Breaking capacity drops from 242 kA at 240 V to 187 kA at 415/440 V, then to 121 kA at 500 V, and 4.5 kA at 690 V. The steep fall at 690 V means this breaker is optimized for 240–500 V systems; at 690 V the SCCR is only 4.5 kA, so verify the available fault current if deploying on a 690 V line. The adjustable thermal-magnetic trip unit covers 375 A to 2 500 A maximum setting range, giving flexibility to coordinate with downstream breakers in a selective distribution scheme.
Rated 250 A continuous from 40 °C up to 50 °C ambient, then derates linearly to 213 A at 70 °C. In a sealed panel with poor airflow, expect to apply the 70 °C column.
Maximum power loss is 50.5 W at rated current — factor this into enclosure thermal calculations, especially when grouping multiple breakers.