It carries UL 489 listing for branch-circuit protection at 240 VAC, so it is accepted in North American panel builds that require a listed MCB on the line side. The DIN-rail footprint matches standard enclosure mounting — no adapter plate needed.
What Trip Curve K means for your load
Curve K is a specialty trip characteristic that sits between B and C on the magnetic-trip threshold. It typically trips instantaneously at 8 to 12 times rated current (In). For a 15 A breaker, that means the magnetic trip fires between roughly 120 A and 180 A.
The 1-pole width (roughly 18 mm per pole) leaves room for adjacent breakers in a multi-pole assembly. Wire termination is screw-clamp; torque per the marking on the housing. The 240 VAC rating covers line-to-neutral or line-to-line single-phase circuits — common for control transformers, small motor branch circuits, or lighting panels within a UL 508A industrial control panel.