It is a 4-pole unit rated for 250 A continuous current at 40 °C ambient, with a TM240 thermal-magnetic overcurrent release that gives an adjustable trip range from 1 250 A to 2 500 A (the magnetic instantaneous setting). Breaking capacity is the headline selector here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. The 690 V figure (11.9 kA) is the ceiling for a 690 V line-to-line system; if your panel runs 400/415 V, you have 75.6 kA of interrupting capacity, which covers most industrial service entrances. The breaker dissipates up to 57 W at full load — not negligible in a sealed enclosure; factor that into your thermal budget.
Above that it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C.