The SENTRON 3VA1080-3ED42-0AD0 is a 4-pole molded case circuit breaker rated 80 A at 40 °C, with a TM210 thermal-magnetic overcurrent release designed for line protection. Its interrupting capacity reaches 75.6 kA at 240 V and 52.5 kA at 415 V, which covers most industrial panel fault levels without cascading upstream.
Current derating and thermal behaviour
The 80 A rating holds flat from 40 °C through 50 °C, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That's predictable and linear enough to size without over-specifying.
The interrupting ratings step down cleanly: 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. For a 480 V panel (common in North America) the 32 kA at 440 V is the nearest published figure — expect the actual SCCR at 480 V to sit between the 440 V and 500 V curves.