Motor circuit protectors may provide the following protective and control functions. Disconnect for motor branch circuit. Branch-circuit, short-circuit protection (magnetic protection). Switching (manual). The 140M-C, D and F frame motor circuit protectors have one UL/CSA Listing - as manual motor controllers (with optional approvals for motor disconnect and group installation). In NEC/CEC Group Installations, these devices must be applied per the appropriate rules which require the use of an upstream branch-circuit, short-circuit protective device (BCPD). The 140M-C, D and F frame motor circuit protectors are also UL/CSA Listed, together with a Bulletin 100C contactor and Bulletin 193 overload relay, as part of our Bulletin 103T and 107T Self-Protected IEC Combination Starters. These starters are then able to provide all of the necessary NEC/CEC requirements for the protection and control of individual Motor Branch Circuits without additional protective devices.
