What this MCCB does on the line
Breaking capacity runs 75.6 kA at 240 V AC, 52.5 kA at 415 V, and 32 kA at 440 V — numbers that tell you this breaker handles high available fault current on a 240/415 V distribution bus without needing a current-limiting fuse upstream. IP40 front protection keeps tools and fingers out.
The 40 A rating holds flat from 40 °C to 50 °C, then derates to 39 A at 55–60 °C and 38 A at 65 °C, 37 A at 70 °C — so in a warm panel (say 55 °C ambient) you lose only 1 A, but at 70 °C you're down to 37 A continuous. Maximum power loss is 10.8 W. Operating range is -25 °C to 70 °C; storage range -40 °C to 80 °C — fine for unheated warehouses as long as the breaker is not energized below -25 °C.
The part is specified into new panels across the 3VA platform.