The Siemens SENTRON 3VA2010-6HL32-0JL0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full -25 °C to 70 °C operating range — no derating needed up to the panel ambient limit.
Trip range and breaking capacity
The adjustable thermal-magnetic trip unit covers 150 A to 1200 A — that's a wide window, so you can set it to match the actual load without swapping the breaker. Breaking capacity hits 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V.
Physical fit
Power loss is 13.5 W max, so thermal rise in a sealed enclosure is manageable; just don't stack it tight against heat-sensitive components without checking the internal temperature.