The A9F07304 is a 3-pole miniature circuit breaker from the Acti9 iC60H series, rated 4 A with a C-curve trip characteristic (magnetic trip at 8 x In ±20%). That C curve means it's sized for general-purpose distribution loads — lighting, small transformers, control circuits — where inrush isn't extreme but you still want fast clearing on a hard short. The thermal-magnetic trip gives you both overload protection (thermal bimetal) and short-circuit protection (solenoid).
Deployment context — DIN-rail panel integration
Snaps onto standard DIN rail (35 mm) — the 9 mm pitch count of 6 means it occupies 6 modules (54 mm wide). The toggle control and trip indicator give local status at a glance. Terminals accept 1–25 mm² rigid or 1–16 mm² flexible, with a stripping length of 14 mm and tightening torque of 2 N·m. The IP20 finger-safe enclosure is fine for enclosed panels; not rated for washdown environments.
Standards and approvals — what they certify
Dual-rated to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (household / similar) — so it's accepted in both commercial and light-industrial distribution boards.