Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V — figures that give selectivity headroom for high-fault utility feeds or transformer secondaries.
The 630 A rating at 40 °C derates to 520 A at 70 °C — a 17 % drop that matters when the breaker sits in a crowded, poorly ventilated enclosure.
Integration notes
The ETU350 trip unit is field-configurable for LSI curves; the shunt trip (STL) requires a separate control voltage. No auxiliary contacts or communication module are built in — add the 3VA9688-0BL32 auxiliary trip block if you need remote status. The maximum power loss of 162 W must be factored into enclosure thermal calculations.