The Schneider Electric Compact NSX 400N is a 400 Amp, 3-Pole (3P) Moulded Case Circuit Breaker (MCCB) from the high-performance Acti 9 / Masterpact range. Featuring the robust NSX400 frame size and an N-type breaking capacity (50kA), it is engineered for reliable circuit protection, control, and isolation in demanding commercial, industrial, and infrastructure power distribution systems.
Specifications
Parameter Specification
Product Line / Range Acti 9 / Compact NSX
Frame Size / Rating NSX400
Number of Poles 3-Pole (3P)
Breaking Capacity Category N (Standard High Breaking Capacity)
Rated Ultimate Breaking Capacity (Icu) 50 kA at 415V AC (IEC 60947-2)
Rated Service Breaking Capacity (Ics) 100% of Icu (50 kA at 415V AC)
Rated Operational Current (In) 400 A
Rated Operational Voltage (Ue) Up to 690V AC / 250V DC
Trip Unit Type Must be specified.
• Micrologic 2.0/5.0/6.0/7.0 (Electronic) or
• Thermal-Magnetic (TM-D or TM-G) (Fixed). The "400N" indicates an N-level fixed magnetic or adjustable electronic unit.
Protection Functions • Overload (L)
• Short-Circuit (S)
• Ground Fault (G) - *with Micrologic 6.0/7.0*
• Measurement (I) - *with Micrologic 5.0/7.0*
Standards & Compliance IEC 60947-1 & 60947-2, CCC, CE, RoHS
Electrical Endurance Up to 20,000 operations at rated current (In)
Mechanical Endurance Up to 25,000 operations
Mounting Style Fixed, Plug-in, or Withdrawable (specify)
Connection Front or rear connection for busbars or cables (specific terminal kit required).
Control Rotary Handle (standard), with options for Motorized Mechanism (MCH), Under-Voltage Release (MN), or Shunt Release (MX).
Ambient Temperature -25°C to +70°C (operation)