It carries a 242 kA interrupting capacity at 240 V, dropping to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V — so it handles high-fault utility feeds and large motor branch circuits without cascading upstream. The thermal derating curve is flat from 40 °C to 50 °C (full 400 A), then steps down: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The 110 mm depth and 138 mm width fit standard panel-mount cutouts for this frame size.
Integration and compliance notes
Maximum power loss is 96 W — account for that in enclosure thermal calculations. These are the replacement subassemblies if a service swap is needed.