The ABB S802U-K30 is a 30 A miniature circuit breaker with a K-trip curve, configured as a 2-pole unit rated for 240/415 VAC.
What the K-trip curve means for the panel builder
The K-trip characteristic on this 30 A breaker provides a magnetic trip threshold of 8 to 12 times the rated current, which is higher than a B curve (3–5×) or C curve (5–10×). On a 2-pole 240/415 VAC supply, the S802U-K30 handles line-to-line or line-to-neutral faults within its rated breaking capacity.
DIN rail mount means it snaps onto standard 35 mm top-hat rail inside the enclosure. The 2-pole form factor occupies two module widths, so factor that into your rail fill and gland-plate planning. No special busbar or adapter needed for the 240/415 VAC feed — standard comb bus or ring-tongue terminals on the line and load lugs.