ABB S801C-D16 MCB, 1P D 16A, DIN Rail

On the thermal side, it holds the 16 A continuous load and trips on sustained overload. The interrupting rating is 15 kA at 230 VAC and 10 kA at 125 VDC. That 15 kA AC rating is well above the typical residential/commercial service-entrance fault level (10 kA) and covers most industrial panelboard applications up to the service transformer. The DC rating at 10 kA is strong for a 1-pole breaker — it handles battery-bank or rectifier-fed circuits without needing series-trip coordination. The S800C footprint is compact for a high-interrupting MCB — 1 module wide (17.5 mm), so it fits tight panel layouts. No special busbar or adapter needed; it clips directly onto the rail and accepts standard pin or fork busbars.