The interrupting ratings tell the real story: 121 kA at 240 V AC, dropping to 75.6 kA at 415 V, then 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–). At 415 V it still clears 75.6 kA — enough for most industrial main feeders.
The 32 A rating holds flat from 40 °C to 50 °C, then drops only 1 A per 5 °C step: 31 A at 55 °C and 60 °C, 30 A at 65 °C and 70 °C (–). That's a shallow derating curve — useful when the MCCB sits in a warm enclosure alongside other heat sources. The 101.6 mm width is a standard 4-inch frame — fits common DIN-rail or panel-mount footprints without surprises.