The Siemens 5SY4106-6CC is a 1-pole SENTRON miniature circuit breaker rated 6 A with a B tripping characteristic, breaking 10 kA per EN 60898 at 50/60 Hz AC.
Temperature Derating — The Real Ampacity
At 35 °C ambient the 5SY4106-6CC carries its full 6 A. Push the panel ambient to 40 °C and it derates to 5.51 A; at 50 °C it's 4.97 A; at 55 °C it's 4.69 A. That's not a datasheet footnote — it's the actual current the breaker will hold without nuisance tripping in a warm enclosure.
Panel Fit & Integration
Snaps onto DIN rail (the quick assembly system) in any mounting position. Depth is 76 mm, which leaves clearance behind a standard 80 mm deep enclosure; installation depth is 70 mm from the rail face. The 18 mm width means it takes one modular unit — no surprises when you're laying out a 12-way board. IP20 with conductors connected, so it's a panel-interior device; keep it behind a locked door or enclosure cover.
