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NSX400/630 3P

The Schneider Electric NSX400/630 3P refers to a 3-pole circuit breaker from the Compact NSX series, spanning two frame sizes: the 400A frame (NSX400) and the 630A frame (NSX630). These are high-performance molded case circuit breakers (MCCBs), often categorized as compact air circuit breakers due to their advanced features and higher current range. They are designed for main distribution and critical feeder protection in industrial, commercial, and infrastructure applications.

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Specifications Parameter Specification for NSX400 Specification for NSX630 Product Series Compact NSX (Masterpact NSX) Frame Designation NSX400 NSX630 Max. Rated Current (Iu) 400 A 630 A Number of Poles 3 Poles (3P) Rated Voltage (Ue) Up to 690 V AC Insulation Voltage (Ui) 1000 V AC Breaking Capacity (Icu @ 400V) 50 kA, 70 kA, 100 kA, 150 kA (Selectable via trip unit & model variant) Trip Unit Types Thermal-Magnetic (TM) or Electronic (Micrologic 2.0/5.0/6.0/7.0) Mounting Type Fixed (F) or Plug-in/Draw-out (P) versions available Connection Front or Rear Short-Time Withstand (Icw) Typically 25 kA to 65 kA for 1s (model dependent) Standards IEC 60947-2, UL 489, CCC, CE Width (3P) ~105 mm (Fixed, TM) ~158 mm (Fixed, Electronic) ~158 mm (Fixed)