The Siemens SENTRON 3VA2110-5MN32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across its full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. It is specifically designed for motor protection, with built-in phase failure detection that catches a lost phase before the motor overheats. The interrupting capacity is the headline number for selectivity studies: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
Deployment context — panel fit and motor branch
The 105 mm width and 86 mm depth fit standard SENTRON 3VA cutouts; the 181 mm height clears most enclosure gland plates. The 10 W maximum power loss is low enough that thermal rise in a crowded panel stays manageable — no forced cooling required for this breaker alone.