http://www.forrestrace.com/fusing-glass/

What is the advantage to using a ceramic fuse in electronic equipment as opposed to a glass fuse?
I opened a control box for a boiler and found that the 125vac to 24dc transformer had a ceramic fuse. I was curious as to its attributes and differences from glass fuses.
While glass fuses have the advantage of a fuse element visible for inspection purposes, they have a low breaking capacity which generally restricts them to applications of 15 A or less at 250 VAC. Ceramic fuses have the advantage of a higher breaking capacity facilitating their use in higher voltage/ampere circuits. Filling a fuse body with sand provides additional protection against arcing in an overcurrent situation.
Fused Recycled Glass Alocasia Lamp