The Schneider Electric NSE400F/4 is an economical, four-pole, 400A molded case circuit breaker (MCCB) from the NSE (New Small Economy) series. The "F" suffix denotes its High breaking capacity.
Parameters:
Parameter Value / Description
Product Series / Frame Size NSE Series, 400A Frame (NSE400)
Rated Current (In) 400 A
Number of Poles 4 (L1, L2, L3, N)
Breaking Capacity High (F Rating)
Rated Ultimate Breaking Capacity (Icu) Typically 70 kA at 415V AC (IEC 60947-2).
Trip Unit Type Fixed Thermal-Magnetic (TM-D) – Standard, non-adjustable protection. Some models may offer adjustable magnetic trip (MA).
Rated Operational Voltage (Ue) Up to 690 V AC
Protection Functions • Thermal (Overload): Bi-metal element, inverse time characteristic.
• Magnetic (Short-Circuit): Instantaneous trip. No Ground Fault (G) protection.
Neutral Configuration Typically 4P4D (all poles protected) or 4P3D (neutral switched only).
Mounting Fixed mounting (standard for NSE series).
Connection Front connection with screw-clamp terminals.
Standard IEC 60947-2
Width Approximately 144 mm (for a 4-pole fixed version, compact design).