It is rated for 5.5 kW at 400 V in AC-2 duty (slip-ring motor starting) and 8.5 A at 400 V in AC-4 duty (plugging/reversing/inching). The contactor also carries a 10 A rating at 24 V for resistive or general-purpose loads (AC-12).
Depth is 111 mm, which matters when the panel door or gland plate is tight.
The AC-4 rating of 8.5 A at 400 V is the more demanding duty — plugging, reversing, or inching — and that 8.5 A figure is the one to watch for high-cycle applications. The operating range is 0.8 to 1.1 times rated voltage at 50 Hz, and 0.85 to 1.1 at 60 Hz, so it holds in on a sagging line.
Main circuit terminals accept solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). AWG equivalents for main contacts are 2x (20 to 16), 2x (18 to 14), or 1x 12. Auxiliary contacts use the same AWG range. Both main and control circuits use screw-type terminals — no spring-cage here.
Environmental and life data
Mechanical life is typical 30 million operations — that is the mechanical endurance, not the electrical life under load. Electrical life will be lower and depends on the switching duty (AC-2 vs AC-4 vs AC-12).