The Siemens 3VA2110-5KP46-0AA0 is a 4-pole 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. That makes it a line-protection MCCB you can spec into a panel and forget about thermal re-rating as the cabinet warms up. The ETU850 electronic trip unit handles the overcurrent curve; communication function is built in for remote monitoring or integration into a plant-wide power management system.
This MCCB delivers 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. Those are the interrupting ratings that decide whether the breaker clears a fault without upstream fuses or another breaker having to open.
Power loss is 10 W maximum, which matters for thermal calculations in a densely packed enclosure.