The A9D52425: Breaking capacity is 6 kA Icu at 380–415 V AC 50 Hz per EN/IEC 60947-2, and 6000 A Icn per EN/IEC 61009-2-1 — enough for most distribution outgoer circuits in commercial and light industrial panels. The thermal-magnetic trip unit provides magnetic tripping at 5–10 × In, and the integrated earth-leakage protection trips at 300 mA — sized for protection against indirect contact in TN or TT systems, not for supplementary personal protection (30 mA would be needed for that).
Clip-on mounting to DIN rail (EN/IEC 60715). Occupies 8 pitches at 9 mm per pole, so the 4P unit spans 72 mm on the rail. Depth is 78 mm, height 86 mm — fits standard distribution enclosures with IP40 front protection (IP20 terminals). Tunnel-type terminals accept 1–35 mm² rigid or 1–25 mm² flexible, with a 12 mm strip length and 2 N·m tightening torque. Connection pitch between poles is 9 mm.
Rated for 10,000 electrical cycles and 20,000 mechanical cycles, with tropicalisation class 2 and 95 % relative humidity at 55 °C — suitable for controlled indoor environments, not outdoor or washdown.
Application context
Positioned as an outgoer device in distribution boards (Acti9 range).