[guest1632]

Just ahad a quick browse of the catalog.

3AG and M205 (plus some weirdos like size "00" etc) are all available in both ceramic and glass.

Also all available in:
Ultra Rapid
Quick Blow
Anti-Surge - has "spring" element in it or a plated wire

I generally use quick blow on DC rails of my amplifiers and anti-surge on the mains wiring because I use toroidal power transformers which have large magnetising current surge at switch on.

Always fuse both Active and Neutral of the mains wires so that whe ...