The Schneider Electric Acti9 iC60N A9F74304 is a three-pole miniature circuit breaker engineered for low-voltage distribution boards. It is rated at 4 A and employs a C-curve thermal-magnetic trip unit, so it responds to overloads and short circuits in circuits with moderate inrush currents. The device provides short-circuit breaking capacities of up to 50 kA at 220–240 V AC under EN/IEC 60947-2 and 6,000 A at 400 V AC under EN/IEC 60898-1. It complies with both industrial and residential standards. The VisiTrip indicator speeds up fault location, while the VisiSafe green strip confirms that the contacts are physically open for safe downstream maintenance. Its fast-closing mechanism, independent of the toggle, contributes to an extended service life, rated for 10,000 electrical and 20,000 mechanical cycles. The breaker has a 500 V AC rated 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 (IP40 when enclosed), 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 choice for three-phase circuits.
