The interrupting capacity at 240 V is 187 kA, at 415 V and 440 V it is 121 kA, and at 690 V it drops to 5.1 kA — so the voltage class of your installation determines the fault current the breaker can safely clear.
Trip unit and auxiliary releases
A voltage trigger is present; undervoltage release and phase failure detection are not fitted on this variant.
Above that, the current must be derated: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. Maximum power loss is 48 W. These numbers matter when sizing the enclosure ventilation — a fully loaded breaker at 250 A dissipates nearly 50 W, which adds up in a multi-breaker panel.
The depth of 86 mm includes the arc chamber and terminals; allow clearance for cable bending radius and the shunt trip wiring.