The Siemens SENTRON 5SL6125-6YA is a 1-pole miniature circuit breaker rated 25 A with a B tripping characteristic and a 6 kA breaking capacity per EN 60898. It protects branch circuits in residential and infrastructure panels against overload and short-circuit faults.
DIN-rail fit and panel integration
Occupies a single modular width unit (18 mm) on standard DIN rail.
Listed as current production.
The 25 A rating on a B-curve means the breaker holds steady through normal load but opens fast on a hard short. Mechanical life of 10 000 operating cycles is typical for this class; the part is not intended for frequent switching duty.