The 80 A rating holds flat from 40 °C through 50 °C; above that it derates to 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. Interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. Three poles, line protection version, no communication module, no phase-failure detection, no ground-fault monitoring. An undervoltage release (UVR) is built in — that's the entry. If the control voltage drops, the breaker opens; useful for emergency-stop circuits that need a loss-of-voltage trip. Mechanical endurance is 15 000 operations. That's typical for a panelboard feeder breaker that cycles a few times a year; not a high-duty machine-tool disconnect. The front face carries a trip indicator so a walk-by can see which breaker opened without pulling the door.
That 76.2 mm width is three 25.4 mm pole spaces — standard for a 3-pole MCCB on a DIN rail or panel-mount footprint. IP40 on the front; the body is not sealed for washdown, so keep it in a dry indoor panel. The integrated auxiliary trip is order code 3VA9608-0BB11 — that's the factory-fitted alarm switch, not a field-installable kit. If you need a different auxiliary configuration, order the base breaker without auxiliaries and add the correct 3VA9 accessory separately.