The A9F54240 is a two‑pole (2P) miniature circuit breaker from Schneider Electric’s Acti9 iC60H range, rated at 40 A with a C‑curve tripping characteristic (magnetic threshold at 8 × In). Designed for robust protection of both lines in single‑phase AC or DC systems, this 2‑pole device ensures complete simultaneous disconnection, offering enhanced safety and isolation for a wide array of distribution circuits – from lighting and socket outlets to small motors and control panels in commercial, industrial, and residential settings. The C‑curve provides an ideal balance between overload protection and tolerance of moderate inrush currents, making it a versatile workhorse for general‑purpose applications. Delivering a high ultimate breaking capacity of 30 kA at 220‑240 V AC (IEC 60947‑2) and 10 kA at 415 V AC (IEC 60898‑1), this MCB guarantees reliable fault clearing even in demanding environments. It meets both industrial and residential standards, providing flexibility across project types. The breaker incorporates Schneider’s signature VisiTrip indicator for rapid fault identification and the VisiSafe green strip that confirms physical contact opening – a vital safety feature for maintenance crews. Its quick‑make/quick‑break mechanism, independent of handle position, ensures long‑term reliability with 10,000 electrical and 20,000 mechanical cycles. Despite its 40 A rating, the device remains compact at 36 mm width (4 modular pitches) and clips onto DIN rails, optimising panel space. The double‑tunnel terminals accept conductors up to 25 mm² (rigid) and 16 mm² (flexible) with a 2 N·m torque, and the unit operates reliably from -35 °C to +70 °C. Built with halogen‑free plastics and PVC‑free materials, it achieves 54% recyclability and a lifecycle carbon footprint of 41 kg CO₂ eq., underscoring Schneider Electric’s commitment to sustainable energy distribution.
