The Siemens SENTRON 5SL4110-8 is a 1-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated at 10 A and 400 V AC, with a 10 kA breaking capacity per EN 60898 and IEC 60947-2. That D-curve means it's built for loads with high inrush — motor starters, transformers, discharge lighting — where the magnetic trip holds off until roughly 10 to 20 times rated current, so nuisance tripping on startup doesn't happen.
Sealable, halogen-free, silicon-free — that's a plus for clean-room or low-corrosion environments where outgassing matters.
Ratings that matter for selection
The 10 A rating is at 30 °C; at 40 °C it derates to 9.24 A, at 45 °C to 8.8 A, at 55 °C to 7.96 A. If your panel ambient runs warm, size the breaker one step up or account for the derate. DC rating is 72 V maximum — useful for control circuits but not for 125 V DC battery banks.