That 63 A holds steady at every temperature step in the spec, so the breaker delivers its full nameplate capacity in a warm panel without a sizing penalty. This is a line-protection design — it guards feeders and distribution circuits, not individual motor loads. Breaking capacity runs from 187 kA at 240 V down to 3.7 kA at 690 V.
Panel integration and physical fit
No undervoltage release or shunt trip is built in — those are separate accessories if needed.
