The ABB S203M-C10 is a 3-pole miniature circuit breaker from the S200M series, rated at 10 A with a Trip Curve C characteristic. The 10 A rating means it carries continuous loads up to that level without tripping, while the Curve C characteristic (5 to 10 times rated current magnetic trip) handles moderate inrush from motor starters, contactor coils, and small transformers without nuisance trips. Interrupting rating is 6 kA at 277 VAC and 10 kA at 125 VDC — sufficient for most commercial and light industrial panelboards where the available fault current stays under those thresholds.
Panel Fit & Integration
DIN-rail mount with a 3-module width (52.5 mm at 17.5 mm per pole). Spring-cage terminals accept 0.5 to 25 mm² conductors. The S200M family shares a common accessory range — shunt trip, auxiliary contacts, undervoltage release — that clip onto the right side without increasing width.