The A9KF71332BQ: The 32 A rated current (In) sets the continuous load it can carry without tripping in a 30 °C ambient. The C curve (magnetic tripping limit 5–10 × In) means it handles moderate inrush — typical for small motors, transformers, and lighting banks — without nuisance trips on startup. That rating is tested to EN/IEC 60898-1, which certifies the MCB for final-distribution circuits in residential, commercial, and light industrial panels. Three protected poles (3P) suit three-phase distribution or three independent single-phase circuits in one module.
Snap-on DIN rail mounting (fixed mode) and 54 mm width (6 × 9 mm pitches) fit standard distribution board layouts. Tunnel terminals accept 1–25 mm² rigid or 1–16 mm² flexible conductors; wire stripping length 14 mm. Tightening torque 2 N·m top or bottom.