Three poles, 100 A continuous at 40 °C all the way up to 70 °C (no derate needed in that band), and a breaking capacity that starts at 330 kA at 240 V and drops to 242 kA at 415/440 V, then 187 kA at 500 V, and 3.7 kA at 690 V.
The 100 A rating is flat across the full 40–70 °C ambient range, so you don't lose headroom in a hot enclosure. That's unusual and saves you from having to oversize the frame just because the panel runs warm.
That means you get remote trip capability and status feedback without adding external modules. The basic switch order code is 3VA21107MS360AA0 — useful if you're ordering spare switch blocks separately.