Its 242 kA interrupting capacity at 240 V AC handles high-fault scenarios typical of large transformer-fed services, while the 187 kA at 415 V and 121 kA at 500 V cover medium-voltage step-down applications. The electronic trip unit offers an adjustable current range from 945 A minimum to 5670 A maximum, with a full-scale value of 630 A — meaning the breaker can be set to protect feeders or main buses within that band. A built-in communication function allows integration with energy management or SCADA systems, and the trip indicator provides local fault visibility without opening the panel door.
Continuous current derates from 630 A at 40 °C ambient to 450 A at 70 °C — a drop of roughly 3 A per degree above 40 °C — so panel internal temperature rise must be factored into the breaker's actual load capacity. Maximum power loss is 162 W at rated current, which contributes to enclosure heat load and should be included in the panel thermal budget.