The Schneider Electric EZ9F34306 is a 6 A, 3-pole miniature circuit breaker from the Easy9 range, built to IEC 60898-1. Breaking capacity is 4.5 kA Icn at both 230 V and 400 V AC, with a service breaking capacity (Ics) of 4.5 kA at 400 V — 100 % of Icn, meaning the breaker can be reclosed after clearing a fault at its full rating without derating. That's a solid coordination point for a 6 A feeder in a 400 V three-phase panel where the upstream device is a 10 kA or higher MCB or MCCB. Pollution degree 2 covers normal industrial environments — no conductive dust or condensation expected inside the enclosure.
Clip-on mount to standard 35 mm DIN rail. Width is 54 mm (6 x 9 mm pitches), depth 66.5 mm, height 81 mm. Tunnel terminals accept 1–25 mm² rigid or 1–16 mm² flexible copper; tightening torque is 2 N·m. IP20 finger-safe terminals — fine inside a distribution board, not for wet-area standalone use. Thermal-magnetic trip unit; no auxiliary contact or shunt trip fitted (local signalling is 'without'). If you need remote status or undervoltage release, you'll add an external accessory module — the Easy9 range supports those, but this base unit is a straight thermal-magnetic only.