The 100 A rating means it protects a circuit carrying up to that continuous current — typically a motor or transformer primary — without nuisance tripping on inrush.
Compliance documentation
As an ABB S800S series MCB, the S803S-K100 is designed to meet IEC/EN 60898-1 and IEC/EN 60947-2 standards for overcurrent protection. RoHS and REACH compliance documentation is available from the manufacturer on request. The interrupting rating of 50 kA at 230 VAC is tested per IEC 60947-2.
