The A9F75104 is a 4‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60N family, featuring a D‑curve tripping characteristic (magnetic trip at 12 × In). This high‑threshold D‑curve is specifically tailored for circuits with pronounced inrush currents – such as small motor starters, solenoid valves, compressors, and capacitive loads – where lower‑curve breakers would be prone to nuisance tripping. Despite its modest 4 A rating, this MCB delivers an exceptional ultimate breaking capacity (Icn) of 50 kA at 220‑240 V AC under the industrial EN/IEC 60947‑2 standard, making it one of the most robust breakers in its class for low‑current applications. It also complies with the residential EN/IEC 60898‑1 standard with a 6 kA rating at 230 V, offering versatility across commercial, industrial, and domestic installations. The device is equipped with the VisiTrip fault‑finder window, which visually pinpoints the tripped pole to shorten diagnostic time, and the VisiSafe green indicator that confirms physical contact separation – an essential safety check for downstream maintenance. Its quick‑make/quick‑break mechanism, independent of the toggle handle, ensures reliable switching over 10,000 electrical and 20,000 mechanical cycles. The compact 18 mm width (2 modular pitches) and DIN‑rail clip‑on design optimise panel space, while the double‑tunnel terminals accept rigid conductors up to 25 mm² and flexible up to 16 mm². The breaker offers IP20 protection at the terminals and IP40 when housed in a modular enclosure, with a wide operating range from -35 °C to +70 °C. Environmentally, it uses halogen‑free plastics, is PVC‑free, and achieves 54% recyclability, with a total lifecycle carbon footprint of 14 kg CO₂ eq., aligned with Schneider Electric’s sustainability commitments.
