The Schneider Electric A9K23604 is an Acti9 iK60N miniature circuit breaker (MCB) — a 1P+N unit rated 4 A at 30 °C with a B tripping curve and a 6 kA breaking capacity at 230 V AC, certified to EN/IEC 60898-1.
It clips onto standard DIN rail (EN 60715) and takes up 4 module pitches at 9 mm each — 36 mm wide total. That's a standard 1P+N footprint for a single-module-width neutral on the left. The toggle handle gives local ON/OFF indication; no auxiliary contact position indicator on this variant. IP20 rated for the front face — fine inside a panel, not for wet environments.
