The Siemens SIRIUS 3RK1395-6KS71-1AD5 is a reversing motor starter in a fully enclosed IP65 housing — built for direct-on-line reversing of three-phase motors up to 0.75 kW at 400 V or 0.7 hp at 460/480 V. It runs on a 24 VDC control supply (20.4…28.8 V range) and offers selectable trip classes 5, 10, 15, and 20, so you can match the overload protection to the motor start profile. The enclosure is screw-fixed, rated IP65, and sized at 294 mm wide × 215 mm high × 148 mm deep.
The 2 A at 400 V AC rating is the continuous current the main contacts handle in AC-3 motor duty — sized for the 0.75 kW / 0.7 hp motor listed. The trip class selector lets you set overload response: Class 5 for quick-start, low-inertia loads (conveyors), Class 10 for standard motors, Class 15 or 20 for high-inertia starts (fans, centrifuges). The 24 VDC control supply is the standard PLC-level voltage, so it drops into a 24 V cabinet without a separate control transformer.