The CV1BK3K0ZM511 is a TeSys B contactor from Schneider Electric's TeSys range, a 3-pole unit rated for 630 A in AC-3 duty at 690 V AC. That AC-3 category means it's designed for starting and stopping squirrel-cage induction motors under load — the standard use case for motor control in industrial panels. The 630 A AC-3 rating is the headline figure for motor switching. For resistive or heating loads (AC-1 category), the contactor can carry higher current, but the 630 A AC-3 number is what governs motor sizing. The coil pulls 220 V AC at 50 Hz, so it's a direct fit for European-standard control circuits.
The 3 NO main poles handle the motor power circuit; the built-in 1 NO + 1 NC auxiliary contact block provides feedback or interlocking without an add-on module. For a 630 A motor branch, you'll want to coordinate the upstream short-circuit protection (MCCB or fuse) to match the contactor's making and breaking capacity.