The Schneider Electric MGN25124 is a C60H miniature circuit-breaker from the Multi9 range, rated 1 A with a D curve and 3 poles. It's built to EN/IEC 60947-2, which covers the performance and testing requirements for low-voltage circuit-breakers used in distribution.
The MGN25124 delivers 30 kA Icu at 240 V AC phase-to-phase, 15 kA at 415 V, and 10 kA at 440 V. The Ics (service breaking capacity) is 50% of Icu at each voltage level, so after clearing a fault at 15 kA on a 240 V circuit, the breaker is still rated to carry and switch its rated current. That matters for installations where a fault is cleared and the circuit needs to be re-energized without immediately replacing the breaker.
The 3-pole body takes 6 x 9 mm pitches (54 mm wide), so it occupies three module spaces in a distribution board. IP20 rated, so it's for use inside an enclosure or panel, not in washdown areas.