The terminal area itself is IP00, meaning the wiring zone is open to the enclosure environment, so the panel must maintain its own IP rating around the gland plate.
For inching or plugging duty (AC-4 at 400 V), the rated operational current drops to 15.5 A, which is the current it can switch repeatedly without welding the contacts. If your application is a standard squirrel-cage motor start/stop (AC-3), the 11 kW figure is conservative; the contactor will handle that load class without issue, but the AC-2 number is the certified one on the nameplate. The main contacts are 3-pole normally open — no NC pole on the main circuit. That's typical for a line contactor where you want fail-safe disconnection on all three phases. The auxiliary contact block is separate (not included), so if you need a mirror contact or early-make signal, you'll add a side-mount block.
For AWG, that's 16 to 10 AWG per clamp, with a single 8 AWG max. The terminal design is the standard box lug — strip length around 10 mm, torque to the value on the contactor label. For Type 2 coordination (no weld, contactor stays operational after a short circuit), the fuse must be limited to 35 A gL/gG. That's a significant difference — if your panel spec calls for Type 2, the 35 A fuse is mandatory, and the upstream breaker must coordinate with it.