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600 Amp Fuses, FREE

August 3rd, 2020, 5:35 pm

I know none of you have any actual use for one of these, but it could be fun so show people what it takes to run your system. All 15 Watts of it. The body of each is 8.5 inches long. Let me know if you'd like one.

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Re: 600 Amp Fuses, FREE

August 3rd, 2020, 6:10 pm

200,000 amp? Really?

Re: 600 Amp Fuses, FREE

August 3rd, 2020, 6:30 pm

?

Re: 600 Amp Fuses, FREE

August 3rd, 2020, 7:17 pm

Pelliott321 wrote:200,000 amp? Really?

That is not the fusing current. It is the capacity of the fuse to break the current if the fuse value is exceeded. A fuse like this could very well be connected to a supply line that could produce 100 times the rated current or more on a dead fault. If the fuse cannot interrupt the resulting arc when the fuse element melts, current may continue to flow. That could be catastrophic. Fuses like this have the conducting element encased in a granular silica. When the fuse blows, the silica melts, absorbing heat and essentially melting into glass which further stops the arc.

When specifying or replacing fuses, you have to be cautious to consider interrupting capacity. I have seen people replace a 20 amp ABC fuse that has a similar construction in a piece of electronics with a 32 volt rated AGC fuse of the same amp capacity that is simply a piece of fuse wire in an glass tube. There is a high probability that if the AGC fuse blows it may not be able to suppress the resulting arc.

Re: 600 Amp Fuses, FREE

August 4th, 2020, 8:22 am

Tell us the story, what were you thinking when you got those?

Re: 600 Amp Fuses, FREE

August 4th, 2020, 8:35 am

My business is buying and selling industrial electrical surplus. Not much of a story, but it pays the bills.
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