What is a rectifier fuse?

[David Nugent]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

 

[Ken Weitzel]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

Hi...

I kinda expect to be corrected, but I'm going to
tell you that they refer only to the fact that
they're fast blow fuses (as opposed to slow blow)

Take care.

Ken

 

[Art]

Could also be physical characteristic, that they physically appear to be a
rectifier, resistor, etc. rather than a glass type fuse device. ?? Like
some of the "chem fuses or pico fuses" now being used.

 

[H. Dziardziel]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

http://controlparts.com/siemens.relays/fuses.htm
http://www.kilowattclassroom.com/Archive/SCRArticle.pdf

 

[Ross Herbert]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

Since a rectifier is usually followed by a fairly large filter
capacitor of some 1000's of uF, it would be usual to fit a delay or
anti-surge type fuse (T suffix). You also say the original is a
ceramic (opaque white cylinder) fuse. This always indicates a fuse
with high current breaking capacity and they are usually associated
with a delayed function.

 

[Aidan Grey]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

I don't know, but I would guess that the fuse may have to be rated to
operate across a power line. That is, its voltage rating is enough to
interrupt
the line power coming in.

If so, any replacement must be rated for a minimum of 230 VAC.

Aidan Grey

 

[Colin McCormick]

Ken / Dave

They may be HRC (high rupture current) fuses,
often white or filled with white "sand", and
with "H" stamped on the end cap. These are
similar to "M" (microwave) fuses. The point
is that if a rectifier goes short ciruit, it
really goes short circuit. The current can
explode a normal fast blow fuse, which is,
erm, unpleasant.

That's my interpretation. Now someone might
like to put me right....

Colin

 

[[email protected]]

I'm trying to work on a piece of lab instrument that needs to have some
fuses replaced.

They appear to be ceramic type fuses.. The manual states that these must be
"rectifier type fuses". Regular fuses not recommended.

Can someone tell me what a rectifier fuse is? I've never heard of these
until now and my search on the web hasn't yielded
much useful information.

Thanks,
Dave

http://www.europacomponents.com/products/fuse-ge-ur-eet.htm