Motor disconnects are more than simple on-off devices to satisfy lockout-tagout requirements. They have become an integral part of the motor control circuit as disconnects increasingly offer control functions, such as auxiliary contact interface, added selector switches and push buttons. Disconnects can be fusible or non-fusible and can have different pole arrangements and environmental ratings. Multiple disconnects can be packed into one enclosure, saving space and cost while allowing you to address varied requirements, including harsh food processing or washdown applications.

This technical paper discusses the specification steps you should keep in mind when selecting a motor disconnect, as well as the various electrical, installation and enclosure options that will determine how your disconnect functions in its operating environment.

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