The key motor rating here is 5.5 kW at both 400 V and 690 V under AC-3 duty, which covers the majority of standard induction motor applications. For reversing or plugging duty, the AC-4 rating is 8.5 A at 400 V — that's the number to watch for high-inertia loads or frequent reversing cycles. The pickup voltage is 0.85 x rated (20.4 VDC) and dropout is 1.1 x rated (26.4 VDC), meaning it holds in during brownouts down to about 20 V.
The screw terminals accept 2 x (0.5 to 1.5 mm²) or 2 x (0.75 to 2.5 mm²) solid/stranded, with a max of 2 x (0.75 to 4 mm²). For AWG, that's 2 x (20 to 16) or 2 x (18 to 14), plus a single 12 AWG.
Compliance documentation (RoHS, REACH, CE, UL) is available from Siemens for this active part — standard for any SIRIUS contactor shipped into EU or North American markets.
Auxiliary contacts and coordination
One instantaneous auxiliary contact is built in (1 NO/NC configurable). Its switching capacity at 24 V is 10 A, dropping to 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — typical for a standard auxiliary block. For Type 1 coordination, use a 35 A gL/gG fuse; for Type 2, a 20 A gL/gG fuse protects the contactor against weld-on faults.