The A9F53263 is a high‑capacity two‑pole (2P) miniature circuit breaker from Schneider Electric’s Acti9 iC60H series, rated at 63 A with a B‑curve tripping characteristic (magnetic threshold at 4 × In). The B‑curve is specifically optimised for circuits with minimal or negligible inrush currents – such as resistive heating loads, large lighting banks, and general‑purpose distribution feeders – delivering precise overload and short‑circuit protection without nuisance tripping. As a 2‑pole device with both poles protected, it guarantees simultaneous disconnection of both lines in single‑phase AC systems or DC installations, providing complete isolation and enhanced safety for heavy‑duty applications. This MCB offers a robust ultimate breaking capacity of 30 kA at 220‑240 V AC (per IEC 60947‑2) and 10 kA at 415 V AC (per IEC 60898‑1), ensuring reliable fault clearing in demanding industrial and commercial environments. It is dual‑certified to both industrial and residential standards, offering flexibility across diverse project types. The breaker features the intuitive VisiTrip indicator, which instantly identifies the tripped pole for fast 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. With a compact 36 mm width (4 modular pitches) and DIN‑rail mounting, it saves panel space, while the double‑tunnel terminals accept conductors up to 25 mm² (rigid) and 16 mm² (flexible) with a 2 N·m torque. Operating reliably 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.
