Slow Blow Ceramic Fuse is a type of fuse which can handle a temporary surge current which exceeds the current rating of the fuse.
Slow Blow Ceramic Fuse does not blow for a temporary surge current; it must receive a sustained elevated current above its current rating for a period of time before it blows. This is why it is called a slow-blow fuse.
High Breaking Capacity Fast Acting Ceramic Fuse in a compact 5 x 20mm Package designed to UL specification.