The AC-3 maximum switching frequency of 750 1/h (and the same for AC-3e) sets the thermal limit for motor starting — stay under that to avoid contact welding. For resistive loads (AC-1), it can manage 1 000 1/h. The AC-4 rating drops to 250 1/h, reflecting the higher arc energy of inching or plugging duty. The coil draws 0.25 A at 50 Hz and 0.28 A at 60 Hz, which is within the typical 24 VDC supply budget for a small panel. Terminal capacity: solid or stranded wire from 1 to 10 mm², and dual-wire capability for 2x (0.5 to 2.5 mm²). That covers most control-circuit wiring without needing ferrule adapters. The spring-type terminals reduce installation time — no screw tightening, just strip and push.
The contactor measures 45 mm wide, 102 mm high, and 144 mm deep — the depth is the dimension to watch when planning gland-plate clearance or enclosure depth. This helps when retrofitting into an existing panel where the rail isn't perfectly aligned.
Operating conditions and mechanical life
Typical mechanical life is 10 000 000 operations.