The 220-240 V 50 Hz coil pulls in reliably with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz — meaning it picks up at about 176 V and holds in through line sags down to that same threshold. Dropout is around 0.8 times initial value, so below roughly 176 V the contactor opens cleanly. For motor duty, the contactor is rated at 160 kW at 500 V — that's the AC-3 switching capability for a three-phase induction motor. The auxiliary contact block handles 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, so it can drive small relays or PLC inputs directly.
Mounts via screw fixing — four 11 mm holes on the base plate. That 20 mm forward gap is the one that catches people out when the panel door or a busbar shroud is tight. The coil uses screw-type terminals, so no special crimp tool needed for the control wiring. Main power terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) — that's two conductors per clamp, which is handy for daisy-chaining line or load side without extra terminal blocks. Strip length and torque follow standard Siemens practice for this frame size.
Environmental and switching performance
Switching frequency: 750 cycles/hour max under AC-1 resistive load, 500 cycles/hour under AC-3 motor load, and 130 cycles/hour under AC-4 plugging/reversing duty.