The Siemens SENTRON 3VA1110-4EF36-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) at 40 °C through 50 °C, with a slight derating curve above that — 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. That thermal profile means you can run it near its nameplate in most standard 40 °C panels without headroom games; if your enclosure is cooking past 55 °C, you lose about 6–10 A per step. The breaking capacity is the headline number here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V.
That's a standard line-protection curve, not a motor-protection or selective-coordination curve. If you need a different release, this variant is fixed; the 3VA family has interchangeable trip units on other order codes, but this one ships as-built.
Width fits standard 3-pole MCCB footprint. Depth suits shallow enclosures with wiring gutters.