S801C-D63 MCB — 63 A, Curve D, 1-Pole
The ABB S801C-D63 is a 1-pole miniature circuit breaker from the S800C series, rated 63 A with a Trip Curve D characteristic. It mounts on DIN rail and delivers a 15 kA interrupting capacity at 230 VAC, with a 10 kA rating at 125 VDC.
The 63 A continuous rating and Curve D trip characteristic (10–20× In magnetic trip) make this breaker suited for circuits with high inrush loads — motor starters, transformers, or capacitor banks — where a standard B or C curve would nuisance-trip on startup. At 125 VDC the interrupting capacity is 10 kA, which covers most DC control bus and battery-backed circuits in industrial panels.