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How to size a safety switch for use ahead of a variable frequency drive (VFD)?

Issue:
Selecting the appropriate current rating for a safety switch

Product Line:
Safety Switches

Environment:
Motor applications

Cause:
Selection of switch by horsepower rating can cause oversize

Resolution: 
A safety switch used upstream of a variable frequency drive (VFD) should be sized based on the line current requirements of the particular VFD.
VFD line current requirements will be based on the FLA of the motor being used in the application.

​More on Safety Switches here.
 
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