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Looking for fast acting semiconductor fuses

Looking for fast acting semiconductor fuses

Looking for fast acting semiconductor fuses

(OP)
Hi,

We have an expensive piece of equipment that can withstand only about 4,000,000 A²s let through energy.

There is no circuit breaker fast enough to clear a fault that quick, so we would like to place a fused isolation switch right next to that device. The semi-conductor fuses should be rated 800A for the device.

Would you be able to point out an isolation switch and plugin fuses that can do this job?

RE: Looking for fast acting semiconductor fuses

Mersen (ex-Ferraz) have a useful guide to the types and ratings, but at 800A you might struggle to find a suitable switch-fuse. I suspect the best chance of finding a fuse and a compatible switch could be the BS88-4 series, which look like they're interchangeable with the regular types of similar rating.

http://www.gdrectifiers.co.uk/uploads/Mersen_Fuses...


RE: Looking for fast acting semiconductor fuses

I didn't know that existed.

The fast thing I think for arc flash is dropping a crowbar.

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