The A9F04301 is a Schneider Electric Acti9 iC60 miniature circuit-breaker rated at 1 A with a C curve, three poles, and a breaking capacity of 50 kA Icu at 415 V AC. It's a thermal-magnetic trip unit designed for distribution circuits on DIN rail, covering both AC and DC networks at 50/60 Hz.
The 1 A rating with C curve (magnetic trip at 8 x In ±20%) means this breaker protects small loads like control transformers or signal circuits where inrush is moderate — not motor feeders. The 10 kA Icn at 400 V (per EN/IEC 60898-1) is the domestic/commercial rating — the higher Icu figure is the industrial one that matters for distribution boards with large upstream transformers. The IP20 finger-safe terminals are standard for enclosed gear; no washdown rating here.
Snaps onto DIN rail, 54 mm wide (6 x 9 mm pitches), 91 mm tall, 78.5 mm deep. Double terminals top and bottom accept 1–25 mm² rigid or 1–16 mm² flexible — strip 14 mm, torque to 2 N.m. The toggle handle and trip indicator give local status; a separate earth-leakage block can be added alongside.