‹50 kA short circuit current

CAT II
Single-phase receptacle connected loads.

‹10 kA short circuit current.

https://www.fluke.com/en-us/learn/blog/safety/multimeter-guide

What is rated breaking current in fuse?
The rated breaking current is the upper limit value of prospective current that a fuse is capable of safely breaking under test conditions defined in a standard.

When choosing a fuse, glass is a good option for applications where the probability of a high current episode isn’t likely to occur (compare the breaking capacity to the potential current the fuse may be subjected to)

Ceramic has a higher breaking capacity offering a greater level of thermal and arc protection better suited for applications where high current episodes may occur.

Can fuses with an AC voltage rating be used in a DC applications? DC and AC fuses cannot be used interchangeably. Fuses must be rated for the voltage AC or DC in which they will be used. Since many people will not remember which one can be used in place of the other, the prudent recommendation is to discourage any exchange, as a rule.

The serious problem of the two possible exchanges occurs when an AC fuse is used in a DC circuit.

Usually for fuses that have a DC voltage rating that is half of the maximum AC voltage rating.
DC fuses are designed to melt faster and create a much larger gap than AC fuses.
If there is no rating, generally 250V AC 5x20mm glass fuses are often okay for up to 60V DC.

Typically glass fuses are rated for 250V, some models for AC and DC, some only for AC.
The voltage rating of a fuse must be at least equal to or greater than the circuit voltage. It can be higher but never lower. DC fuses are relatively sophisticated devices that have a different construction as compared to simple AC fuses. DC fuses contain additional elements to extinguish the arc. For AC and DC fuses, standard rated voltages are different.

“So why are all fuses not made for DC then?”, you ask. The answer is almost predictable; Cost. AC fuses are simpler and thus cheaper to make. DC fuses often have a little spring to pull the remains of the melting element away from the initial gap. Alternatively, they are carefully constructed to burn at opposite ends simultaneously, in order for the midsection to drop away. A third option is to fill the fuse capsule with silica (sand). When the element melts, the silica granules will flow into the gap, acting to quench the arc in the now-ionised environment.

Can I switch one for the other?
With all specifications and safety ratings the same you should be able to go from glass to ceramic but I wouldn’t recommend replacing ceramic with glass.

Do ceramic fuses have a higher breaking capacity?
Ceramic has a higher breaking capacity offering a greater level of thermal and arc protection better suited for applications where high current episodes may occur.

Note the breaking capacity at rated voltage. The ceramic fuse is much higher at 100 amps compared to 35 amps for the glass fuse with the same AC voltage rating. The breaking capacity is the maximum current that can safely be interrupted by the fuse. A ceramic fuse offers better thermal and arc protection during a high current episode compared to a glass fuse with the same specifications.

What is the breaking capacity of a ceramic fuse?
Fast-Acting Ceramic Fuses – 10 different varieties available. All with a rated current ranging from 1/2A to 20A, a voltage rating of 250VAC, and a breaking capacity of either 35A, 100A, 200A, 750A, or 1500A.

The ceramic special fuses for multimeter can break up to tens of kiloamperes.

HRC (High Rupture Capacity) fuses used in high power equipment and multimeters even though some may look similar. Never replace an HRC fuse with one of these common glass or ceramic fuses. Search our specailty fuses 181 when looking for high power and multimeter fuse options.