The Siemens 5SL3110-6MB is a 1-pole SENTRON miniature circuit breaker with a B tripping characteristic, rated 10 A at 230/400 V AC and a 4.5 kA breaking capacity per EN 60898. The 18 mm width (one modular unit) snaps onto DIN rail, so it fits any standard distribution board or sub-panel without crowding adjacent ways.
Rated 10 A continuous at 230/400 V AC, single-phase or multi-phase. Overvoltage category 3 and pollution degree 2 confirm it's rated for fixed installations inside a panel, not for outdoor or harsh industrial environments. The mechanical endurance of 10 000 switching cycles is typical for an MCB in this class; it's not a switch-disconnector meant for daily load switching.
Sealable design allows lockout/tagout provisions. Halogen-free and silicon-free construction avoids corrosive off-gassing in enclosed panels.