The A9F87163 is a 63‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, featuring a C‑curve tripping characteristic (magnetic threshold at 8 × In). The C‑curve offers an optimal balance between overload protection and tolerance of moderate inrush currents, making it a versatile choice for general distribution circuits, lighting banks, socket outlets, and small motor feeders in commercial, industrial, and residential installations. Despite its high 63 A rating, this MCB delivers a dependable ultimate breaking capacity of 10 kA at 220‑240 V AC under the industrial EN/IEC 60947‑2 standard, and 6 kA at 230 V AC per the residential EN/IEC 60898‑1 standard, ensuring robust protection across diverse applications. The device incorporates the intuitive VisiTrip fault‑finder window, which visually identifies the tripped pole to accelerate troubleshooting, and the VisiSafe green indicator that provides irrefutable proof of contact separation – a critical safety feature for downstream maintenance. Its fast‑make/quick‑break mechanism, independent of the toggle handle, ensures consistent switching performance over 10,000 electrical and 20,000 mechanical cycles. With a compact 18 mm width (2 modular pitches) and DIN‑rail clip‑on mounting, it optimises panel density. The terminals are designed for heavy‑duty wiring, accepting rigid conductors up to 35 mm² and flexible up to 25 mm², with a tightening torque of 3.5 N·m for secure connections. The breaker offers IP20 protection at the terminals and IP40 when enclosed in a modular cabinet, with a wide operating range from -35 °C to +70 °C. On the sustainability front, the product is PVC‑free and achieves 54% recyclability, though it contains halogen above thresholds; its total lifecycle carbon footprint is quantified at 31 kg CO₂ eq., with transparent environmental disclosure aligned with Schneider Electric’s net‑zero ambitions.
