Rated 80 A continuous at 40 °C ambient, it holds that full rating through 50 °C (–), then derates to 74 A at 70 °C. That thermal curve tells you the breaker doesn't need a temperature derate in a standard 40 °C panel, but in a hot enclosure near other heat sources you lose roughly 6 A at the top of the operating range. Breaking capacity is the headline number that decides whether this breaker clears a fault without upstream damage: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 7.5 kA at 500 V and 690 V.
Integration and panel fit
The storage minimum covers cold warehouse conditions; the operating minimum handles unheated plant floors in winter.