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, tapping, Connection technology: Screw terminals, Note: Also suitable for motors of efficiency class IE3, Rated operating current AC-3 380 V 400 V: Ie= 7 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 Three-phase motors 50 - 60 Hz AC-3 220 V 230 V: P= 2.2 kW, 380 V 400 V: P= 3 kW, 660 V 690 V: P= 3.5 kW, max. rated operating power three-phase motors 50 - 60 Hz AC-4 220 V 230 V: P= 1 kW, 380 V 400 V: P= 2.2 kW, 660 V 690 V: P= 2.9 kW, contact configuration S = normally open: 2 S, contact configuration Ö = normally closed: 2 Ö, notes: switching elements in accordance with EN 50012., with mirror contact., current type AC/DC: alternating current operation