What it is and what the ratings mean
The S801S-D10 is a 1-pole miniature circuit breaker (MCB) on a DIN-rail footprint, rated 10 A with a Trip Curve D characteristic. The 50 kA interrupting capacity at 230 VAC means it can safely clear a fault up to that level without welding contacts or cascading upstream — a solid fit for industrial panels where fault currents run high, not just residential service.
Where it goes and how it fits
Snaps onto standard DIN rail in any control cabinet. The 1-pole format takes one module width — tight for dense panels. Trip Curve D means it tolerates high inrush currents (motor starts, transformer energization) without nuisance tripping, while the thermal-magnetic mechanism handles overload and short-circuit protection in one package.