Current-limiting circuit breaker offered by Rockwell Automation

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Current-limiting circuit breaker offered by Rockwell AutomationIndustrial automation customers can improve their short-circuit protection with a new line of current-limiting, molded-case circuit breakers from Rockwell Automation. The line expands the Allen-Bradley Bulletin 140G molded-case circuit breakers and offers more comprehensive, fast-acting, short-circuit protection.

The line expansion protects against overload, short-circuit and ground-fault conditions. The new line of circuit breakers is UL-listed as current limiting and reacts to circuit overloads two to three times faster than standard circuit breakers.

Scott Lasko, global product manager, Rockwell Automation says: “While all molded-case circuit breakers provide some level of energy limitation, our new current-limiting option is a high-performance circuit breaker. These current-limiting breakers have the ability to more quickly recognise and react to a short circuit – helping protect equipment from damage and expensive downtime when there is a sudden increase in current.”

The new line can help engineers achieve higher short-circuit ratings in the control panel as a result of their current-limiting ability. In areas where there is a high fault, the current-limiting circuit breaker can reduce the energy let through by more than 50 per cent. This current limitation results in less stress and potential damage to downstream components.

For more information about Rockwell’s short-circuit protection products, visit

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