The A9F75240 is a two‑pole (2P) miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, rated at 40 A with a D‑curve tripping characteristic (magnetic threshold at 12 × In). The D‑curve is specifically engineered for circuits that experience significant inrush currents – such as motor starters, transformers, solenoid banks, capacitive loads, and welding equipment – where B‑ or C‑curve devices would be prone to nuisance tripping. With both poles protected, this 2‑pole breaker ensures simultaneous disconnection of both lines, delivering complete isolation and enhanced safety for single‑phase AC or DC installations. It provides a robust ultimate breaking capacity of 20 kA at 220‑240 V AC (IEC 60947‑2) and 6 kA at 400 V AC (IEC 60898‑1), ensuring reliable fault clearing in demanding industrial and commercial environments. Dual‑certified to both industrial and residential standards, it offers flexible deployment across control panels, distribution boards, and heavy‑duty equipment protection. The breaker features the intuitive VisiTrip indicator, which instantly identifies the tripped pole for rapid fault diagnosis, and the VisiSafe green strip that provides clear visual proof of contact opening – a critical safety feature for maintenance crews. Its quick‑make/quick‑break mechanism, independent of handle position, guarantees consistent performance over 10,000 electrical and 20,000 mechanical cycles. With a compact 36 mm width (4 modular pitches) and DIN‑rail mounting, it saves panel space, while the terminals accept rigid conductors up to 35 mm² and flexible up to 25 mm² with a 3.5 N·m tightening torque. Operating reliably from -35 °C to +70 °C, this MCB is built with PVC‑free materials and achieves 54% recyclability, though it contains halogen above thresholds. Its total lifecycle carbon footprint is quantified at 41 kg CO₂ eq., reflecting Schneider Electric’s transparent environmental reporting.
