Rating and compliance summary
The Schneider Electric A9P42706 is a 6 A miniature circuit breaker from the Acti9 iC40 range, configured as 3P+N with a B-curve trip characteristic. The B-curve (magnetic tripping limit 3...5 × In per EN/IEC 60898-1, 4 × In ±20% per EN/IEC 60947-2) means it trips instantaneously on moderate overloads — suited for resistive and general-purpose distribution circuits where inrush is low, such as lighting or heater banks. Breaking capacity is 4.5 kA Icn at 400 V AC (EN/IEC 60898-1) and 6 kA Icu at 400 V AC (EN/IEC 60947-2), giving the panel designer two coordination paths: the Icn figure governs the standard distribution duty, while the higher Icu figure supports industrial feeder applications where the upstream fault current may exceed 4.5 kA.
Clip-on mounting to DIN rail (per), occupying 6 × 9 mm pitches (54 mm width,). The 3P+N format with neutral on the left matches the standard Acti9 busbar layout — no reordering needed when ganging with other iC40 poles. Tunnel terminals accept 1...16 mm² rigid or 1...10 mm² flexible cable; strip length 14 mm, tightening torque 2 N·m. IP20 on the body, IP40 inside the modular enclosure — adequate for dry indoor panels; no washdown rating.