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MCCBs - Power Defense Highlighted

Molded Case Circuit Breakers

Reliable and safe circuit protection

Eaton’s broad molded case circuit breaker (MCCB) portfolio provides you safety and reliability across the globe in various industries.

Our MCCBs provide you unmatched circuit protection in alternative energy, commercial, industrial, mining, and military applications when protecting conductors against overloads and short circuits. 

These circuit breakers are applied in panelboards, switchboards, motor control centers, control panels, combination starters, individual enclosures, and bus duct plug-in units.  Choose from a selection of Eaton MCCBs ranging from 10 – 3,000 amps.

Introducing the Power Defense MCCB

Our most technologically advanced, globally rated circuit breaker. PROTECTED ● CONNECTED ● GLOBAL

Our molded case circuit breaker portfolio

Eaton offers the most comprehensive MCCB portfolio.

Designed for electrical and machinery OEMs serving a wide range of industries and applications, these proven designs incorporate the latest in innovation and reliability, which has been our hallmark since the advent of the circuit breaker in the 1920s.

View our MCCB portfolio below.

Operators in power station control room
MCCBs - protecting your vital systems

Power Defense molded case circuit breaker

The Power Defense molded case circuit breaker is globally rated in a small footprint.  It offers communicating electronic trip units and the ability to generate the data to help you optimize your facilities' performance.

Amperage Rating: 15A - 2,500A

Poles: single, two, three, four (0% N, 60% N, 100% N)

Voltage Rating: 240 Vac, 415 Vac, 440 Vac, 480 Vac, 525 Vac, 600 Vac, 690 Vac, 125 Vdc, 250 Vdc

Series C molded case circuit breaker

The Series C circuit breaker was originally introduced in the 1980's and is widely utilized in Eaton's panelboards, switchboards, motor control centers, and busway applications. Choose from a premier selection of trip units including thermal magnetic, electronic, and magnetic only switches.

Amperage Rating: 10A - 2,500A 

Poles:  Single, two, three, four (0%N, 50%N, 100%N)

Voltage Rating:  240 Vac, 415 Vac, 440 Vac, 480 Vac, 525 Vac, 600 Vac, 690 Vac, 125 Vdc, 250 Vdc

 

Series G molded case circuit breaker

The Eaton Series G molded case circuit breaker delivers superior circuit breaker performance with high-speed “blow-open” action. This globally-rated platform offers users high interruption ratings in a compact footprint with the ease of in-field configuration.

Amperage Rating:  15A - 2,500A

Poles:  Single, two, three, four (0%N, 50%N, 100%N)

Voltage Rating:  240 Vac, 415 Vac, 440 Vac, 480 Vac, 525 Vac, 600 Vac, 690 Vac, 125 Vdc, 250 Vdc

PV Guard / Solar complete molded case circuit breaker

Eaton's DC and PVGard molded case circuit breakers are engineered to address the highest performance requirements while providing numerous accessories to fit different site specifications.  Today’s DC circuit breakers have expanded applications including solar photovoltaics, electric vehicle charging stations, battery storage and UPS systems, as well as commercial and industrial DC distribution.

Aperage Rating:  30A - 600A

Poles:  Three, four

Voltage Rating:  600 Vdc - 1,000 Vdc

NZM molded case circuit breaker

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.

Amperage Rating:  15A - 1,600A

Poles:  Single, three, four

Voltage Rating:  240 Vac, 415 Vac, 440 Vac, 480 Vac, 600 Vac, 690 Vac, 125 Vdc, 250 Vdc, 600 Vdc, 1,000 Vdc, 1,500 Vdc

Engine Generator molded case circuit breaker

Users appreciate the custom design and compact footprint of the Eaton Engine Generator molded case circuit breaker. This circuit breaker is specifically created for generators as well as portable and temporary power applications where lower interrupting currents are common. 

Amperage Rating:  15A - 1,200A

Voltage Rating: 240 Vac, 480 Vac, 600Vac

Circuit Breaker Type:  FG, KG, LG, NG, VG

E2 mining molded case circuit breaker

The Eaton E2 Mining molded case circuit breaker offers a higher quality experience and a safer work environment. Rugged design and tested dependability for harsh and hazardous environments make the E2 Mining MCCB the ideal breaker underground. The mining circuit breaker protects all sizes of trailing cable defined by MSHA.

Amperage Rating:  3A - 2,000A

Poles: Two, three 

Voltage Rating:  240 Vac, 480 Vac, 600 Vac, 1,000 Vac, 1,200 Vac, 250 Vdc

Navy & Marine complete molded case circuit breaker

Navy and marine molded case circuit breakers are vibration tested, fire and moisture-resistant, and treated to resist corrosion. Users will appreciate the shock and impact resistance, and the easy on-site customization and installation capabilities. These circuit breakers are qualified to Navy Mil-Spec & QPL, or to Marine Specs.

Amperage Rating:  5A = 800A

Poles:  Single, two, three

Voltage Rating:  1125 Vac, 500 Vac, 125 Vdc, 250 Vdc

General DC molded case circuit breaker

The Eaton DC breaker family is engineered to address the highest performance requirements while providing numerous accessories to fit different site specifications. Today’s direct current applications have expanded to include solar photovoltaics, electric vehicle charging stations, battery storage and UPS systems, as well as commercial and industrial DC distribution.

Amperage Rating: 15A - 3,000A

Poles: Single: two, three, four

Voltage Rating: 125 Vdc, 250 Vdc, 500 Vdc, 600 Vdc, 750 Vdc

Would you prefer the print version of Eaton's molded case circuit breaker catalog?

The catalog is available to download.

Selecting the right molded case circuit breaker by industry.

Use the chart below to help you find the right circuit breaker for your project.
Eaton molded case circuit breakers by industry

Typical molded case circuit breaker applications

  • Machine tool control panels and motor control centers
    Designed for these equipment requirements, including accessories.
  • Panelboards
    As both main and branch circuit protection devices. Feeder Pillars In distribution systems to provide main and branch circuit protection.
  • Switchgear
    In distribution systems to provide main and branch circuit protection up to 2500 amperes (RG-Frame)
  • Busbar trunking tap-offs
    In busbar trunking tap-offs to provide circuit protection.
  • Individual enclosures
    Completely assembled in enclosures to meet specific customer requirements.
  • Additional applications
    Special versions of each Eaton frame are available to provide safe equipment control and protection in mining and other applications. Contact your Eaton agent or distributor for additional information.
Typical MCCB Applications