At 415 V the interrupting rating drops to 9 kA, which still covers most European industrial secondary-distribution panels.
At 55 °C it derates to 31.04 A, at 60 °C to 31 A, and at 65–70 °C to 30 A. That flat plateau up to 50 °C means no up-sizing for a warm enclosure in most industrial environments — the derating only bites above 55 °C, which is rare inside a ventilated panel. The 25.4 mm width (1 inch) per pole occupies one standard DIN-rail module; the 70 mm depth (2.8 in) and 130 mm height (5.1 in) fit a 200 mm deep enclosure with gland-plate clearance. Front IP40 protects against tool drops during commissioning.