Schneider Electric A9F07250 is an Acti9 iC60H miniature circuit breaker — 50 A rated current, 2 poles, C-curve, thermal-magnetic trip unit. It sits on a DIN rail, occupies 4 modular pitches (36 mm width), and is rated for both AC and DC networks at 50/60 Hz. Overvoltage category IV means it's designed for the main incoming supply — not just sub-distribution.
The iC60H (the 'H' denotes high breaking capacity) delivers 42 kA Icu at 12…133 V AC, 30 kA at 220…240 V, 15 kA at 380…415 V, and 10 kA at 440 V per EN/IEC 60947-2. Under the domestic-standard EN/IEC 60898-1 it's rated 15 kA Icn at 400 V. That spread means you can coordinate downstream with lower-rated MCBs in a tiered panel — the iC60H clears faults fast enough that a 10 kA rated branch breaker won't see energy beyond its rating.
IP20 finger-safe front, but the busbar area is live when installed — standard panel practice. Pollution degree 3 and tropicalisation class 2 (IEC 60068-1) mean it handles condensation and conductive dust in unsealed enclosures.