That is not a typo — this is a current-limiting MCCB designed for installations where available fault current is extreme, typically downstream of large transformers or in heavy industrial switchgear. At 415 V it still clears 242 kA, and at 690 V it holds 17 kA, which covers most 690 V industrial networks.
At 55 °C it derates to 313 A, at 60 °C to 306 A, at 65 °C to 299 A, and at 70 °C to 292 A. Power loss at rated load is 80.1 W maximum — relevant for enclosure thermal calculations, especially in a sealed or high-density panel.