The CV1BH3H0ZM511 is a 3-pole contactor from the TeSys B range, rated for 300 A AC-3 at 690 V AC — that's the motor-switching current, not the resistive rating. The 220 V AC 50 Hz coil pulls in clean on standard control transformers. Auxiliary contacts are 1 NO + 1 NC, enough for a holding circuit and a feedback signal without adding a side-mount block.
The 300 A AC-3 rating means this contactor handles motor starting duty up to that current — inrush and break. Coil is 220 V AC 50 Hz; make sure your control voltage matches before wiring. Pole composition is 3 NO, so it switches three phases. No built-in aux on the power poles — the 1 NO + 1 NC auxiliary pair is separate and rated for the control circuit.