It carries a continuous current of 63 A at 40 °C through 70 °C without derating — the full 63 A holds across the entire operating temperature range. The maximum current rating is 756 A. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. It has a trip indicator and no voltage trigger or communication function.
The 63 A continuous rating is flat from 40 °C to 70 °C — no derating needed as ambient climbs, which simplifies panel thermal budgeting. The 187 kA interrupting rating at 240 V means this breaker can safely clear a fault of that magnitude without upstream protection coordination issues; at 415 V it still handles 121 kA, covering most industrial distribution scenarios. The 756 A maximum rating is the short-time withstand (Icw) or instantaneous trip threshold — it's not a load current; don't size it as such.
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. The auxiliary switch block (2 aux + 1 trip alarm) adds depth on the left side; factor that into gland-plate layout.