The Siemens SENTRON 3VA1180-5EF36-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated 80 A at 40 °C, with a TM240 thermal-magnetic release.
Rated current holds at 80 A 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 panel — say 50 °C ambient — you still get the full 80 A; above that, the continuous load must be trimmed per the curve. Breaking capacity drops with voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V or 690 V. At 400 V class (415 V) the 121 kA rating covers most industrial switchgear with plenty of headroom for selectivity.
Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth. Fits standard panel-mount cutouts for 3VA frame sizes. The 3-pole width matches existing SENTRON busbar and accessory footprints. The breaker ships with the basic switch 3VA11805EF360AA0 and includes three HQ auxiliary switches.