The A9F74140 is a 40‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, designed with a C‑curve tripping characteristic (magnetic trip at 8 × In). This C‑curve delivers a well‑balanced response between overload protection and tolerance of moderate inrush currents, making it an ideal choice for general distribution applications – including lighting networks, socket outlets, small motor feeders, and control panels – across commercial, industrial, and residential settings. The device complies with both the EN/IEC 60947‑2 industrial standard and the EN/IEC 60898‑1 residential norm, ensuring seamless integration in mixed‑use projects. With an ultimate breaking capacity of 10 kA at 220‑240 V AC (IEC 60947‑2) and 6 kA at 230 V AC (IEC 60898‑1), it guarantees robust fault clearing even in demanding environments. The breaker features the well‑known VisiTrip window, which visually identifies the tripped pole to slash troubleshooting time, and the VisiSafe green strip that provides undeniable proof of contact separation – a vital safety check for maintenance personnel. Its quick‑make/quick‑break mechanism, independent of handle position, ensures consistent performance over 10,000 electrical and 20,000 mechanical cycles. Despite its 40 A rating, the device retains a compact 18 mm width (2 modular pitches) and clips onto DIN rails, saving valuable panel space. The terminals are engineered for heavy‑duty wiring, accepting rigid conductors up to 35 mm² and flexible up to 25 mm² with a 3.5 N·m torque. The breaker offers IP20 terminal protection and IP40 when enclosed, operates from -35 °C to +70 °C, and is built with halogen‑free plastics, PVC‑free construction, and a 54% recyclability rate. Its total lifecycle carbon footprint is quantified at 21 kg CO₂ eq., all transparently disclosed in line with Schneider Electric’s sustainability commitments.
