Slow blow fuses?

[R3Jar]

I have been servicing x-ray machines for a long time and have always known slow
blow fuses to have a certain look. I have always seen them to be a thin wire
wrapped around some sort of foam support or white material within the fuse. I
recently ordered some 2 amp slow blow fuses and when I received them they
looked quite different. these fuses seem to hjust have a small wire and in the
middle of it there looks like a bead of metal. Are these the NEW type of slow
blow fuse? Can somebody enlighten me? Thanks

 

[Sir Charles W. Shults III]

Some slow blow fuses have the conductors under spring tension and a bead of
low melting solder at the juncture. When it gets hot, the two conductors slide
apart and the circuit opens.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip