What this contactor is rated for
The CV1BL3L0ZM711 is a 3-pole contactor from the TeSys B family, rated for motor switching at 375 kW on a 400 V AC 50/60 Hz supply under AC-3 duty. That AC-3 utilisation category covers starting and stopping squirrel-cage motors — the load current during acceleration and the break current at full speed. For resistive loads (AC-1), the rated operational current is 1000 A; for motor loads (AC-3), it's 700 A.
That's a standard industrial control voltage in many regions — the contactor picks up reliably at that level. The auxiliary contact composition is 1 NO + 1 NC, which gives you one feedback or interlock circuit and one status signal without needing an add-on block for basic applications.
Connections and mounting
Terminals are bolted connection — expect to torque power and control wires to the manufacturer's specification. The contactor is designed for panel mounting; given the 700 A continuous rating, busbar or cable sizing and thermal management in the enclosure need attention. The 3 NO main poles handle the power circuit; no NC main pole is present.