The Siemens 3RK1300-1DS01-1AA0 is an electromechanical reversing starter from the SIRIUS EM 300 RS family, designed for the ET 200X distributed I/O system. It combines a reversing contactor, bimetal overload relay, and PROFIBUS DP communication in a single IP65 enclosure — meaning it mounts directly on the machine or conveyor section, not in a central panel. The 1.1 kW rating at 400 V AC-3 covers small reversing drives like diverters, lift tables, and shuttle cars where you need forward/reverse control without a separate VFD.
The AC-3 rating at 400 V is 1.1 kW — that's the motor-switching capability for squirrel-cage induction motors, the standard duty cycle for reversing starters. The setting range of 2.2...3.2 A on the bimetal overload matches the full-load current of a 1.1 kW 400 V motor (typically around 2.5 A). Operating voltage is 400...500 V AC, three-phase. The 0...55 °C ambient operating range covers most industrial floor conditions without derating.
PROFIBUS DP and ET 200X integration
This starter has onboard PROFIBUS DP communication — it connects directly to the ET 200X backplane, so the reversing commands and status feedback (run, fault, overload) travel over the fieldbus without hardwired control wires. The 9-pole motor feeder and 9-pole power connection are tab terminals, sized for the 2.2...3.2 A range.