DC miniature circuit breaker for railway and industrial DC branches
The Siemens SENTRON 5SY5140-7CC11 is a 1-pole DC miniature circuit breaker rated for 220 V DC with a 10 kA breaking capacity per IEC 60947-2. Its C tripping characteristic (5–10× In) handles moderate inrush from DC loads like contactor coils, solenoid valves, and control transformers. The 18 mm width (1 modular unit) fits standard DIN-rail enclosures, and the quick-assembly fastening system snaps onto the rail without tools.
