The auxiliary switch (18... 8 on the main contacts) gives feedback for PLC interlocks or status indication without an add-on block.
Where it lives: panel and environment
Clearances: 10 mm above and below, 10 mm forward, 6 mm to the side.
Duty cycles that matter
Switching frequency depends on the load type: 1 000 operations per hour at AC-1 (resistive), 750/h at AC-2 and AC-3 (motor starting/running), and 250/h at AC-4 (plugging or inching). The AC-3e rating matches the 750/h figure — this contactor is sized for standard motor duty, not high-cycle jogging. Arcing time is a tight 10... 10 ms, so contact wear is predictable.
