The A9F75301 is a three‑pole (3P) miniature circuit breaker from Schneider Electric’s Acti9 iC60N series, rated at 1 A with a D‑curve tripping characteristic (magnetic threshold at 12 × In). As a 3‑pole device protecting all three lines simultaneously, it is specifically designed for three‑phase AC systems where complete isolation of all phases is required – making it ideal for industrial control panels, motor control centres, and distribution boards in commercial and light industrial installations. The D‑curve is engineered for circuits with significant inrush currents, such as small transformers, solenoid valves, capacitive loads, and motor starters, where B‑ or C‑curve breakers would be prone to nuisance tripping. Despite its low 1 A rating, this MCB delivers a robust ultimate breaking capacity of 20 kA at 220‑240 V AC (per IEC 60947‑2) and 6 kA at 400 V AC (per IEC 60898‑1), ensuring reliable fault clearing in demanding environments. It is dual‑certified to both industrial and residential standards, offering flexibility across diverse applications. The breaker features the intuitive VisiTrip indicator, which instantly identifies the tripped pole for fast fault diagnosis, and the VisiSafe green strip that provides clear visual proof of contact opening – a critical safety feature for maintenance work. Its quick‑make/quick‑break mechanism, independent of handle position, ensures consistent performance over 10,000 electrical and 20,000 mechanical cycles. With a compact 54 mm width (6 modular pitches) and DIN‑rail mounting, it saves panel space, while the double‑tunnel terminals accept conductors up to 25 mm² (rigid) and 16 mm² (flexible) with a 2 N·m torque. Operating reliably from -35 °C to +70 °C, this MCB is built with halogen‑free plastics and PVC‑free materials, achieving 54% recyclability and a total lifecycle carbon footprint of 41 kg CO₂ eq. – all reflecting Schneider Electric’s commitment to sustainable, high‑performance power distribution.
