The Siemens SENTRON 3VA2110-6HN36-0KC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full operating temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. That 100 A holds steady at every 5 °C step in between, so it's a straight pick for a 100 A feeder or main breaker in a panel that runs warm. Breaking capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V.
Footprint is 105 mm wide, 181 mm tall, 86 mm deep — standard 3-pole MCCB envelope for a 100 A frame. If you need UVR or GF, you're looking at a different suffix in the 3VA2 family.
At 415 V, 187 kA still covers most industrial distribution boards.