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

Description: The contactor includes two electronically compatible microswitches (1 S + 1 Ö) and an auxiliary switch module permanently connected to the basic device (manual operation not possible). Rated operating current AC-3 at 380 V and 400 V: Ie = 9 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.

Maximum rated operating power for three-phase motors at 50 - 60 Hz AC-3: 220 V and 230 V: P = 2.5 kW; 380 V and 400 V: P = 4 kW; 660 V and 690 V: P = 4.5 kW. Maximum rated operating power for three-phase motors at 50 - 60 Hz AC-4: 220 V and 230 V: P = 1.5 kW; 380 V and 400 V: P = 2.5 kW; 660 V and 690 V: P = 3.6 kW.

Contact configuration: S = NO contact: 2 S; NC = NC contact: 3 NC. Notes: Switching elements according to EN 50012, with mirror contact (not for microswitches). Current type: AC/DC with AC actuation.