The Siemens SENTRON 5SL4650-6 is a 3P+N miniature circuit breaker rated 50 A at 400 V AC, B-curve trip characteristic, with a 10 kA breaking capacity per EN 60898 and IEC 60947-2. That 10 kA rating means it will safely interrupt a fault current up to 10,000 A without welding or cascading upstream — sufficient for most residential and light commercial distribution boards where the prospective short-circuit current stays under that threshold.
This 4-module-width unit (72 mm wide) snaps onto standard DIN rail; mounting position is unrestricted.
Power loss per pole is 4 W at rated current in hot operating state; total 16 W for the 4-pole assembly, which should be factored into enclosure thermal calculations.