Gs5556 9-4-2017
The second reason (I’m guessing): the fuse makers cannot or will not supply technical data such as time-current curves, interrupt rating, melting, and UL approval numbers.
That’s an excellent point, IMO. I’m not sure how a design can be created in an intelligent manner, that would assure long-term reliability as well as good performance, without comprehensive technical data on the parts that are being used.
Another possibility, it seems to me, relates to expenses the manufacturer might end up having to pay under the warranty coverage he provides, to replace blown fuses. In the past two years or so there have been at least seven different members, and perhaps more, who reported in the SR Red Fuse thread that SR fuses had blown unnecessarily, often soon after being installed. In at least one or two of those cases the fuse that blew even had a higher current rating than the stock fuse. Why would a manufacturer want to risk both the expenses and the damage to the reputation of his company that might result, given also that there may be ambiguity as to whether a failure is the fault of the fuse, or the fuse being overstressed by the design of his equipment.
Regards,
-- Al