Its breaking capacity hits 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — so the interrupting rating drops fast as line voltage climbs; at 690 V it's still a solid 11.9 kA, but don't spec it for high-voltage high-fault panels without checking the curve.
At 55 °C it derates to 19.2 A, at 60 °C to 18.8 A, at 65 °C to 18.4 A, and at 70 °C to 18 A.
That 76.2 mm width is three standard 25.4 mm pole pitches — it'll drop into a 3-pole MCCB slot on a DIN rail or panel-mount base without surprises. A shunt trip (STL) is built in; the integrated auxiliary trip uses a separate order code 3VA9688-0BL33 for the release module itself. Front-face protection is IP40 — fine for a clean panel, not for washdown.