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High Current Air Circuit Breakers

High current air circuit breakers operate in atmospheric air conditions providing overcurrent and short-circuit protection for circuits rated from 800 A to 6300 A, and are used as a feeder and coupler within the electrical distribution system. Schneider Electric MasterPact air circuit breakers integrate monitoring for energy efficiency offering maximum safety. MasterPact ACBs have been designed with easy installation and retrofitting in mind. Featuring powerful MicroLogic control units, MasterPact delivers protection and performance for your electrical distribution system.

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  • Future Ready MasterPact MTZ

    Integrate seamlessly and improve uptime with MasterPact MTZ air circuit breakers and EcoStruxure energy and asset monitoring technologies.

    Explore MasterPact MTZ
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  • Optimize your electrical distribution design

    Explore the benefits of low-voltage (LV) selectivity, cascading and coordination for your electrical distribution design in our complimentary technical guide covering MasterPact MTZ air circuit breakers, ComPact NSX & NSXm molded case circuit breakers, Acti 9 miniature circuit breakers and more.

    Get the guide
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  • Digital modules for MasterPact MTZ

    Digital modules offer enhanced energy, power quality and crisis management. They can be included with initial purchase, installed as last minute changes during installation and commissioning, or added anytime during the lifetime of the breaker.

    Discover more on GoDigital store
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  • Electrical fire protection

    Across the globe, electrical fires cause significant damage to buildings of all sizes. These are just some of our solutions for electrical fire prevention. Explore the risk areas, discover protection tips and view our other solutions to help you design, build and install.

    Learn more about electrical fire prevention
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