The interrupting capacity hits 75.6 kA at 240 V and still delivers 52.5 kA at 415 V — enough for most industrial feeder and sub-feeder applications where fault current is high.
The interrupting curve drops from 75.6 kA at 240 V to 32 kA at 440 V, then to 7.5 kA at 500 V and 690 V — so at higher line voltages the available fault current the breaker can clear is lower. That matters for selectivity studies: if your transformer secondary delivers 50 kA at 480 V, this breaker's 32 kA at 440 V (interpolated) may not be enough; step up to the 3VA1110 frame.