140G Molded-Case Circuit Breakers


The Allen-Bradley Bulletin 140G molded-case circuit breakers protect against overload, short circuit, and ground-fault conditions. 8 frame sizes span a current range of 15 to 3,000 A and a voltage range of 200 to 690V. All frame sizes are available in 3 and 4-pole versions.


The line features increased short-circuit protection with coordination available for motors from 0.1 to 630 kW, fault currents up to 150 kA, and operational voltages up to 690V. The circuit breakers enable quicker clearing of higher-level faults at a higher voltage. The interrupting capacity from 25 to 150 kA allows a single unit to address multiple applications, which helps reduce product stocking. They are IP20 finger safe, offer a wide array of available accessories, and feature a versatile dual-cage terminal design.


The extended line of flexible accessories includes auxiliary and trip-unit alarm contacts, wiring terminations, and electronic trip units from 20 to 3,000 A, allowing the product to meet the requirements of applications on a global basis.


  • Offers 3 and 4-pole versions to support worldwide application
  • Includes high interrupting ratings from 18 to 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
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