It holds that rating flat through 50 °C — at 55 °C it derates to 243.3 A, and at 70 °C it's still good for 223 A. That thermal curve means you don't lose headroom until the panel ambient pushes past 50 °C. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. An undervoltage release (UVR) is fitted as standard — part number 3VA9608-0BB25 for the integrated auxiliary trip. No auxiliary contact block is included; that's a separate add-on if you need remote status.
That 140 mm width is a 4-pole frame — it'll take up four module spaces on a DIN rail if you're using a mounting plate adapter. N-conductor protection is set at 50% of the phase rating.