The A9F74103 is a 3‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, featuring a C‑curve tripping characteristic (magnetic trip at 8 × In). The C‑curve offers a balanced response between overload protection and tolerance of moderate inrush currents, making it a solid choice for protecting circuits with modest transient surges – such as small transformers, control relays, solenoid valves, and general lighting in commercial, industrial, and residential environments. Rated with an impressive ultimate breaking capacity of 50 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 norm, this MCB guarantees dependable fault interruption even in high‑fault‑current scenarios. It is certified to both standards, offering seamless integration across diverse installations – from factory automation panels to consumer distribution boards. The breaker incorporates the intuitive VisiTrip fault indicator, which visually highlights the tripped pole to accelerate troubleshooting, and the VisiSafe green strip that provides clear visual confirmation of contact opening – a vital safety feature for maintenance personnel. Its quick‑make/quick‑break mechanism, independent of toggle position, ensures reliable performance over 10,000 electrical and 20,000 mechanical cycles. The compact 18 mm width (2 modular pitches) and DIN‑rail clip‑on mounting save valuable panel space, while the double‑tunnel terminals accept rigid conductors up to 25 mm² and flexible up to 16 mm² with a 2 N·m tightening torque. The device offers IP20 terminal protection and IP40 when enclosed, operates from -35 °C to +70 °C, and is built with halogen‑free plastics and PVC‑free materials, achieving a 54% recyclability rate. With a total lifecycle carbon footprint of 13 kg CO₂ eq., this MCB aligns with Schneider Electric’s eco‑design principles for sustainable energy distribution.
