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What size fuse would we suggest for a ATV320 to protect the +24v circuit ?

Issue:  
Customer has a  ATV320 drive and wants to place a fuse in the 24v circuit to protect the drive,  if there is a short or something, that might take out the 24v supply.  He was asking what size fuse we would recommend for this?

Product Line:
ATV320
 
Environment:
24v supply
 
Cause:
n/a
 
Resolution:
Engineering response:
The drive limits the current to around 200 mA.
If he does not need much current, he could get a fuse for 100 mA or 150 mA.
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