The A9F55125 is a 25‑ampere, single‑pole miniature circuit breaker from Schneider Electric’s Acti9 iC60H series, tailored with a D‑curve tripping characteristic (magnetic threshold at 12 × In). This D‑curve design is specifically engineered for circuits that draw heavy inrush currents – such as industrial motors, hoists, transformers, solenoid actuators, and capacitor banks – where traditional B‑ or C‑curve breakers would be prone to unwanted tripping. Rated at 25 A, this MCB delivers reliable protection against both overloads and short‑circuits, with a robust ultimate breaking capacity of 15 kA at 220‑240 V AC under the EN/IEC 60947‑2 industrial standard, and 10 kA at 240 V AC per the EN/IEC 60898‑1 residential norm. Its dual‑standard compliance ensures seamless deployment across factory floors, commercial buildings, and domestic distribution boards. The breaker incorporates the user‑friendly VisiTrip window, which instantly reveals the tripped pole to shorten fault‑finding downtime, and the VisiSafe green strip that provides a visible, verifiable proof of contact opening – an indispensable safety feature for maintenance teams. The quick‑make/quick‑break mechanism, independent of the toggle handle, guarantees consistent performance over 10,000 electrical and 20,000 mechanical cycles. With a compact 18 mm width (2 modular pitches) and DIN‑rail clip‑on mounting, it maximises panel space. The double‑tunnel terminals accept both rigid and flexible conductors up to 25 mm², and the device operates flawlessly from -35 °C to +70 °C. Sustainability is addressed through halogen‑free plastics, PVC‑free construction, 54% recyclability, and a transparent lifecycle carbon footprint of 17 kg CO₂ eq., reflecting Schneider Electric’s commitment to eco‑responsible energy distribution.
