This is a straight line-protection breaker: you feed it, it protects, no auxiliary brains. Breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
Above that it derates: 384 A at 55 °C, 376 A at 60 °C, 368 A at 65 °C, 360 A at 70 °C. The 138 mm width across three poles is standard for this frame size — it occupies one 138 mm-wide slot in a SENTRON distribution panel or a standalone enclosure. Maximum power loss is 63.5 W; factor that into your enclosure thermal budget if you're stacking several breakers.
Auxiliary contacts and lifecycle
The auxiliary release slot is empty; if you need a shunt trip or UVR, you'd order a different suffix.