The Siemens SENTRON 5SL4208-7RC is a 2-pole miniature circuit breaker rated 8 A with a C tripping characteristic and a 10 kA breaking capacity per EN 60898 at 415 V AC.
The 10 kA breaking capacity at 415 V AC (per EN 60898) means this MCB can safely interrupt a fault current up to 10,000 A without welding its contacts or rupturing the case — sufficient for most residential and light commercial service entrances where the prospective short-circuit current stays under that threshold. The 2-pole design switches both line conductors simultaneously — no neutral switching (the neutral bar stays solid).
Depth 76 mm (70 mm installation depth), width 18 mm. IP20 with connected conductors. Touch protection built into terminals.