Its breaking capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — numbers that put this squarely in the high-fault-current class for industrial distribution panels where the upstream transformer can dump serious energy into a bolted fault.
The 16 A rating holds flat from 40 °C to 50 °C, then derates to 15.36 A at 55 °C and 14.4 A at 70 °C. That matters in a sealed panel or a high-ambient machine cabinet — you don't lose headroom until the enclosure air hits 55 °C. That simplifies the BOM but means the breaker is dedicated to its 16 A setting. If the load changes, the breaker changes with it. The shunt trip (STL) auxiliary release (3VA9688-0BL30) is available as an add-on for remote tripping, but there's no undervoltage release option on this variant.