The 3VA2340-5HL42-0AF0: Rated breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. Thermal derating is published: full 400 A holds through 50 °C, then drops to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C.
Physical fit and integration
Built-in auxiliary contact configuration is 1 auxiliary switch + 1 trip alarm switch (HQ version). If you need those, they must be added externally or the variant changed. These are the subcomponents if you are repairing rather than replacing the whole breaker.
