The A9F79150 is a 50‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, engineered with a C‑curve tripping characteristic (magnetic threshold at 8 × In). This C‑curve design makes it an excellent choice for protecting circuits with moderate inrush currents – such as lighting banks, general socket outlets, control panels, and small motor feeders – where a balance between overload protection and nuisance‑trip avoidance is critical. As part of the iC60N family, this MCB delivers reliable breaking capacities: 10 kA at 220‑240 V AC per the industrial EN/IEC 60947‑2 standard, and 6 kA at 230 V AC for residential applications under EN/IEC 60898‑1, making it equally suitable for commercial distribution boards and industrial sub‑distribution. The device incorporates the intuitive VisiTrip fault‑finder, which highlights the tripped pole to accelerate troubleshooting, and the VisiSafe green strip that gives unequivocal visual proof of contact separation – an essential safety feature before performing downstream maintenance. Its fast‑make/quick‑break mechanism, independent of handle position, ensures consistent performance over 10,000 electrical and 20,000 mechanical cycles. Despite its high 50 A rating, the breaker maintains a compact 18 mm width (2 modular pitches) and clips onto DIN rails, optimising panel density. The terminals accept rigid conductors up to 35 mm² and flexible up to 25 mm², with a robust 3.5 N·m torque for secure connections. It offers IP20 protection at the terminals and IP40 when enclosed in a modular cabinet, with a wide operating temperature range from -35 °C to +70 °C. On the sustainability front, the product is PVC‑free and achieves 54% recyclability, though it does contain halogen above thresholds; its full lifecycle carbon footprint is quantified at 23 kg CO₂ eq., reflecting Schneider Electric’s transparent environmental reporting.
