The Schneider Electric Compact NSX series 4-pole (3P+N) molded case circuit breakers in 100A and 160A ratings represent the premium tier of compact MCCBs. Designed for main and sub-distribution protection in three-phase four-wire systems, they provide superior performance, reliability, and flexibility for commercial, industrial, and infrastructure applications where neutral protection or complete circuit isolation is required.
Parameter NSX 4P 100A NSX 4P 160A
Product Series Compact NSX
Frame Designation NSX100 NSX160
Max. Rated Current (Iu) 100 A 160 A
Number of Poles 4 Poles (3P + N) – All poles protected.
Rated Voltage (Ue) Up to 690 V AC
Rated Insulation Voltage (Ui) 1000 V AC
Breaking Capacity (Icu @ 400V) 50 kA, 70 kA, 100 kA (Selectable via model suffix: N, H, L/S)
Trip Unit Types Thermal-Magnetic (TM) or Electronic (Micrologic 2.0/5.0/6.0)
Short-Time Withstand (Icw) Typically 10-15 kA for 1s (100A)
15-25 kA for 1s (160A)
Mounting Type Fixed (F) or Plug-in (P) versions available
Connection Front or Rear
Width (4P) ~140 mm (Fixed, TM)
~210 mm (Fixed, Electronic)
Standards IEC 60947-2, UL 489, CCC, CE