The Schneider Electric Masterpact NSX100 MA 3P 100A is a compact, three-pole, 100A intelligent molded case circuit breaker (iMCCB) from the premium Masterpact NSX range. The “MA” designation is key, indicating it is equipped with a Micrologic “MA” electronic trip unit, which is Modbus Addressable. This device integrates fully adjustable protection, comprehensive energy measurement, and native Modbus RTU communication into a single, space-saving unit
Parameters:
Parameter Value / Description
Product Line / Frame Size Masterpact NSX100
Rated Current (In) 100 A (Fully adjustable via the Micrologic MA trip unit).
Number of Poles 3 (L1, L2, L3)
Breaking Capacity [Must be Specified] – Typically N (50 kA) or S (70 kA) Icu at 415V AC for this frame.
Rated Ultimate Breaking Capacity (Icu) e.g., 70 kA for S rating at 415V AC (IEC 60947-2).
Trip Unit Micrologic MA (Modbus Addressable). Core features:
• Protection: Fully adjustable Long-time (L), Short-time (S), Instantaneous (I) protection. Ground fault (G) is typically an optional add-on module (iVigi).
• Measurement: Comprehensive (Current, Voltage, Power (kW/kVA/kvar), Power Factor, Energy (kWh/kvarh)).
• Communication: Embedded Modbus RTU over RS-485 serial interface.
Communication Protocol Modbus RTU (native, built-in).
Rated Operational Voltage (Ue) Up to 690 V AC
Standard IEC 60947-2
Mounting Withdrawable (standard racking mechanism) or Fixed.
Connection Front or Rear (depends on kit).
Width Approx. 132 mm (for a 3-pole withdrawable unit).