What this MCCB delivers
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. Rated insulation voltage is 800 V, and the breaker carries a maximum power loss of 19.2 W. Operating temperature spans -25 °C to 70 °C, with storage from -40 °C to 80 °C.
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. In a warm enclosure — say a panel running 55 °C ambient — you lose 2 A; at 70 °C you lose 6 A. That's predictable and linear enough to size without over-specifying.
Breaking capacity across voltages
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. The 7.5 kA at 690 V tells you this breaker is not intended for 690 V main feeders; it's a downstream device at that voltage.