Rated for AC-3e duty up to 690 V, this contactor delivers 23 kW at 400 V and 40 kW at 690 V (at 60 °C), making it a fit for medium-horsepower motor control in conveyor, pump, and fan applications.
The AC-3e rating at 690 V maximum tells you the contactor is designed for switching squirrel-cage motors under full load — the most common duty for a general-purpose power contactor. The 23 kW at 400 V (60 °C) is the number to match against your motor nameplate. Mechanical life is rated at 10,000,000 operating cycles typical, with AC-3 electrical life at 1,000,000 cycles maximum. For heavy AC-4 duty (plugging, inching), the maximum electrical life drops to 300,000 cycles — factor that into maintenance intervals if your application includes frequent reversing.
Main circuit terminals accept 2x (0.5 to 1.5 mm²) solid/stranded or 2x (0.75 to 2.5 mm²) — or AWG 2x (16 to 12) and 2x (14 to 8). Minimum permissible conductor size is 10 mm² at both 40 °C and 60 °C.
Substance prohibitance date of 05/01/2012 indicates RoHS compliance per the EU directive. No additional compliance documentation (UL, CSA, CE) is listed in the spec record, but as a Siemens SIRIUS product it typically carries those marks — verify against your local requirements.