What the ratings mean for fit
The Siemens 3VA2110-8JP32-0AA0 is a SENTRON molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel layout in warm enclosures. Its ETU550 electronic trip unit provides adjustable overload and short-circuit protection for line (feeder) duty. Breaking capacity hits 440 kA at 240 V AC and 330 kA at 415 V AC, meaning it can safely interrupt very high fault currents without upstream cascading — a key spec for high-SCCR industrial panels where the available fault current exceeds 200 kA. The 3-pole design and IP40 front protection suit standard switchboard or enclosed distribution use.
Integration notes
Mounts on a standard DIN rail or panel-mount base. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — fits a typical 3-pole MCCB footprint. The ETU550 supports communication (via the integrated communication function), enabling remote monitoring and trip-event logging over the plant network. No undervoltage release or ground-fault monitoring is built in; those are external accessories if needed. Power loss is 7.7 W maximum — negligible for thermal budgeting in a multi-breaker enclosure.