The Schneider Electric A9F08225 is an Acti9 iC60H miniature circuit breaker rated 25 A with a D tripping curve, 2 protected poles, and a 42 kA Icu breaking capacity at 12...133 V AC. It's a thermal-magnetic MCB meant for distribution panels where you need high short-circuit interruption and selective coordination downstream. The D curve (magnetic trip at 12 x In ±20%) handles motor and transformer inrush without nuisance tripping — that's the main reason you'd pick this over a C curve in the same iC60 family.
At 220...240 V AC that drops to 30 kA Icu, and at 380...415 V AC it's 15 kA Icu. The D curve trips magnetically at 12 x In ±20%, so for a 25 A breaker that's between 240 A and 360 A instantaneous. That delay lets motor starting currents (typically 6-8 x FLA) pass through without tripping, but still catches hard shorts. The thermal element handles overloads: it'll hold 25 A continuous and trip on a sustained 32 A load after a few minutes, depending on ambient. Overvoltage category IV means it's suitable for the main distribution board at the service entrance, not just sub-panels.
That's enough for a 25 A feed — typically 4 mm² or 6 mm² copper for the load side. The toggle switch has a trip indicator that pops a red flag when it's tripped, so you can spot a faulted circuit at a glance in a crowded panel.