The coil is rated at 24 VDC with a holding power of 5.4 W — that's the steady-state draw the PLC output or relay must sink. Closing and holding power are identical at 5.4 W, so there's no inrush spike to trip a marginal 24 VDC supply. The contactor carries a maximum operating current of 10 A under AC-12 duty (resistive loads), and at 24 V rated value it switches 10 A in DC circuits. For motor duty, it's rated at 4 kW at AC-2 at 400 V, and 8.5 A at AC-4 at 400 V for reversing or inching applications.
That's a practical difference: if the upstream protection is sized for Type 1, the contactor is sacrificial in a fault event.
Integration notes
The contactor carries a mechanical endurance of 10 million typical operations — that's the rated life before the mechanism wears, not the electrical life under load. Electrical life depends on the switched current and duty cycle; for resistive loads at rated current it will be lower than the mechanical figure. Terminal wiring: the main circuit accepts solid conductors 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). For stranded conductors, it accepts 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), max 2x 10 mm². AWG equivalents are 2x (16 to 12), 2x (14 to 10), 1x 8. Strip length and torque spec aren't in this record, but the terminal type is screw-type, so use a torque screwdriver per Siemens installation instructions.