Our Bulletin 140G Molded Case Circuit Breakers have nine different frame sizes with a range of 10...3000 A to accommodate your required current ratings and breaking capacities. With a wide range of operators and accessories, these circuit breakers help protect circuits against overload, short circuit, and ground fault.
Offers 3- and 4-pole versions to support worldwide application
Includes high interrupting ratings from 18...100 kA in a compact device
Offers a wide range of operating mechanisms to fit a variety of panel configurations
Provides greater customization in trip units
Offers a wide range of accessories for global availability
Approved for global application: UL, CSA, CCC, and IEC performance interrupting/breaking capacity
Offers current-limiting option (H, J, and K frames) that provides half-cycle interrupt to limit let-through energy
Resources
Circuit Breaker Simulator Tool — This tool allows you to make a configuration, display signals, and conduct an operating simulation to learn more about 140G Molded Case Circuit Breakers and 140MG Motor Circuit Protectors.
From accessories to operators, watch an overview of the Molded Case Circuit Breaker family.
Video
Installing a UV Release
Video tutorial demonstrates step by step instructions to install a UV Release on a Bulletin 140G G-, H-, I-, and J-Frame Molded Case Circuit Breaker.
Video
Installing an Auxiliary Contact
Video tutorial demonstrates step by step instructions to install an auxiliary contact on a Bulletin 140G H- and J-Frame Molded Case Circuit Breaker.
Video
Installing a Shunt Trip
Video tutorial demonstrates step by step instructions to install a shunt trip on a Bulletin 140G G-, H-, I-, and J-Frame Molded Case Circuit Breaker.
Video
Installing a Rotary Operating Mechanism
Video tutorial demonstrates step by step instructions to install a rotary operating mechanism on a Bulletin 140G H- and J-Frame Molded Case Circuit Breaker.
Video
Installing a Flex Cable Flange Mount Operator
Video tutorial demonstrates step by step instructions to install a flex cable flange mount operator on a Bulletin 140G Molded Case Circuit Breaker.
Video
Installing a Trip Unit
Video tutorial demonstrates step by step instructions to install a trip unit on a Bulletin 140G H- and J-Frame Molded Case Circuit Breaker.
Video
Setting Up LCD Electronic Protection Modules
This video walks users through the process of setting up LCD electronic protection modules, available with N, NS and R frame 140G molded case circuit breakers.
Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.
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