Its interrupting capacity reaches 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving you solid fault-clearing headroom for industrial distribution panels where high available fault currents are a concern. At 440 V the interrupting rating drops to 52.5 kA, and at 500 V or 690 V it holds at 11.9 kA — still respectable for most motor-control-center applications. The 80 A rating holds steady from 40 °C up to 50 °C; above that it derates gradually to 74 A at 70 °C, so factor in your enclosure's internal temperature rise when sizing.
Integration and fit notes
The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep — a standard footprint for SENTRON 3VA frames. Front IP40 protection means it's suited for enclosed panel mounting where dust ingress is limited.