Circuit breakers

Eaton’s NZM portfolio provides a globally rated solution with a broad offering of circuit breakers, accessories, and IEC switch disconnector, ideal for panelbuilders and machinery OEMs worldwide. Thermal-magnetic and eletronic trip units from 20A to 1600A for power distribution and protection of motors, generators, transformers and other equipment.

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Overview Models Resources

Global Certifications

IEC / UL / CSA / CCC

Customization

Full complement of accessories

Compact NZM Series circuit breakers

Core features of NZM molded case circuit breakers

Compact breaker with four frame sizes with ratings from 20A up to 1600A.
Switching capacities up to 150 kA and operational voltages up to 690V.
Extensive list of accessories and multiple installation and connection options.
Worldwide approvals available including IEC, UL, CSA and CCC.
Available with thermal magnetic and electronic tripping technology, including options for on-board diagnostics with data logging capability, which allows for monitoring of critical circuits without additional hardware.
Discrete relay outputs available for high load warnings at 70%, 100% and 120%.

Ideal for panelbuilders and machinery OEMs worldwide

Eaton’s NZM Series molded case circuit breaker is suitable for global markets and provides a range of protection units including selective LSI electronic trip units, as well as motor protection with built-in single phase sensitivity.

Eaton's molded case circuit breaker portfolio

Eaton manufactures a variety of molded case circuit breakers designed for use in multiple industries and conditions. Take a look at our MCCB portfolio.

Molded case circuit breakers

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Catalogs

Molded case circuit breakers, Volume 4, Tab 2 - CA08100005E

This is the catalog describing Power Defense, Series G, Series C, specialty breakers and handle mechanisms.

(PDF 16 MB , 06/20/2025) Updated

Installation instructions

E-frame variable depth rotary handle mechanism

E-frame circuit breaker instruction leaflet for variable depth rotary handle mechanism

(PDF 1 MB , 06/30/2009)
PD3 400A 3P End Cap Kit Installation

IL012262ENH01

(PDF 4 MB , 12/13/2021)
PD4 Rear Connection.indd

(PDF 1 MB , 12/14/2021)
Power Defense Frame 2 Flex Shaft Assembly and Installation Instructions – IL12341EN

(PDF 4 MB , 12/09/2021)
Power Defense Frame 3 Flex Shaft Assembly and Installation Instructions – IL012340EN

(PDF 4 MB , 12/09/2021)

Manuals and user guides

Power Xpert Protection Manager quick start guide

(PDF 5 MB , 07/08/2024)

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.

NZM molded case circuit breakers