What the 100 A continuous rating means for your panel
The Siemens SENTRON 3VA2110-8KQ32-0AA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. That 100 A holds steady at every 5 °C increment, so it's sized for a 100 A feeder or branch circuit in a warm enclosure without recalculating the thermal curve. The 800 V rated insulation voltage gives headroom for 480 V and 600 V class systems; the 440 kA interrupting rating at 240 V drops to 330 kA at 415 V and 52.5 kA at 690 V, so verify the available fault current at your service voltage before committing the BOM line.
Breaking capacity curve — what trips up specifiers
This MCCB carries a communication function and ground-fault monitoring via summation current formation on the L-conductor, so it's not a bare thermal-magnetic — it's a communicating, ground-fault-capable breaker for line protection. The 7.7 W maximum power loss is low enough that ventilation in a standard IP2X enclosure is sufficient; no forced cooling required. Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — fits standard Siemens 3VA panel cutouts and busbar systems without adapter plates.