The front of the contactor carries an IP20 rating, while the terminals themselves are rated IP00, meaning the wiring zone is exposed and requires enclosure-level protection against dust and moisture. Main current circuit connections use screw-type terminals accepting 2x (0.75 to 25 mm²) stranded or 2x (0.25 to 2.5 mm²) solid wire. The auxiliary/control circuit accepts 2x (0.75 to 16 mm²) solid or stranded. Pollution degree 3 applies, so maintain at least the clearance distances specified for conductive environments.
Motor Ratings and Duty Cycles
This contactor is rated for AC-2 duty at 15 kW on a 400 V supply, which covers slip-ring motor starting and reversing applications. For AC-3 duty (squirrel-cage motor starting), it carries 18.5 kW at 500 V and 10 kW at 690 V. The AC-1 resistive load rating is not directly stated in kW, but the mechanical switching frequency limits are: 1200 cycles/hour for AC-1, 750/h for AC-2, 1000/h for AC-3, and 250/h for AC-4 (plugging/inching). Auxiliary contact ratings are specified at multiple voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V. These cover typical control-circuit loads across common control voltages. Coil operating range is 0.8 to 1.1 times rated voltage at 50 Hz, and 0.85 to 1.1 at 60 Hz.