Power contactor, Application: Power contactor for motors, complete devices up to 170 A, Utilization category: AC-1: Non-inductive or slightly inductive load, resistance furnaces, AC-3: Squirrel cage motors: starting, switching off during operation, AC-4: Squirrel cage motors: starting, countercurrent braking, reversing, inching, Connection technology: screw terminals, Note: Not suitable for motors of efficiency class IE3., Rated operating current AC-3 380 V 400 V: Ie = 15.5 A, Rated operating current AC-1 conventional thermal current, 3-pole, 50 - 60 Hz open at 40 °C: Ith = Ie = 22 A, encapsulated: Ith = 18 A, Rated operating current AC-1 conventional thermal current 1-pole open: Ith = 50 A, encapsulated: Ith = 45 A, max. Rated operating power of three-phase motors 50 - 60 Hz AC-3 220 V 230 V: P= 4 kW, 380 V 400 V: P= 7.5 kW, 660 V 690 V: P= 7 kW, max. Rated operating power of three-phase motors 50 - 60 Hz AC-4 220 V 230 V: P= 2 kW, 380 V 400 V: P= 3 kW, 660 V 690 V: P= 4.4 kW, Contact configuration S = normally open: 2 S, Contact configuration Ö = normally closed: 2 Ö, Notes: Switching elements in accordance with EN 50012., Integrated varistor protective circuit., With mirror contact., Current type AC/DC: DC operation