63 A, D Curve, 2-Pole — Panel Fit
For a 63 A frame, that's a magnetic trip threshold between 630 A and 1260 A — well above the locked-rotor draw of most motor circuits this size protects.
Breaking Capacity and Ambient Derating
Breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2, with the same 15 kA rating for DC per IEC 60947-2. The 63 A rating is at 35 °C ambient. Derate to 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 hot, size the breaker for the actual load at the expected ambient, not the nameplate 63 A.
The SENTRON series is Siemens' standard MCB platform, widely specified across European and export panels.
Mounting and Environmental Notes
Ambient range is -40 °C to 75 °C, with humidity limits of 95% up to 55 °C, 55% up to 70 °C, and 35% up to 75 °C. Halogen-free and silicon-free construction.