Its interrupting capacity reaches 187 kA at 240 V and 121 kA at 415 V and 440 V, dropping to 75.6 kA at 500 V and 7.5 kA at 690 V — so it handles high-fault utility feeds and transformer secondaries without cascading upstream.
Thermal derating and enclosure planning
Above that it derates linearly: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Maximum power loss is 96 W, which adds to the enclosure's thermal budget.
Auxiliary switching and alarm contacts
The trip alarm signals a fault condition independent of the breaker handle position — useful for remote annunciation on a PLC digital input. No undervoltage release or shunt trip is fitted; those are separate auxiliary release options if the application requires remote tripping.