Overview
The EZ9F53125 is a Schneider Easy9 1-pole miniature circuit breaker rated 25 A with a C-curve trip characteristic, built for 230 V AC distribution panels. Its thermal-magnetic trip unit breaks fault currents up to 3 kA (SANS 60947-2), and the 18 mm width fits standard DIN-rail enclosures.
Selection and sizing
At 25 A, this breaker suits general-purpose lighting and socket-outlet circuits where the C-curve handles moderate inrush from small motors or transformers without nuisance tripping. The 3 kA breaking capacity covers most residential and light commercial panelboards; verify the prospective short-circuit current at the point of installation stays under that limit.