The Siemens SIRIUS 3RK1325-6LS41-0AA5 is a direct motor starter in a fully enclosed IP65-rated housing, designed for standalone or distributed installation in washdown or dusty environments. It delivers up to 5.5 kW at 400 V and 7.5 hp at 460/480 V, with selectable trip classes 5, 10, 15, or 20 to match motor protection curves to load type. Communication is via AS-Interface protocol, with addressing through an M12 plug — no PROFINET or PROFIBUS onboard. The unit accepts 24 V DC nominal supply (20.4 to 28.8 V) and includes four digital inputs for local control signals.
The housing measures 294 mm wide, 215 mm high, and 159 mm deep, mounting via screw fixing in vertical, horizontal, or flat orientation. Trip class selection lets you tune the overload curve: Class 5 for fast-starting loads like pumps, Class 10 for general-purpose, Class 15 or 20 for high-inertia fans or conveyors. Shock rated at 12g / 11 ms and vibration at 7 mm / 2g — figures that confirm it survives on-machine mounting near vibrating equipment without nuisance trips.