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NSX250N

The Schneider Electric NSX250N is a 3‑pole molded case circuit breaker (MCCB) designed for low‑voltage distribution and protection applications. It provides reliable protection against overload, short‑circuit, and electrical faults in three‑phase power systems.

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Specifications Parameter Specification Brand Schneider Electric Series Compact NSX Model / Type NSX250N Device Type Molded Case Circuit Breaker (MCCB) Number of Poles 3‑Pole (3P) Rated Current (In) 250 A at 40 °C Rated Operational Voltage (Ue) Up to 690 V AC (50/60 Hz) Rated Frequency 50 / 60 Hz Short‑Circuit Breaking Capacity (Icu) 50 kA at 380/415 V AC Ultimate Breaking Capacity (Icu) 90 kA at 220/240 V AC Rated Insulation Voltage (Ui) 800 V AC Rated Impulse Withstand Voltage (Uimp) 8 kV Trip Unit Options Thermal‑magnetic (TMD) or Electronic (MicroLogic) Protection Functions Overload, Short‑Circuit, (optionally ground fault with accessories) Utilisation Category Category A (distribution) Suitability for Isolation Yes (meets IEC/EN standards) Mounting Type Fixed installation in panels Connection Terminals Screw/clamp main terminals Application Protection of three‑phase circuits, feeders, and distribution systems