Below the 1KV is a low voltage fuse, 3.6KV or above is called a medium voltage or high voltage fuse.
Low voltage fuse:
Semi enclosed fuse RC series
RM series without filler seal
Screw type fuse - RL series
There is a filling enclosed type fuse - RT series
Close tube type quick fuse with filler - RS series
High voltage fuse
RN2, RN3 -- indoor RN1, RN4, RN5, RN6......
Outdoor - RW3-10 (G), RW4-10 (G), RW5-35, RW7-10, RW10-35, RW11-10......