUS DP), carrying start/stop commands and feedback over a two-wire flat cable. Two integrated digital inputs on the unit accept local sensors (e.g., limit switches or emergency-stop contacts) without a separate I/O block. The main circuit connects through tab terminals — expect quick-connect spade lugs, not screw clamps. No motor brake output is included — if the load needs a holding brake, you'll add an external brake contactor.