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    Masterpact NT

    High current air circuit breakers up to 1600 A in a unique compact size

    Masterpact NT is a comprehensive range of air circuit breakers designed to protect electrical systems from damage caused by overloads, short circuits and equipment ground faults. Embedding Micrologic control units, it contributes to safety and energy efficiency. The range covers ratings from 630 to 1600 A in one unique compact size.

    High Current Air Circuit Breakers
    • Features

      The concentrated know-how for high current circuit breakers

      Masterpact NT circuit breakers are equipped with Micrologic control units that offer built-in power and energy metering in addition to basic or advanced protection functions. The Masterpact NT air circuit breaker is the smallest in the world, featuring compact dimensions in one size from 630 to 1600 A, with breaking capacity from 42 to 150 kA. The range comes with a wide choice of standardized accessories. The universal design of the Masterpact circuit breaker line allows most accessories to be across the entire line. It enables standardization of electrical switchboards by providing peace of mind in terms of choice, installation, and operation.


      • Rated current: 630 to 1600 A
      • Breaking capacity: 42 to 150 kA at 220/415 V AC
      • Voltage rating: up to 690 V AC
      • 1 unique physical size
      • Draw out and fixed mount
      • 3-pole and 4-pole construction
      • Electronic Micrologic control units, integrating current, voltage, power and energy metering enabling energy-management, earth leakage protection, and other advanced protection or network analysis functions
      • Switch disconnectors version available
      • Optimized range of field-installable auxiliaries and accessories
      • Different offers complying with different international standards: IEC 60947, UL489, ANSI/UL1066
      • CCC, EAC and other local certifications
      • Compliance with specifications of marine classification companies: Bureau Veritas, Lloyd’s Register of Shipping, Det Norske Veritas, etc.


      Masterpact NT circuit breakers contribute to reliability and continuity of service of your electrical installation thanks to:


      Optimized safety

      • Faultless protection
      • Increased uptime with improved coordination with Micrologic electronic trip unit adjustability
      • Complete selectivity and coordination
      • High resistance to environmental stresses

      Integrated monitoring for energy efficiency

      • Improved uptime with complete monitoring solution in Smart Panels
      • Seamless integration enabling users access to circuit breakers data in real time with a mobile device or a PC
      • Local and remote communication with trip cause (earth leakage, overload, short-circuit) and alarms (earth leakage, overload) allowing proactive operational and energy efficiency
      • Advanced Micrologic control unit can assist in providing corrective, preventive and predictive maintenance and energy management to identify potential savings

      Seamless installation

      • Compactness
      • Standardized range of auxiliaries and accessories
      • Wide range of online and offline software tools that improve productivity at all stages of your project (Ecoreal, Ecodial, MyPact, Ecoreach)


      Masterpact NT is a part of EcoStruxure™ Power – Schneider Electric’s open, interoperable, IoT-enabled system architecture.


      General applications in all types of low voltage electrical installations

      Suitable in most applications for protection, measurement, monitoring and quality of energy, including generator protection and motor protection, in standard applications and specific applications demanding high performance, including:

      • Industry: mining operations, minerals, metals, and cement production, water & wastewater industry, automotive, food and beverage, etc.
      • Oil & Gas extraction and processing, Chemicals industries
      • Data centers infrastructure
      • Healthcare infrastructure, hospitals
      • Marine and offshore industry
      • Infrastructures: airports, railways, subways, tunnels, power plants, etc.
      • Buildings: commercial buildings, hotels, offices
      • Wind turbines, solar, gensets

      Special applications

      • Navy (Masterpact NW & NT Navy)
      • UL 489 (Masterpact NW & NT UL 489 listed)
      • Source-changeover systems (Transferpact): service sector (hospital operating rooms, computer rooms, etc.), industry (assembly lines, ship engine rooms, etc.), infrastructures (runway, railway, etc.)


      • Micrologic control units for Masterpact range