At 690 V AC-3, the rating drops to 10 kW, reflecting the higher voltage stress on the contacts. For AC-2 duty (slip-ring motors, soft-start applications) at 400 V, the rating is 15 kW. The coil is rated for 50 Hz, 110 V. The auxiliary contact block carries 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — typical for signaling back to a PLC or relay interface.
Terminals accept solid conductors up to 2x 4 mm² per clamp, and stranded conductors up to 2x 25 mm². The minimum permissible cross-section at 40 °C is 16 mm², which sets the smallest wire size for full rated current without overheating the termination. The enclosure is rated IP20 on the front (finger-safe), while the terminal area is IP00 — meaning the terminals are exposed and require the panel enclosure to provide the overall protection.
The part carries the SIRIUS brand, Siemens' standard industrial control product family.
Switching performance and mechanical endurance
The contactor is rated for 10 million mechanical operations typical. Electrical switching frequency: 1,200 cycles/hour at AC-1, 1,000 cycles/hour at AC-3, 750 at AC-2, and 250 at AC-4.