The A9F53101 is a specialised 1‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60H family, engineered for ultra‑sensitive overcurrent protection in low‑power circuits such as control transformers, signal lines, and delicate electronic equipment. Featuring a B‑curve tripping characteristic with a magnetic threshold at 4x In, it offers precise discrimination for circuits with minimal inrush currents. What truly distinguishes this model is its exceptional short‑circuit breaking capability – delivering up to 70 kA (Icu) across a wide AC voltage range (12 V to 133 V) under the EN/IEC 60947‑2 industrial standard, making it one of the highest‑performance breakers in its class for low‑current applications. It also carries the EN/IEC 60898‑1 residential certification, ensuring versatility across both industrial panels and consumer units. The breaker is equipped with the VisiTrip fault‑finder window, which rapidly isolates the tripped circuit to minimise downtime, and the VisiSafe green indicator that confirms physical contact separation – a vital safety check for maintenance personnel. Its toggle‑independent fast‑closing mechanism enhances long‑term reliability, with a mechanical endurance of 20,000 cycles and electrical endurance of 10,000 cycles. The compact 18mm width (2 modular pitches) and DIN‑rail clip‑on design save valuable enclosure space, while the double‑tunnel terminals accept rigid conductors up to 25 mm². Operating flawlessly from -35 °C to +70 °C, this MCB also meets strict sustainability criteria: it is PVC‑free, halogen‑free in plastic parts, and boasts a 54% recyclability rate, with a transparent lifecycle carbon footprint of 14 kg CO₂ eq. – underlining Schneider Electric’s commitment to eco‑responsible energy distribution.
