Dear All,

Assume subject ITE product is to me marketed worldwide and has an inlet with
fuseholder. Fuse rating calculated at 3 A. The problem is that a 3 A fuse is
readily available in N. America as Listed 250 V/3 A but not readily  available
worldwide - in such locations IEC 127 type 250 V /3.15 A rating is readily
available.  Manufacturer intends to stock and ship units with a Listed 250 V 3
A fuse - stocking of two different fuses is a problem from the logistics side.

Question: What should the fuse rating markings be? Marking 250 V 3 A is good
for US and Canadian customers since they could go to the nearest supply store
and obtain a Listed fuse.  However, for European and other customers, the fuse
rating marking can be misleading since IEC127 type fuses are rated at 3.15 A.

Do you all agree that a fuse rating marking is not required? Since most
fuseholders in appliance inlets can be opened only by means of a coin or other
tool, the fuse symbol can be marked adjacent to the fuseholder and the ratings
250 V 3 A (Noth America) and 250 V 3.15 A (other countries) can be explained
in the service manual. This is allowed in the 950 standard. This also
eliminates the need for the English/French user accessible cautionary
statement "CAUTION: For continued protection against risk of fire, replace
only with same type and rating of fuse" required by the US/Canadian deviations
which manufacturers have a tough time making room for such long statements. 

Peter Merguerian

 

 


 



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