Short-circuit ratings that matter for coordination
The 3VA1116-4EF32-0AA0: This breaker carries an interrupting capacity of 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Those are the numbers you hand to the arc-flash study — the 415 V figure is usually the one that governs selectivity in European 400 V distribution panels.
Thermal derating — the real ampacity
Rated 160 A from 40 °C through 50 °C, then it steps down: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. If the panel ambient sits at 55 °C, you lose 2 A — not much, but worth confirming if you're running the bus right at the limit. The maximum power loss is 38 W, which matters for thermal rise inside a sealed enclosure.
The IP40 on the front is typical for panel-mount; no IP rating on the body sides, so keep it inside the enclosure.
Marked as current production — no LTB or NRND flag. That means you can spec it into a new BOM without worrying about a last-time-buy window closing mid-project.