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Circuit breakers

Eaton’s low and medium-voltage circuit breakers provide premium protection for overheating wires, overloads and short circuits in residential, commercial, industrial and hazardous area applications.

Introducing our most technologically advanced breakers

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Go to 1U Series Slimline
1U Series Slimline

1U Series Slimline

Go to BAB bolt-on miniature circuit breakers
BAB bolt-on miniature circuit breakers

BAB bolt-on miniature circuit breakers

Go to BR Circuit Breakers
BR Circuit Breakers

BR Circuit Breakers

Go to CH Circuit Breakers
CH Circuit Breakers

CH Circuit Breakers

Go to Clamped EBMXB Explosionproof Circuit Breakers
Clamped EBMXB Explosionproof Circuit Breakers

Clamped EBMXB Explosionproof Circuit Breakers

Go to Classified Circuit Breakers
Classified Circuit Breakers

Classified Circuit Breakers

Go to DS/DSII circuit breakers
DS/DSII circuit breakers

DS/DSII circuit breakers

Go to Eaton E2 mining molded case circuit breaker
Eaton E2 mining molded case circuit breaker

Eaton E2 mining molded case circuit breaker

Go to Eaton Navy and Marine circuit breakers
Eaton Navy and Marine circuit breakers

Eaton Navy and Marine circuit breakers

Go to Eaton PV Guard / Solar molded case circuit breaker
Eaton PV Guard / Solar molded case circuit breaker

Eaton PV Guard / Solar molded case circuit breaker

Go to EBMB Explosionproof Circuit Breakers
EBMB Explosionproof Circuit Breakers

EBMB Explosionproof Circuit Breakers

Go to EFD and EFDC Explosionproof Circuit Breakers
EFD and EFDC Explosionproof Circuit Breakers

EFD and EFDC Explosionproof Circuit Breakers

Go to EIB Explosionproof Compact Circuit Breakers
EIB Explosionproof Compact Circuit Breakers

EIB Explosionproof Compact Circuit Breakers

Go to Energy management circuit breaker
Energy management circuit breaker

Energy management circuit breaker

Go to Engine generator molded case circuit breakers
Engine generator molded case circuit breakers

Engine generator molded case circuit breakers

Go to FAZ cable-in cable-out
FAZ cable-in cable-out

FAZ cable-in cable-out

Go to FLB Explosionproof Circuit Breakers
FLB Explosionproof Circuit Breakers

FLB Explosionproof Circuit Breakers

Go to Heavy Duty Circuit Breakers
Heavy Duty Circuit Breakers

Heavy Duty Circuit Breakers

Go to High Amp Circuit Breakers
High Amp Circuit Breakers

High Amp Circuit Breakers

Go to Magnum circuit breakers
Magnum circuit breakers

Magnum circuit breakers

Go to Main Circuit Breakers
Main Circuit Breakers

Main Circuit Breakers

Go to MDBS-4Ph Series
MDBS-4Ph Series

MDBS-4Ph Series

Go to Medium-voltage generator breakers
Medium-voltage generator breakers

Medium-voltage generator breakers

Go to Medium-voltage mining circuit breakers
Medium-voltage mining circuit breakers

Medium-voltage mining circuit breakers

Go to Medium-voltage VCP-T vacuum circuit breakers
Medium-voltage VCP-T vacuum circuit breakers

Medium-voltage VCP-T vacuum circuit breakers

Go to Medium-voltage VCP-W vacuum circuit breakers
Medium-voltage VCP-W vacuum circuit breakers

Medium-voltage VCP-W vacuum circuit breakers

Go to Medium-voltage VCPW-HD vacuum circuit breakers
Medium-voltage VCPW-HD vacuum circuit breakers

Medium-voltage VCPW-HD vacuum circuit breakers

Go to Medium-voltage wind circuit breakers
Medium-voltage wind circuit breakers

Medium-voltage wind circuit breakers

Go to NCB Non-metallic Circuit Breakers
NCB Non-metallic Circuit Breakers

NCB Non-metallic Circuit Breakers

Go to NZM molded case circuit breakers
NZM molded case circuit breakers

NZM molded case circuit breakers

Go to OEM components product portfolio
OEM components product portfolio

OEM components product portfolio

Go to Power Defense insulated case circuit breaker
Power Defense insulated case circuit breaker

Power Defense insulated case circuit breaker

Go to Power Defense molded case circuit breaker
Power Defense molded case circuit breaker

Power Defense molded case circuit breaker

Go to Power Xpert Protection Manager
Power Xpert Protection Manager

Power Xpert Protection Manager

Go to Power Xpert Protection Manager (PXPM)
Power Xpert Protection Manager (PXPM)

Power Xpert Protection Manager (PXPM)

Go to QC cable-in cable-out
QC cable-in cable-out

QC cable-in cable-out

Go to Series C molded case circuit breaker
Series C molded case circuit breaker

Series C molded case circuit breaker

Go to Series G molded case circuit breaker
Series G molded case circuit breaker

Series G molded case circuit breaker

Go to Series NRX circuit breakers with Digitrip
Series NRX circuit breakers with Digitrip

Series NRX circuit breakers with Digitrip

Go to STE Encapsulated Hazardous Area Main Breakers
STE Encapsulated Hazardous Area Main Breakers

STE Encapsulated Hazardous Area Main Breakers

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Molded case circuit breakers

Eaton's molded case circuit breakers provide unmatched circuit protection and safety in countless applications. 

Take a look at all of Eaton's molded case circuit breakers. Find out about our latest and greatest MCCB. Discover which MCCB is the right for for your usage in your industry. Review the typical molded case circuit breaker application structure.

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Circuit breaker fundamentals

Are circuit breakers new to you? We built a web page that will help get you learn the basics on circuit breakers.

What are circuit breakers and how do they work? Discover how circuit breakers function, the main components of circuit breakers and how they differ from fuses. Get all of the fundamentals of circuit breakers.

Eaton circuit breakers

Eaton’s complete line up of low and medium-voltage circuit breakers provide circuit protection in alternative energy, commercial, industrial, mining, and military applications, while protecting against overloads and short circuits in conductors.

Our circuit breakers are applied in panelboards, switchboards, motor control centers, control panels, combination starters, individual enclosures, and bus duct plug-in units.

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Eaton circuit breaker types