The coil is rated for 400 V at 50 Hz and 400–440 V at 60 Hz, so it's a direct line-voltage coil — no control transformer needed if your panel feeds 400 V three-phase. For AC-3 duty (squirrel-cage motors, the more common standard), the current rating will be higher — the AC-2 figure is the conservative one for slip-ring or high-inertia starts. The S0 frame is compact at 61 mm wide, 85 mm tall, and 91 mm deep — fits a standard 8-module row with room for auxiliaries.
The 4 NO main contacts handle 10 A in AC-12 duty (resistive loads like heaters) and the motor-rated currents at 400 V. The terminal block accepts up to 2x 10 mm² stranded or 1x 12 AWG, which is generous for a contactor this size — you can land two motor cables per phase without a separate distribution block. Type 1 coordination requires a 63 A gL/gG fuse upstream; Type 2 coordination (for reduced damage on fault) needs a 35 A fuse. That's the selectivity headroom to plan for in your distribution board.