The Siemens 3RK1395-6LS71-1AD3 is a SIRIUS reversing starter rated for 5.5 kW at 400 V AC, with a trip class selectable among CLASS 5, 10, 15, or 20. The unit provides 4 digital inputs and 2 digital outputs for local control and status feedback.
The 5.5 kW rating at 400 V (12 A) covers most standard 3-phase induction motors in that power class — pumps, fans, small conveyors. The selectable trip class (5, 10, 15, or 20) lets you match the overload protection to the motor's starting characteristics: Class 5 for submersible pumps or high-inertia loads that need fast trip, Class 20 for soft-start or long acceleration profiles.
The starter measures 294 mm wide, 215 mm high, and 148 mm deep. It is fastened via screw fixing and can be mounted vertically, horizontally, or flat. The main circuit connection uses a plug according to ISO 23570 (HAN Q4/2), which simplifies pre-wiring and replacement.