Catalogs > Industrial Controls Catalog > Motor Control, IEC > Motor Protection Circuit Breakers and Motor Circuit Protectors > Bulletin 140M Motor Protection Circuit Breakers
Bulletin 140M Motor Protection Circuit Breakers
| Introduction |  |
Standards Compliance and Certifications | |
Cat. No. Explanation | |
Wiring Diagrams | |
Product Selection — Motor Protection Circuit Breakers | |
| Application Ratings | |
Accessories | |
Specifications | |
Approximate Dimensions | |
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3-Phase Power Supply
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Type E and Type F Combination Motor Controllers
Most of the 140M-C…F motor protection circuit breakers are UL listed as a manual Type E self-protected combination motor controller. Although there are many tests involved, one of the critical tests a self-protected combination motor controller must pass, is to perform 6000 electrical ops. and an additional 4000 mechanical ops. after a short circuit.
By definition, a Type F combination motor controller consists of a Type E manual self protected combination motor controller and a magnetic or solid-state motor controller (such as a Bulletin 100-C contactor or an SMC). As with a manual Type E self-protected combination motor controller, additional short-circuit protection is not required for the individual motor circuits.
A combination of a Bulletin 140M manual self protected combination motor controller and 100-C contactor can be listed as a Type E self-protected combination motor controller. In this case, both the 140M and 100-C must pass the additional 6000 electrical and 4000 mechanical operational test. In some cases, this may require over sizing of the Bulletin 140M MPCB or the 100-C contactor to achieve weld free performance and meet the additional life requirements.