What this MCCB is and what the ratings mean for your panel
The Siemens 3VA2110-5KP32-0KL0 is a SENTRON molded case circuit breaker (MCCB) built for line protection in distribution panels — the version with an ETU850 electronic trip unit, a shunt trip (STL) auxiliary release, and a full communication function. Rated continuous current Iu is 100 A, and it holds that rating flat from 40 °C through 50 °C; above that it derates to 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. That means in a warm enclosure — say a non-ventilated panel near a process line — you size the load at the derated figure for your ambient, not the 100 A nameplate. Interrupting capacity is the other headline: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. That 187 kA figure at 240 V tells you this breaker is sized for high-fault utility or transformer-fed panels where the available short-circuit current is serious. The 121 kA at 415 V covers most European industrial distribution. The 4.25 kA at 690 V is the tail — it's still adequate for most motor control center (MCC) infeeds at that voltage, but if your SCCR study calls for more, you'd step up to a higher-rated frame.
Panel fit and integration
The 3VA2110 frame measures 105 mm wide, 181 mm high, and 86 mm deep.