SIRIUS reversing starter — AS-Interface, IP65, Trip Class 10
The Siemens SIRIUS 3RK1315-6LS41-3AA5 is a reversing motor starter rated 5.5 kW at 400 V, with Trip Class 10 overload protection, enclosed to IP65 for washdown environments. It communicates via AS-Interface for control and status, and includes 4 digital inputs for local feedback or auxiliary sensors. The DC supply range is 20.4 to 28.8 V, making it compatible with standard 24 V control systems.
The reversing starter design integrates two contactors mechanically interlocked for forward/reverse control of a single motor, saving panel space versus two separate contactors. Screw fixing with a 159 mm depth and 294 mm width means it needs a clear panel area; mounting can be vertical, horizontal, or flat.
Deployment context
The IP65 enclosure and AS-Interface communication make this starter suited for decentralized motor control in food-and-beverage, packaging, or material-handling lines where the drive point is remote from the main control cabinet. The 4 digital inputs allow connection of limit switches, safety interlocks, or position sensors directly at the starter, reducing field wiring back to the PLC. The ON-delay of 85 ms and OFF-delay of 65 ms are fixed — no field adjustment — so timing-critical sequences must account for these built-in delays.