Siemens SENTRON 3VA1080-2ED36-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated 80 A at 40 °C, with a maximum breaking capacity of 52.5 kA at 240 V. It's configured for line protection and includes a shunt trip (STL) release plus two auxiliary switches and one trip alarm switch (HQ). The insulation voltage is rated 800 V, and maximum power loss is 19.2 W.
Breaking capacity and thermal derating
Breaking capacity drops from 52.5 kA at 240 V to 32 kA at 415 V, then to 13.6 kA at 440 V, and further to 7.5 kA at both 500 V and 690 V. The thermal rating holds at 80 A up to 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 derating curve is what you use for panel ambient — don't size by the 40 °C number alone if your enclosure runs hot.
Panel integration and fit
Dimensions are 70 mm depth, 76.2 mm width (standard 3-pole MCCB footprint), and 130 mm height. The trip indicator and voltage trigger are present; undervoltage release is not fitted. Communication function is absent — this is a standalone thermal-magnetic breaker, not a networked unit.