The Siemens 3RA1317-8XB30-1AB0 is a reversing contactor assembly from the SIRIUS family, Size S00, with a 24 V AC coil rated for both 50 Hz and 60 Hz. It is a 3-pole unit with screw-type terminals for the main current circuit, delivering 5.5 kW at 400 V in AC-3 duty — the standard motor-switching category per IEC 60947-4-1, meaning it handles the inrush and breaking of squirrel-cage motors up to that power. The 12 A operational current at AC-3 at 400 V is the figure to match against your motor FLA.
The 90 mm width and 72 mm depth fit a standard panel layout; IP20 protection on the front means it is intended for enclosed installation, not exposed washdown areas.