The Siemens SENTRON 5SY6463-7CC is a 4-pole miniature circuit breaker rated 63 A at 35 °C with a C tripping characteristic — meaning it handles moderate inrush from motor starters and transformer banks without nuisance tripping, while still clearing overloads within the standard curve. The 6 kA breaking capacity per EN 60898 covers most commercial and light industrial fault levels; for UL 1077 supplementary protection installations, the interrupting rating is 5 kA. At 40 °C the continuous current derates to 60.04 A, so a panel ambient above 35 °C needs a one-step upsizing consideration. The C-curve trips at 5–10× In, a good fit for general-purpose branch circuits feeding mixed resistive and inductive loads in mechanical engineering and industrial environments.
Any mounting position is permitted, which simplifies layout in crowded enclosures.