The Siemens 5SY4163-7CC11 is a SENTRON 1-pole miniature circuit breaker rated 63 A with a C tripping characteristic and a 10 kA breaking capacity per EN 60898. It is designed for railway applications and carries an IP20 rating with conductors connected. The 18 mm width occupies one modular unit on a DIN rail, and the quick-assembly fastening lets it snap into any mounting position.
The 63 A rating at 35 °C is the headline current, but the part derates to 59.22 A at 40 °C and 50.84 A at 60 °C — so if your enclosure runs warm, the actual continuous current the breaker can carry without nuisance tripping drops.
Integration notes
Its 18 mm width and 76 mm depth fit standard distribution boards; the combined terminal at top and bottom accepts both busbar and cable connections.