The Schneider Electric Masterpact NSX250A 3P is a high-performance, three-pole molded case circuit breaker (MCCB) from the flagship Masterpact NSX range. The "A" designation typically indicates it is equipped with an advanced Micrologic "A-type" electronic trip unit (e.g., Micrologic 7.0A), which offers the highest level of integrated intelligence.
Parameters
Parameter Value / Description
Product Line / Frame Size Masterpact NSX250
Rated Current (In) Up to 250 A (Fully adjustable via the Micrologic A trip unit).
Number of Poles 3 (L1, L2, L3)
Breaking Capacity [Must be Specified] – N (50kA), S (70kA), H (100kA), L (150kA) at 415V.
Rated Ultimate Breaking Capacity (Icu) Depends on chosen rating (e.g., 100 kA for H rating at 415V AC).
Trip Unit Micrologic A-Type (e.g., 7.0A). Features:
• Protection: Fully adjustable L, S, I, G (Ground Fault).
• Measurement: High-accuracy metering (V, I, kW, kVA, PF, kWh, harmonics up to 31st).
• Communication: Multiple embedded ports (Ethernet, Modbus TCP, etc.) for direct, simultaneous connections.
Communication Native, multi-protocol, dual-port Ethernet support for seamless integration into EcoStruxure Power and other management systems.
Data Logging Extensive event and waveform recording for advanced diagnostics.
Standard IEC 60947-2
Mounting Withdrawable (standard, with racking mechanism) or Fixed.
Connection Front or Rear (depends on kit).
Width Approx. 165 mm (for 3-pole withdrawable unit).