What this 2A C-curve MCB is for
The Schneider Electric A9N4P02CIN is a 4-pole miniature circuit breaker from the Acti9 xC60 series, rated 2 A with a C-curve trip characteristic. Rated 2 A at 380–415 V AC with a breaking capacity of 10 kA (IS/IEC 60947-2), it handles moderate fault levels typical in commercial and light industrial sub-distribution. The C-curve (magnetic trip at 8 x In ±20%) means it tolerates the inrush of small transformers, capacitor banks, or motor starters without nuisance tripping — a common choice for mixed resistive-inductive loads. With 4 protected poles and suitability for isolation, it can serve as a main or branch breaker in a 3-phase + neutral system, or as a DC disconnect (6 kA Icu at 220–250 V DC).
The 4-pole body is 72 mm wide — 8 x 9 mm pitches — and 77.5 mm deep, leaving standard clearance for gland plates and door swing. Strip length is 13 mm; torque terminals to 2 N·m.