Current Limiting Fuse Application Information

[wbd]

Hello,
I'm looking for information on applying current limiting fuses, particularly for arc flash hazards. The IEEE Red Book only contains a very brief discussion of CLFs. Does anyone have any links to resources?
Thank You
wbd

 

[dpc]

I'd check with Bussman and Ferraz Shawmut. They definitely have a bias, but they have good test data and other technical information on CLFs and arc-flash. The Bussman website has a number of technical papers available.

When considering CLFs for arc-flash protection, the biggest issue is making sure there is enough short-circuit current available to get the fuse into its current-limiting range. If the fuse takes longer than 1/2 cycle to operate, it isn't current-limiting.