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ComPact NSX

Circuit-breakers, to protect lines up to 630A

Part of Pact Series

Compact NSX is a full range of high performance molded case circuit breakers (MCCB) in 2 frame sizes designed to meet your needs from thermal-magnetic to advanced Micrologic trip units. This range will soon feature integrated earth leakage protection.

Compact NSX molded case circuit breakers (MCCB) 250 H 4P with Micrologic Vigi 7.2 E
  • Features

    The Compact NSX molded case circuit breaker (MCCB) range is designed to optimize space and breaking capacity. The range comes in two frame sizes with a variety of optional functions and accessories. 


    • Flexible installation: any position; switchboard or wall-mounted
    • Nominal current: 16 to 630 A
    • 9 Breaking capacities for the 2 sizes of circuit breakers:
      - up to 250 A: 25, 36, 50, 70, 100, 150, 200 kA at 415 V
      - up to 630 A: 36, 50, 70, 100, 150, 200 kA at 415 V
      - both size of circuit breakers with 75 & 100 kA at 690 V 
    • 1, 2, 3 and 4 pole versions available
    • Large range of electronic and thermal-magnetic protections
    • Advanced trip unit with integrated power metering: I, U, P, E, THD, f, CosPhi 
    • Interchangeable trip-units to upgrade your panel with smarter functions
    • Plug and ready wiring system and communicating accessories
    • Wealth of options for auxiliaries and accessories (field installable)
    • Integrated earth leakage protection via Micrologic Vigi coming soon in Q4 2018 (earth leakage circuit breaker - ELCB)

    For more information, download the Compact NSX & NSXm catalog

    Visit the Schneider Electric Electrical Calculation Tools to review, search and check curves, selectivity and cascading. Alternatively, download the Complimentary Technical Information catalog (PDF), which includes coordination tables.


    Easy and efficient
    • Two standardized frame sizes for your convenience
    • Save space, time and effort with integrated earth leakage protection (ELCB), available in Q4 2018, in the molded case circuit breaker (MCCB) frame size
    • Easy to swap trip units and standardized accessories over time
    • Wide range of online and offline software tools that help to improve productivity at all stages of your project (Ecoreal, Ecodial, MyPact, Ecoreach)
    Optimize safety

    • Highly resistant to environmental stresses
    • Roto-active breaking technology helps to reduce early aging effects and increase operation lifespan
    Measure and Communicate
    • Local and remote communication with trip alarm (earth leakage, overload, short circuit) and pre- alarms (earth leakage) allowing you to proactively increase operational and energy efficiency
    • Advanced Micrologic trip unit can assist in providing corrective, preventative and predictive maintenance and energy management to identify potential savings
    Working with communication devices, the Compact NSX inside our Smart Panels becomes an EcoStruxure connected product within our EcoStruxure Power architecture.


    An excellent choice for all standard and specific applications, including:

    • Standard applications: industries, buildings, infrastructures
    • Specific applications demanding high performance: marine, oil and gas extraction and processing, mining operations, metals and minerals production, and data centers
    • Source-changeover systems (Transferpact): service sector (hospital operating rooms, computer rooms, ), industry (assembly lines, ship engine rooms, etc.), infrastructures (runway, railway, etc.) 

    Ensures compliance with international standards (Find on Compact NSX certificate downloads):

    • IEC/EN 60947-1 and 2, IEC 60068-2-30 for type 2 tropicalisation, CCC, EAC and other local certifications
    • Compliance with specifications of marine classification companies: Bureau Veritas, Lloyd’s Register of Shipping, DetNorske Veritas and RINA


    • Compact NSX molded case circuit breaker (MCCB) 570-630 3P F/36kA with Micrologic 4.3 Vigi 570A
    • Compact NSX molded case circuit breaker (MCCB) 250B - Micrologic 5.2A
    • Molded Case Circuit Breakers
    • Installation of Compact NSX with integrated earth leakage protection (ELCB)
    • Compact NSX & NSXm molded case circuit circuit breakers (MCCB) in a smart panel
    • Remote Operated source changeover system ComPact NSX
    • Compact NSX molded case circuit breakers (MCCB) 250 H 4P with Micrologic Vigi 7.2 E
    • Real-time notification from earth leakage circuit breaker (ELCB)

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