SIRIUS reversing starter — 12 A, IP65, with I/O
The Siemens 3RK1395-6LS71-3AD3 is a SIRIUS reversing motor starter rated 12 A at 400 V AC, good for 5.5 kW at 400 V or 7.5 hp at 460/480 V. It's built as a reversing starter — meaning it can switch a motor's direction without an external contactor interlock — and carries trip classes 5, 10, 15, and 20, so you can match the overload protection to the motor's start profile. The IP65 enclosure lets it mount directly on the machine frame or in a washdown zone without a separate cabinet.
What the ratings mean for fit
Control supply is 20.4 to 28.8 V DC — standard 24 V DC nominal with a decent tolerance band. The main circuit connects via a HAN Q4/2 plug per ISO 23570, so panel wiring is a pre-terminated cable assembly, not individual lugs. Screw fixing to the mounting surface; the unit can be mounted vertical, horizontal, or flat, which helps in tight enclosures.
Where it goes — deployment context
This is a reversing starter with IP65 protection, so it's meant for distributed motor control right at the machine — conveyors, hoists, mixers, or any application needing forward/reverse without a separate reversing contactor pair. The IP65 rating means the housing and the HAN connector withstand hose-down cleaning, making it a fit for food-and-bev, packaging, or automotive assembly lines. The 148 mm depth and 294 mm width give you the envelope for panel layout; the screw-fix mounting and multiple orientation options simplify installation in existing stands or machine frames.