Rated 80 A continuous from 40 °C through 50 °C, it derates to 74 A at 70 °C; that thermal curve is the one that governs real panel loading, not the 80 A nameplate.
Breaking capacity — what voltage is on your bus?
Breaking capacity climbs with bus voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V.
Width 76.2 mm (3 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). Standard 3-pole MCCB footprint — mounts on DIN rail, no special bracket. The 70 mm depth keeps it clear of shallow enclosure doors; check gland-plate clearance if the panel is pre-wired.