The Siemens 3RK1300-0BS10-1AA0 is an electronic reversing starter from the SIRIUS family, designed as a compact motor-starting and protection unit for ET 200X distributed I/O environments. It integrates solid-state motor protection with a setting range of 2.0 to 5.95 A, delivering up to 2.2 kW at 400 V under AC-3 duty — the standard motor-switching load profile for squirrel-cage induction motors. The solid-state switching contacts mean no mechanical wear on the main power path, so the unit handles the full electrical life without contact replacement. The IP65 enclosure allows direct mounting in washdown or dusty environments without a separate cabinet — suitable for food-and-bev lines, packaging cells, or any area where hose-down cleaning is routine. The PROFIBUS DP interface ties it into the ET 200X remote I/O backbone, so reversing commands and diagnostic data travel over the fieldbus without hardwired control wires.
Ratings and what they mean for fit
The AC-3 rating of 2.2 kW at 400 V is the figure that governs motor sizing: it tells you the starter can switch a 3-phase induction motor up to that power under starting and running conditions. The setting range of 2.0 to 5.95 A means the overload protection is adjustable within that band — you dial it to the motor's full-load current, not the starter's maximum. The minimum motor power of 0.75 kW sets the lower bound; below that, the solid-state trip curve may not coordinate with the motor's thermal characteristics. The short-circuit breaking capacity is 100 A at 400 V — this is the maximum fault current the integrated solid-state switch can interrupt without external fusing. The design requires fuses for short-circuit protection; the 100 A figure assumes the correct upstream fuse coordination per the manufacturer's table. Operating temperature range is 0 to 55 °C. The DC control voltage powers the internal electronics and fieldbus interface. The 9-pole power connection handles the main circuit wiring via tab terminals — a standard fast-on connection that mates with matching receptacles on the ET 200X base unit.
Deployment context
This starter mounts directly onto an ET 200X distributed I/O station — it is not a stand-alone DIN-rail component. The 134 mm depth, 140 mm width, and 270 mm height define the envelope that projects from the ET 200X base; panel builders must account for that protrusion when laying out the enclosure depth and cable-entry zones. The IP65 rating means the assembly is sealed against dust ingress and low-pressure water jets, so it can live on the machine frame rather than in a central cabinet.