The Schneider Electric A9F04170 is an Acti9 iC60 miniature circuit breaker (MCB) — a 1-pole, 0.5 A unit with a C curve, built for AC distribution panels. It snaps onto a DIN rail, so it slots into any standard consumer unit or sub-distribution board. The 18 mm width means it takes one modular space, and the toggle control gives a clear visual on/off and a trip indicator for quick fault isolation.
Thermal-magnetic trip unit handles overloads (thermal) and shorts (magnetic). Pollution degree 3 — that's the 'industrial' rating, so it's fine in environments with conductive dust or occasional condensation, typical for a factory floor panel. It's certified as suitable for isolation — you can use it as a local disconnect with a visible contact position indicator. That saves adding a separate isolator in some layouts. The IP20 means it's for dry indoor enclosures only; it's not a standalone outdoor device.
Integration notes for the panel builder
Mounts on DIN rail — standard 35 mm. The 78.5 mm depth and 91 mm height mean it fits standard distribution board cutouts. It's white, which is the usual colour for the Acti9 range.