Safety contactor for motors, complete devices up to 170 A. Utilisation category: AC-1 for non-inductive or weakly inductive loads, resistance furnaces; AC-3 for squirrel cage motors: starting and switching off while running; AC-4 for squirrel cage motors: starting, counter-current braking, reversing, and inching. Connection technology: screw terminals. Note: Also suitable for motors of efficiency class IE3; IE3-compatible devices are labelled with the logo on the packaging.

Description: Features two electronically compatible microswitches (1 S + 1 Ö) with an auxiliary switch module permanently connected to the basic device (manual operation not possible). Rated operating current AC-3 at 380 V/400 V: Ie = 25 A. Rated operating current AC-1 conventional thermal current, 3-pole, 50 - 60 Hz open at 40 °C: Ith = Ie = 45 A; encapsulated: Ith = 36 A. Rated operating current AC-1 conventional thermal current 1-pole open: Ith = 100 A; encapsulated: Ith = 90 A.

Max. rated operating power for three-phase motors (50 - 60 Hz) AC-3: 220 V/230 V: P = 7.5 kW; 380 V/400 V: P = 11 kW; 660 V/690 V: P = 14 kW. Max. rated operating power for three-phase motors (50 - 60 Hz) AC-4: 220 V/230 V: P = 3.5 kW; 380 V/400 V: P = 6 kW; 660 V/690 V: P = 8.5 kW.

Contact configuration: S = NO contact: 2 S; NC = NC contact: 3 NC. Notes: Switching elements according to EN 50012, integrated protective circuit in the control electronics, with mirror contact (not for microswitches). Current type: AC/DC with direct current actuation.