In a 50 °C panel you derate — typical rule of thumb is about 1% per degree above 40 °C. That puts it in the high-breaking range for a 63 A frame; most distribution panels up to 415 V won't need coordination above this. No earth-leakage protection built in, so if you need RCD functionality you add a separate Vigi module or an external RCCB downstream.
Where it goes in the panel
Mounts on a backplate (not DIN rail — the NSXm uses a screw-fixed backplate mount). 9-module pitch at 81 mm wide, 137 mm high, 80 mm deep. Front connection top and bottom for compression lugs or busbars. IP40 front face means it's splash-resistant on the panel door but not washdown-rated. Horizontal or vertical mounting, flat on the back — no derating required for orientation. The flag indicator shows green when auxiliary contacts are present. Connection pitch is 35 mm with spreaders, 27 mm without.