It carries a breaking capacity of 10 kA per EN 60898-1 and 15 kA per IEC 60947-2, and is also listed under UL1077. The 18 mm width (1 modular unit) fits standard DIN-rail panels, and the C-curve is the go-to for general-purpose motor and lighting circuits where moderate inrush is expected.
The 63 A rating holds up to 35 °C ambient; above that, derate per the listed values — 59.16 A at 40 °C, 57.14 A at 45 °C, 55.06 A at 50 °C, 52.92 A at 55 °C, and 50.65 A at 60 °C. If the panel runs warm, the effective current capacity drops, so size the branch circuit accordingly.
Mounting and environment
Mounts in any position via the quick assembly system. Depth is 76 mm overall, installation depth 70 mm. Sealable terminals are standard, and the combined top/bottom terminals simplify busbar wiring.