Breaking capacity drops from 330 kA at 240 V to 242 kA at 415 V and 440 V, then falls to 187 kA at 500 V. At 690 V it's 3.7 kA — that's the weak point: if your system runs 690 V with available fault current above 3.7 kA, this breaker won't clear it. Check your SCCR study before committing the BOM line.
The depth is the dimension that catches people — 86 mm means it clears most shallow enclosures, but check gland-plate clearance if you're retrofitting into a tight existing panel. The trip indicator and voltage trigger are present, so you get visual and electrical confirmation of a trip event — useful for troubleshooting a nuisance trip without cracking the panel.