Our molded case circuit breakers have multiple frame sizes to accommodate your required current ratings and breaking capabilities. These breakers provide protection of circuits against overload, short circuit, and ground fault. They can be combined with our NEMA and IEC motor starters, overload relays, and contactors.
Molded Case Circuit Breakers
140UT Molded Case Circuit Breakers
Our Bulletin 140UT-D molded case circuit breaker UL489 and IEC 60947-2 Listed circuit breaker are for global applications. The current-limiting circuit breaker provides fixed short-circuit and overcurrent protection and offers high interrupting ratings for 2- and 3-pole devices. These circuit breakers are suitable for back feeding at 240V and 480Y/277V.
140G Molded Case Circuit Breakers
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 provide the protection of circuits against overload, short circuit, and ground fault.
140U Molded Case Circuit Breakers
Rockwell Automation announces that as of March 2022, our Bulletin 140U Molded Case Circuit Breakers will be discontinued and no longer available for sale. We recommend you migrate to our Bulletin 140UT Molded Case Circuit Breakers.
These molded case circuit breakers are very compact and meet UL 489 and IEC 60947-2 MCCB up to 40A, as well as back feeding capability.
Learn more, Bulletin 140M to 140MT/UT Motor Protection Circuit Breakers Migration Profile.