Its interrupting capacity ranges from 330 kA at 240 V down to 4.5 kA at 690 V — the 330 kA figure at 240 V is the headline number for high-fault service-entrance applications where available short-circuit current is substantial. The 242 kA at 415 V and 440 V covers the common European low-voltage distribution voltages, while the 187 kA at 500 V suits industrial 480 VAC systems.
Above that it derates linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. For a panel running warm — say 55 °C inside the enclosure — the usable current is 241 A, not the nameplate 250 A. That 9 A difference matters when sizing for a continuous load near the limit.
The two HQ auxiliary switches are the only integrated accessories.