Panel fit and mounting — S00 form factor on DIN rail
The 3RA2317-8XB30-2AB0: This is a Siemens SIRIUS reversing contactor assembly, size S00, built around two 3RT2017-2AB02 contactors mechanically interlocked for forward/reverse motor control. The footprint is 90 mm wide, 84 mm high, and 83 mm deep, so it occupies roughly the space of two S00 contactors side-by-side plus the interlock bridge — plan for that width when laying out DIN rail segments.
Motor ratings and duty — what the numbers mean for the load
For AC-4 duty (plugging, inching, reversing under load), the rating drops to 4 kW at 400 V — this is the more demanding case because the contactor opens under full motor current, so size the assembly for AC-4 if the application involves frequent reversing or jogging.
The supplied contactors are standard 3RT2017-2AB02 units, so spares and replacement coils are widely available. The assembly itself is a single orderable part number, simplifying procurement for a matched interlocked pair.