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I wouldn't look at it that way, it doesn't seem necessary.I suppose so, in some senses, but 'pulling fuses' under load is primarily a hazard to the person trying to do it, rather than a reflection of the inability of the device to 'break' its rated current. To put it another way, 'breaking capacity' is not really a characteristic (or intended use) of fuses.
Kind Regards, John
- a fuse carrier is an isolator, as the fuse can be removed and the carrier replaced and sealed
- the definition of breaking capacity is the maximum current a device is designed to open.
- a fuse cannot be pulled with any load, therefore the breaking capacity is zero.
This isn't like a "divide by zero" situation, it's just logical. Although I'll admit that makers will describe that situation as "do not pull under load" rather than "breaking capacity zero"
(for completness, of course the fuse itself itself has a fault breaking capacity, but we're not talking about that mode of operation)