The Siemens 3RK1315-6NS71-3AA0 is a SIRIUS reversing motor starter — a self-contained unit that handles forward/reverse control of a three-phase motor in a single enclosure. Power supply is 24 V DC nominal (20.4 to 28.8 V range), with a maximum permissible voltage of 31.6 V. The unit communicates via AS-Interface protocol — no PROFIBUS or PROFINET onboard — and includes 4 digital inputs for local control signals. Main circuit connection uses a HAN Q4/2 plug per ISO 23570; device addressing is through an M12 plug.
Mounts via screw fixing in vertical, horizontal, or flat orientation — the recommended position is horizontal. Dimensions are 294 mm wide, 215 mm high, 159 mm deep. Rated for pollution degree 3 (industrial environments with conductive or dry non-conductive pollution). Vibration resistance is 7 mm / 2g; shock resistance is 12g for 11 ms.