The Schneider Electric A9KF71325 is a 25 A, 3-pole miniature circuit breaker from the Acti9 K60 series, built to EN/IEC 60898-1 for distribution duty. Three protected poles, toggle control, fixed DIN-rail mount. The 54 mm width (6 x 9 mm pitches) fits standard DIN-rail enclosures; depth is 70 mm, height 81 mm.
The fixed mounting mode means it stays put once clipped; no plug-in base to worry about. IP20 finger-safe terminals are fine for enclosed panels; if the panel sees washdown or outdoor exposure, you'll need an IP54-rated enclosure around it. Wire stripping length is 14 mm for both top and bottom connections. The 2 N·m torque spec is typical for this class; a torque screwdriver set to that value avoids terminal damage.
Certified to EN/IEC 60898-1, the standard for AC miniature circuit breakers in household and similar installations. Limitation class 3 per that standard means it limits let-through energy well — useful for downstream equipment protection. Suitability for isolation (yes, per the same standard) means it can be used as a disconnection point for safe maintenance.