The 4 NO configuration gives you four independently switched poles, useful for multi-phase motor control or distributing a single supply across several loads.
Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded wire, or 2x (24 to 14 AWG). No screw torque to check — push the wire in, done. That saves time on a panel build and holds firm under vibration. The control circuit (coil) terminals are also IP20-rated, same as the front.
Environmental and approvals
Altitude rating up to 2 000 m without derating. The contactor carries a mechanical endurance of 30 million operating cycles typical — that's the mechanical life of the armature, not the electrical life under load (which depends on switching current and voltage).