Acti9 iC40N — 6 A, C-curve, 3-pole miniature circuit breaker
It's a 3-pole unit rated at 6 A with a C-curve trip characteristic, meaning magnetic tripping occurs between 5 and 10 times the rated current per EN/IEC 60898-1, and at 8 x In ±20% per EN/IEC 60947-2. Breaking capacity is 10 kA Icu at 400 V AC per IEC 60947-2, with an Icn of 6000 A at 400 V per IEC 60898-1. That dual rating gives you selectivity headroom in a typical distribution board — the 10 kA ultimate rating governs fault clearing upstream; the 6 kA service rating covers the downstream branch. The thermal-magnetic trip unit covers sustained overloads and short circuits.
Width is 54 mm (6 x 9 mm pitches), height 85 mm, depth 74 mm. That footprint is common across the Acti9 range — if you're swapping an existing iC40 or iC60 unit, the busbar alignment and enclosure cutout should match. The IP20 terminal protection (IP40 on the modular enclosure per IEC 60529) meets typical panel requirements — not rated for washdown, but fine inside a closed cabinet. Operating altitude is rated to 2000 m without derating.
The breaker carries quality labels from OVE and AENOR, and is certified to the harmonized standards EN/IEC 60898-1 and EN/IEC 60947-2. Compliance documentation (declaration of conformity) is available from the manufacturer for your QA file. This is a standard distribution product — not a safety-rated device with a TÜV SIL certificate, but the isolation suitability and dual-standard breaking capacity give you the typical documentation for an IEC panel.