The A9F77263 is a high‑capacity two‑pole (2P) miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, rated at 63 A with a C‑curve tripping characteristic (magnetic threshold at 8 × In). As a 2‑pole device protecting both lines, it guarantees simultaneous disconnection of phase and neutral in single‑phase AC systems or both poles in DC applications, delivering full isolation and enhanced safety for heavy‑duty distribution circuits. The C‑curve provides an optimal balance between overload protection and tolerance of moderate inrush currents, making it an ideal choice for large lighting banks, power feeders, HVAC equipment, and motor control circuits in commercial and industrial installations. This MCB offers a robust ultimate breaking capacity of 20 kA at 220‑240 V AC (per IEC 60947‑2) and 6 kA at 400 V AC (per IEC 60898‑1), ensuring reliable fault clearing in demanding environments. Dual‑certified to both industrial and residential standards, it offers flexible deployment across diverse projects. The breaker features the intuitive VisiTrip indicator, which instantly identifies the tripped pole to accelerate fault diagnosis, and the VisiSafe green strip that provides clear visual proof of contact opening – a critical safety feature for maintenance crews. Its quick‑make/quick‑break mechanism, independent of handle position, ensures consistent performance over 10,000 electrical and 20,000 mechanical cycles. Despite its high 63 A rating, the device maintains a compact 36 mm width (4 modular pitches) and clips onto DIN rails, saving panel space. The terminals are engineered for heavy‑duty wiring, accepting rigid conductors up to 35 mm² and flexible up to 25 mm² with a 3.5 N·m tightening torque. Operating from -35 °C to +70 °C, this MCB is built with PVC‑free materials and achieves 54% recyclability, though it contains halogen above thresholds. Its total lifecycle carbon footprint is quantified at 63 kg CO₂ eq., reflecting Schneider Electric’s transparent environmental reporting.
