The CV1BK0Z1KMR10J is a TeSys B DC-3 contactor rated for 630 A AC in the power circuit at 690 V AC, with a 220 V DC coil.
The 630 A rated operational current (Ie) in AC-3 duty means it handles motor starting and running currents up to that level — a critical spare for a high-current motor feeder. The 220 V DC coil is a specific control voltage; verify your control transformer or DC supply matches before wiring in. Auxiliary contacts are one instantaneous 1 NO plus one C/O (changeover) on-delay contact — enough for a seal-in and a status feedback, but not a full aux block. If your circuit needs more than two auxiliary poles, plan for an add-on block.
Where this part is used
This contactor belongs in a motor control centre or a large panel feeding a 630 A-rated motor feeder — think pumps, compressors, or conveyors on a 690 V three-phase system. The DC coil means it's intended for a control circuit that already runs 220 V DC, common in some industrial installations or battery-backed schemes.