Its spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded wire.
These are the numbers that govern real motor switching, not the thermal continuous current. If your application is AC-3 (start/run), you interpolate between these; the AC-4 figure is the lower bound because it includes the most contact wear. Short-circuit coordination requires a gL/gG fuse: 20 A for Type 2 (no damage to the contactor), 35 A for Type 1 (contactor may need replacement after fault). This is a panel-builder spec — pick the fuse first, then confirm the contactor survives the let-through energy.
That's typical for an unsealed panel — no conformal coating required unless the panel is in a wet area.
Depth is 73 mm, height 60 mm. The spring-loaded terminals are finger-safe (IP20 at the front and at the terminal). Wire range is 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). That covers most control-circuit and small motor leads up to about 2.5 mm². If your motor cable is 4 mm², you'll need a larger contactor frame.