This is a Siemens SENTRON 3VA2110-7MS32-0CC0 molded case circuit breaker in the starter protection version — a 3-pole MCCB rated for 100 A continuous current at 40 °C ambient, with an ETU310M electronic trip unit built in.
The interrupting ratings here are high enough for most industrial service-entrance or sub-distribution applications. At 240 V it's rated for 330 kA, at 415 V and 440 V it holds at 242 kA, at 500 V it drops to 187 kA, and at 690 V it's still good for 52.5 kA. That's the kind of curve you see on a breaker meant to sit close to a transformer or a large generator — it can clear a bolted fault without the arc flashing upstream.
Thermal derating and ambient limits
At 55 °C it's 96 A, at 60 °C it's 94 A, at 65 °C it's 92 A, and at 70 °C it's 90 A.
Panel fit and auxiliary configuration
It ships with two auxiliary switches HQ and an undervoltage release (UVR) pre-installed, part number 3VA9608-0BB24.