The Schneider Electric Masterpact NSX250 is a premium four-pole molded case circuit breaker (MCCB) designed for critical power distribution in commercial, industrial, and infrastructure applications.
Parameters:
Parameter Value / Description
Product Line / Frame Size Masterpact NSX250
Rated Current (In) Up to 250 A (Fully adjustable via the electronic trip unit).
Number of Poles 4 (L1, L2, L3, N)
Breaking Capacity Must be specified (N, S, H, L). Common choice: H (100 kA Icu at 415V).
Rated Ultimate Breaking Capacity (Icu) e.g., 100 kA at 415V AC for H rating (IEC 60947-2).
Rated Operational Voltage (Ue) Up to 690 V AC
Trip Unit (A-Type Advanced) Micrologic Electronic Trip Unit (e.g., 6.0A, 7.0A). Features:
• Protection: Adjustable L, S, I, G (Ground Fault).
• Measurement: Advanced metering (current, voltage, power, energy, power factor, harmonics).
• Communication: Embedded communication ports (Ethernet, Modbus TCP, etc.) for direct integration.
Communication Native, multi-protocol support in "A" units for connection to BMS/SCADA and EcoStruxure Power.
Standard IEC 60947-2
Mounting Withdrawable (standard, with racking mechanism) or Fixed.
Connection Front or Rear (depends on kit).
Width Approx. 220 mm (for 4-pole withdrawable unit).
Neutral Configuration Typically 4P4D (all poles protected) or 4P3D (neutral switched but not protected).