The Siemens 3RK1322-1ES02-1AA4 is a SIRIUS AS-i compact reversing starter in an IP65 enclosure — an electromechanical reversing starter with bimetal motor protection, rated for AC-3 duty at 1.5 kW at 400 V and a setting range of 2.8 to 4 A. The 50 kA short-circuit breaking capacity at 400 V means it can interrupt a fault up to that level without cascading upstream, which is the figure that governs panel SCCR compliance. The IP65 rating means the housing and the tab terminals for the main current circuit withstand washdown environments — suitable for food-and-bev or packaging lines where hose-down is routine.
Bus integration and control wiring
This starter communicates over AS-interface (AS-i) protocol — no PROFIBUS DP onboard. The bus communication function is built in, so it connects directly to an AS-i network without an extra gateway module. The 9-pole motor outgoing feeder and 9-pole power connection carry the motor cable and the AS-i bus in one harness, which keeps the field wiring tidy. A motor brake output is integrated, rated at 500 V DC / 1 A, so you can control the holding brake on a vertical-axis motor directly from the starter without a separate contactor.