The Schneider Electric A9F87432 is a 32 A, 4-pole miniature circuit breaker from the Acti9 iC60H series.
Rated Icu of 42 kA at 12…133 V AC and 30 kA at 220…240 V AC, dropping to 15 kA at 380…415 V AC and 10 kA at 440 V AC. That high interrupt rating at low voltage makes it a strong pick for sub-distribution boards close to large transformers where fault current is stiff. It carries dual certification to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (domestic/commercial), so it qualifies for both panel builder and final distribution duty.
Snaps onto standard DIN rail — 9 mm pitch occupies 8 modules (72 mm wide). Terminals accept 1…35 mm² rigid or 1…25 mm² flexible, with a stripping length of 14 mm and tightening torque of 3.5 N.m. IP20 finger-safe front; pollution degree 3 rated, so it handles non-condensing conductive environments inside an enclosure.