The Siemens 5SY5110-7CC12 is a 1-pole miniature circuit breaker from the 5SY5 series, rated C10 (10 A trip curve) for 220 V DC circuits with a 10 kA breaking capacity. This is a DC-rated MCB, not an AC general-purpose unit — the 220 V DC rating and the 'CRH' designation in its description confirm it is built for DC branch-circuit protection, typically found in DC distribution panels, telecom power plants, or industrial DC bus systems where a compact single-pole form factor is needed.
The C10 curve means the magnetic trip threshold is 5 to 10 times rated current (50–100 A), suited for loads with moderate inrush like DC motor starters or capacitive filter banks. Single-pole form factor occupies one DIN module (17.5 mm), so it fits standard distribution boards with minimal panel space.