The CV1BJ2J0ZM522 is a TeSys B contactor with two main poles, each normally open, rated for 470 A in AC-3 duty at 690 V AC. AC-3 means it is designed for switching squirrel-cage motors — making and breaking motor starting currents. The same contactor also carries an AC-1 rating for resistive loads like heating or lighting circuits, where the switching current is essentially the load current with no motor inrush. The control coil is rated 220 V AC at 50 Hz. The contactor includes two normally open and two normally closed auxiliary contacts for feedback or interlocking in the control circuit.
The headline number is 470 A at 690 V AC in AC-3. That is the motor-switching rating — the current the main poles can make and break under motor start conditions. The 2-pole configuration limits it to single-phase or DC switching applications. The 220 V AC coil means it integrates into a control transformer secondary or existing 230 V control bus. The auxiliary contact complement (2 NO + 2 NC) is generous for a contactor of this size — enough for a holding circuit plus two status feedbacks without an add-on block.
The 2-pole body is narrower than a 3-pole equivalent, saving rail space in panels where only single-phase or DC motor switching is needed. The auxiliary contacts are built-in, so no separate side-mount block is required for basic feedback. The main power terminals accept cable lugs sized for 470 A — expect M10 or M12 studs, verify against the product datasheet for lug dimensions.