The 330 kA interrupting rating at 240 V tells you this breaker can clear a massive fault upstream without welding its contacts; at 690 V it still holds 52.5 kA. The overcurrent release is an ETU310M — a microprocessor-based trip unit with adjustable thermal and magnetic settings, so you dial in the motor's actual FLA rather than living with a fixed curve. Shunt trip (STL) is built in for remote emergency-off or supervisory tripping. Auxiliary contact complement is 2 aux switches plus 1 trip alarm plus 1 electrical alarm switch — that's enough to report status and trip back to a PLC without adding a separate module.
Thermal derating — what the 100 A really delivers in a warm cabinet
At 55 °C it drops to 96 A, at 60 °C to 94 A, at 65 °C to 92 A, and at 70 °C to 90 A.
Latching endurance is 20,000 operations — that's the mechanical life, not the electrical interrupt life, which will be lower at full rated current.