The Schneider Electric Acti9 iC60H A9F55340 is a three-pole miniature circuit breaker designed for low-voltage distribution systems. It is rated 40 A and uses a D-characteristic thermal-magnetic trip unit, making it appropriate for circuits that experience high inrush currents. The device provides short-circuit breaking capacities of up to 42 kA at 12–133 V AC and 30 kA at 220–240 V AC under EN/IEC 60947-2, plus 10 kA at 415 V AC under EN/IEC 60898-1, while also covering DC applications up to 180 V. Double tunnel terminals and dual standard compliance allow it to be used in both industrial and residential installations. The VisiTrip indicator helps locate the faulted circuit quickly, while the VisiSafe green strip confirms that contacts are physically open for safe downstream maintenance. Its fast-closing mechanism, independent of the toggle, contributes to a long service life, rated for 10,000 electrical and 20,000 mechanical cycles. The breaker has a 500 V AC insulation voltage and Class 3 limitation, which helps reduce downstream protection costs. It clips onto a 35 mm DIN rail, occupies six 9 mm pitches (54 mm wide), and measures 85 × 54 × 78.5 mm with a net weight of 0.375 kg. It offers IP20 terminal protection, operates from -35 °C to +70 °C, and comes in white (RAL9003). With pollution degree 3, overvoltage category IV, and a 54% recyclability potential, it is a durable and sustainable solution for three-phase circuits.
