Its interrupting capacity reaches 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that place it in the high-breaking class for industrial feeder and distribution panels.
Ratings and thermal behaviour
The 40 A rating holds steady from 40 °C to 50 °C, then derates to 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C. That means in a warm panel — say 55 °C ambient — the breaker still handles 39 A continuous without nuisance tripping.
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — fits standard 3-pole MCCB panel cutouts. The supplied basic switch is 3VA11406EF360AA0.