What this 16 A Trip Curve D MCB covers
The ABB S801UE-K30 is a 2-pole miniature circuit breaker from the S800 series, rated 16 A with a Trip Curve D characteristic. It mounts on a DIN rail and carries a 6 kA interrupting rating at 277 VAC, with a DC voltage rating of 110 V. The Trip Curve D means it tolerates short-duration inrush currents typical of motor loads, transformers, or welding equipment — it trips magnetically between 10x and 20x rated current, so it won't nuisance-trip on startup surges that a Curve B or C would catch.
Panel integration
Snap-on DIN rail mounting per EN 60715. The 2-pole footprint occupies two modular spaces (36 mm at 18 mm per pole). Wire termination accepts up to 35 mm² conductor for the load side; torque settings per the terminal marking on the front face. The S800 series shares a consistent accessory range — shunt trip, auxiliary contacts, undervoltage release — all clip onto the same side profile.