Side-by-side mounting is permitted, so a multi-contactor motor starter group packs tight on the rail without forced spacing. IP20 on the front with the cover or box terminal installed; the terminal area itself is IP00 — plan for enclosure protection if the panel is washdown-rated.
At 230 V and 60 °C ambient, the contactor handles 42 kW, which is the practical motor-load rating for this Size S3 frame. Coil draws 10 A at 24 V rated value, 6 A at 230 V, 3 A at 400 V — these are the inrush or holding currents depending on the control circuit design. Mechanical life typically 10,000,000 operations; electrical life at AC-1 maximum 1,000,000 operations per hour — the mechanical figure governs wear in lightly loaded switching, while the electrical figure drops under full motor load.