The Siemens 5SL5101-7CC is a 1-pole SENTRON miniature circuit breaker with C-curve tripping characteristic, rated for 125 V DC with a 10 kA breaking capacity. This is a DC-specific MCB — the 72 V DC maximum operating voltage and 125 V DC rating mean it is designed for DC circuits, not standard AC branch circuits. It occupies a single modular width unit (18 mm) on a DIN rail, making it a compact fit for DC distribution panels, telecom power supplies, or solar combiner boxes where overcurrent protection at these DC voltage levels is required.
Mounting & integration
The 18 mm width and 76 mm depth match the standard SENTRON 5SL series footprint — it snaps onto a 35 mm DIN rail and occupies one modular space. The IP20 rating with connected conductors is typical for enclosed panel installation; no special sealing or washdown protection is provided, so it belongs inside a cabinet, not on the machine surface. The sealable design allows the installer to lock the toggle position after commissioning, which is useful for DC circuits that must not be inadvertently reset during maintenance.