The Schneider Electric CV3BF1F0ZM500J is a TeSys B series contactor, a single-pole (1P) device rated for 37 kW at 400 V AC under AC-3 duty, which means it is sized for switching three-phase induction motor loads up to that power. Rated operational current is 80 A AC for the control circuit, and the contactor complies with IEC 60947-4 and EN 60947-4 for motor-starting and switching applications.
The AC-1 rating (resistive loads) is also listed, so it handles heating or lighting circuits as well. The IP00 protection rating means it has no enclosure — it is designed for installation inside a control panel where the cabinet provides the physical protection. Rated insulation voltage is 1000 V, giving headroom for 690 V or even 1000 V systems. Mechanical durability is 5 million cycles, which is typical for a general-purpose industrial contactor in this class.
Power circuit terminals accept cable with lug up to 25 mm²; control circuit terminals accept 1 to 6 mm² solid or stranded with the correct ferrule. Tightening torque for power circuit is 9 N·m, for control circuit 1.2 N·m. The contactor's operating time is 40 ms closing, 15 ms opening AC — fast enough for motor sequencing but not for high-speed DC switching. Rated short-time withstand current (Icw) is 800 A for 1 second at 40 °C, which is relevant for coordination with upstream protective devices.