What this MCCB is and what it does
The Siemens 3VA2110-8KP32-0AA0 is a SENTRON molded case circuit breaker (MCCB) in the 3VA platform, rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the top of the operating band. It carries a 3-pole design with an ETU850 electronic trip unit, meaning the protection curve is programmable and the breaker can communicate status over the integrated communication interface — no separate module required for basic connectivity. Breaking capacity reaches 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — figures that put it squarely in high-fault-current distribution panels where SCCR headroom matters.
Panel fit and mounting
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep. Front face carries IP40 protection, so it is suitable for clean indoor panels; the enclosure behind the escutcheon must provide the overall IP rating for the assembly.
What the ratings mean for your panel
The 100 A rating is a flat line from 40 °C to 70 °C — no thermal derating curve to calculate for elevated ambient conditions inside a crowded enclosure. Maximum power loss is 7.7 W. Isolation voltage is rated at 800 V.