The Siemens SIRIUS 3RK1395-6KS41-0AD5 is a direct motor starter in the SIRIUS product brand, designed for starting three-phase motors up to 0.75 kW at 400 V and 1 hp at 575/600 V. It is a self-contained unit with a 24 V DC control supply (rated range 20.4–28.8 V) and IP65 protection, meaning it can be mounted directly on the machine or in a washdown area without an additional enclosure. The starter offers selectable trip classes 5, 10, 15, and 20, so you can match the overload protection to the motor's starting profile — class 5 for short acceleration times, class 20 for high-inertia loads like fans or centrifuges.
The 24 V DC supply is the control voltage for the internal electronics and coil — not the motor power. The motor power circuit connects via a HAN Q4/2 plug (ISO 23570), so panel wiring is a simple plug-in rather than hardwiring through a terminal block. The 4 digital inputs and 2 digital outputs allow the starter to accept start/stop and feedback signals directly, eliminating a separate I/O block for simple direct-on-line applications.