It breaks 10 kA per EN 60898 and carries a 5 kA SCCR under UL 1077 and CSA C22.2 No. 235 — enough for most industrial panel secondary circuits but check coordination if your transformer exceeds that fault level.
D-curve and application fit
At 63 A it handles a 3-phase motor up to roughly 30 kW DOL before you need to check the starting current against the magnetic threshold. IP20 with connected conductors — fine inside a panel, not for wet locations.
Ambient range -40 to 75 °C; above 55 °C the current derating follows the curve in the spec table — at 70 °C expect roughly 55% of rated current.
Dimensions and wiring
72 mm wide (4 width units), 90 mm tall, 76 mm deep with 70 mm installation depth. Neutral conductor is not switched — this is a 4P breaker with switched poles only.