HRC fuse type F1 & F2

[Blown Fuse]

Hi
Quick question about industrial HRC fuses, you can get Type F1 and Type F2 fuses, can anyone tell me what the difference between F1 & F2? Is there a site where I could find out more about them?

Cheers, Steveo

 

[thepurple1]

Have A look at this
http://www.neweyandeyre.co.uk/pdf/Newey Fuses Cat 2006 Full Cat.pdf