Our motor circuit protectors provide short-circuit protection for individual motor loads and are available for a wide range of motor sizes and installation types. They can be combined with our NEMA and IEC motor starters, overload relays, and contactors.
Motor Circuit Protectors
140MT Motor Circuit Protectors
Our Bulletin 140MT Motor Circuit Protectors (D9N version), rated up to 40A, can be applied in combination with Contactors and Overload relays.
140MG Motor Circuit Protectors
Our Bulletin 140MG Motor Circuit Protectors can provide a disconnecting means for motor branch circuit, branch-circuit and short-circuit magnetic protection, and manual switching. These devices are rated from 3...1200 A. In North America, electrical codes require that an individual motor branch circuit be protected by a UL/CSA Listed fuse, circuit breaker, or self-protected combination motor controller.
140M Motor Circuit Protectors
Rockwell Automation announces that as of March 2022, our Bulletin 140M Motor Circuit Protectors will be discontinued and no longer available for sale. We recommend you migrate to our Bulletin 140MT Motor Circuit Protectors.
These motor circuit protectors feature extended current range for C-frame (32A) and D-frame (40A) models. 140M F-frame products will remain available.
Learn more, Bulletin 140M to 140MT/UT Motor Protection Circuit Breakers Migration Profile.