At 40 °C it carries a full 100 A continuous current, and it holds that rating up through 50 °C before it starts to derate — at 55 °C you get 98 A, at 60 °C you get 96 A, at 65 °C it's 94 A, and at 70 °C it's 91 A. That derating curve means if your panel runs hot, you still have a solid 91 A available at the top of the operating range. The interrupting ratings are what make this breaker stand out on a high-fault panel: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
For a buyer filling a BOM line, the key fit check is the 100 A rating at your panel's ambient temperature and the interrupting capacity your fault study calls for at the system voltage. If those match, this is a drop-in replacement for any panel designed around a 3-pole SENTRON 3VA frame.
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON 3VA mounting hardware and busbar systems. Power loss is 27.5 W maximum, which matters for thermal calculations inside a sealed enclosure. If you're stacking several of these on a bus, that heat adds up — factor it into your ventilation or derating.