AB Bulletin 140MT Motor Protection Circuit Breaker(MPCB)

The Allen-Bradley Bulletin 140MT Motor Protection Circuit Breaker (MPCB) is designed to provide cost-effective short-circuit protection for motor loads across various sizes and installation types. It integrates seamlessly with NEMA/IEC motor starters, contactors, and overload relays to form three-element starter assemblies. Enhanced with higher interrupting ratings, the 140MT eliminates the need for additional branch-circuit protection in assembled starters. Its tap-conductor ratings enable smaller conductors in group motor installations, reducing wiring costs.