The A9F53140 is a 40A rated, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60H line, featuring a B‑curve tripping characteristic that is perfectly matched for protecting high‑power branch circuits in mixed‑use environments – from industrial control panels to residential distribution boards. Its thermal‑magnetic trip unit provides a dual‑level defence: thermal protection against sustained overloads and instantaneous magnetic tripping (set at 4x In ±20%) for short‑circuit events, ensuring rapid fault isolation. This model is distinguished by its compliance with both the EN/IEC 60947‑2 industrial standard and the EN/IEC 60898‑1 household standard, making it a versatile choice for projects that require cross‑standard acceptance. Installation and maintenance are simplified by the VisiTrip window, which visually flags the tripped pole, and the VisiSafe green stripe, which offers undeniable evidence that the contacts are physically separated – a vital safety check before any downstream work. The toggle‑independent quick‑make/quick‑break mechanism ensures reliable switching even under frequent operation, backed by 10,000 electrical and 20,000 mechanical cycle ratings. Despite its robust 40A capacity, the device retains a compact 18mm width (2 modular pitches) and clips securely onto DIN rails, saving valuable panel space. The terminals are engineered for heavy‑duty wiring: rigid conductors up to 35mm² and flexible up to 25mm² are accepted, with a higher tightening torque of 3.5 N·m to ensure secure connections. Environmentally, the breaker operates across a wide temperature range (-35°C to +70°C) and is built with halogen‑free, PVC‑free plastics, achieving 54% recyclability. Its full lifecycle carbon footprint is quantified at 21 kg CO₂ eq., with transparent environmental disclosure – a testament to Schneider Electric’s commitment to sustainable energy management.
