Author Topic: Brymen 867s - mA, uA range - max. current  (Read 144 times)

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Offline bmdaly

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Brymen 867s - mA, uA range - max. current
« on: June 23, 2019, 10:07:50 pm »
The Brymen 867s multimeter has "MAX .6A" written on the jack for milli and micro amp range, but it has a .44A fuse on this current range.
Can anyone explain this convention?

 

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Re: Brymen 867s - mA, uA range - max. current
« Reply #1 on: June 23, 2019, 10:29:47 pm »
A fuse will carry its full rating for a very long time indeed and may never blow, so a fuse rated at .44A would likely carry that for ever. Fuses will typically take around at least 50% overload to blow instantly and so the rating of .6A max sounds about round right to me because if the take the .44A and apply a 25% overload, it come to .55A. That means that the fuse would be happy if required to carry .6A for a very long time, otherwise you'd be constantly buying some very expensive fuses for the slightest overload if they were designed to blow at the stated current. The meter is more then capable of withstanding that amount of energy.
Who let Murphy in?
 
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