Eaton EATO safety contactor

Safety contactor for motors, suitable for complete devices up to 170 A. Utilisation categories include AC-1 for non-inductive or weakly inductive loads and resistance furnaces, AC-3 for squirrel cage motors during starting and switching off while running, and AC-4 for squirrel cage motors during 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-capable devices marked with a logo on the packaging.

The auxiliary switch module is non-detachably connected to the basic device, and manual operation is not possible. The rated operating current for AC-3 at 380 V and 400 V is Ie = 12 A. The rated operating current for AC-1 conventional thermal current is as follows: 3-pole, 50 - 60 Hz open at 40 °C: Ith = Ie = 22 A; encapsulated: Ith = 18 A; 1-pole open: Ith = 50 A; encapsulated: Ith = 45 A.

Maximum rated operating power for three-phase motors at 50 - 60 Hz AC-3 is 220 V 230 V: P = 3.5 kW, 380 V 400 V: P = 5.5 kW, and 660 V 690 V: P = 6.5 kW. For AC-4, the maximum rated operating power is 220 V 230 V: P = 2 kW, 380 V 400 V: P = 3 kW, and 660 V 690 V: P = 4.4 kW.

Contact configurations include 2 normally open contacts and 3 normally closed contacts. Additional notes include switching elements according to EN 50012, an integrated varistor protection circuit, a mirror contact, and direct current actuation capability.