The ABB S204-B10 is a 4-pole miniature circuit breaker rated for 10 A with a trip curve B characteristic. It mounts on a standard DIN rail and carries a 10 kA interrupting rating at 277 VAC — that's the fault current it can safely clear without welding contacts or rupturing the case, sized for typical commercial and light industrial panelboards where the available fault current stays under that threshold.
DIN-rail fit & panel integration
Snaps onto 35 mm DIN rail per EN 60715. Four-pole width means it occupies four modular spaces (4 x 17.5 mm) on the rail — plan the gland plate and fill factor accordingly if you're swapping into an existing panel.