What this MCCB does on the line
The Siemens SENTRON 3VA2110-6HL32-0AC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, with an adjustable thermal-magnetic trip unit covering 150 A to 1 200 A. That trip range means you can set it to protect a feeder or a large motor branch without swapping the breaker body — useful when the load calc lands somewhere between those endpoints. The 242 kA interrupting rating at 240 V AC tells you it can handle a high-fault bolted short without venting or welding contacts; at 415 V and 440 V it still holds 187 kA, so it's comfortable on most 400 V-class distribution panels. If your BOM calls for a communicating breaker or one with a shunt trip, this isn't it. But if you need a straight thermal-magnetic MCCB with a wide adjustable trip and high SCCR, this fits.
Panel fit and thermal performance
That's unusual — many breakers start derating above 40 °C. Here, the 100 A holds all the way to 70 °C, so you don't have to oversize the frame for a hot panel.