For AC-4 (plugging/reversing/inching) at 400 V, the rated operational current drops to 8.5 A, reflecting the heavier switching duty. That's the number to check if your application does frequent reversing or jogging. Coil switching capacity is given at multiple DC voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. These are the auxiliary contact ratings for the DC control circuit — useful when you're feeding the coil from a PLC output or a remote pushbutton station. The built-in varistor surge suppressor handles the inductive kick on coil dropout, so you don't need an external flyback diode.
Both main current circuit and auxiliary/control circuit use spring-loaded terminals — no screw torque to check, no vibration loosening. They accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). Strip length is standard 8–10 mm for spring-cage. The S00 frame terminals are laid out for straightforward panel wiring; the 45 mm width leaves room for finger duct alongside.
Protection coordination
These are the values to hand to the panel builder for the short-circuit protection schedule. The contactor itself has a mechanical life of 30 million operations typical — not a wear item in normal cycling.