The control coil is 220 V AC at 50 Hz. That is a fixed-voltage coil — no electronic wide-range input — so verify your control transformer taps before wiring. The auxiliary contact block is built in: 2 NO plus 2 NC, giving you feedback and interlocking without an add-on block.
The 470 A AC-3 rating drives the lug and busbar sizing — expect M10 or similar bolt-on power connections, not a spring cage. The 220 V AC coil draws its inrush and hold current from the control transformer; size the transformer for the inrush of all contactors pulling in simultaneously.
