Three poles, rated 20 A continuous at 40 °C, with a breaking capacity of 75.6 kA at 240 V AC — that's the short-circuit current it can safely interrupt without welding or rupturing.
Rated current holds at 20 A from 40 °C up to 50 °C, then derates to 19 A at 60–70 °C (–). That means in a warm panel (say 55 °C ambient), the breaker still carries the full 20 A — no need to oversize. Breaking capacity steps down with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, 11.9 kA at 500 V and 690 V (–). For a 480 V system, the 32 kA at 440 V is the closest published point; the actual SCCR at 480 V will be between 32 kA and 11.9 kA — coordination study needed if fault current approaches that range. No undervoltage release or ground-fault module on this variant.
Integration notes
The 3-pole footprint matches the SENTRON 3VA family — if you're replacing a 3VA1110-5ED36-0AC0, the width and depth are identical; the height is the same 130 mm. No rewiring needed for the line and load lugs, but verify the shunt trip wiring and aux contact assignment against the existing panel schematic.