Where do i get one of these please ?

[sythai]

Hi Guys

Got an Emmeti UFH manifold box we wired up a while ago, fuse inside has gone 'pop' for some reason.

Not brought this type of fuse before - clear casing, got 4a marking on PCB above.

What do I search for is it a special type ?

Thanks Sy

 

[davesparks]

Looks like a standard 20mm glass fuse. Some wholesalers will stick them or else any online electronics supplier like RS

 

[sythai]

Looks like a standard 20mm glass fuse. Some wholesalers will stick them or else any online electronics supplier like RS

thanks Dave... just curious what difference is and why they would be in glass

 

[DefyG]

Fuses dont 'blow' like that without reason. Looks like the effect of a short circuit!

 

[sythai]

Fuses dont 'blow' like that without reason. Looks like the effect of a short circuit!

I'll back to find out once got a few fuses on board... something dodgy going on there
Hopefully not our wiring

 

[davesparks]

thanks Dave... just curious what difference is and why they would be in glass

They are glass so you can see whether or not they are intact. However glass fuses are only suitable for low levels of fault current as the glass cannot contain much energy.

 

[sythai]

They are glass so you can see whether or not they are intact. However glass fuses are only suitable for low levels of fault current as the glass cannot contain much energy.

cheers Dave

 

[brianmoooore]

The rating of the fuse will be marked on one of the end caps, followed by a 'F' or 'T', standing for fast or slow( time) blow respectively. Be sure to fit the right type.
That fuse looks like it's been blown by a short circuit or large overload, so do some fault finding before just trying another fuse. Things like relay contacts can be irreparably damaged if subjected to successive shocks like this.

 

[sythai]

The rating of the fuse will be marked on one of the end caps, followed by a 'F' or 'T', standing for fast or slow( time) blow respectively. Be sure to fit the right type.
That fuse looks like it's been blown by a short circuit or large overload, so do some fault finding before just trying another fuse. Things like relay contacts can be irreparably damaged if subjected to successive shocks like this.

just checked with Emetti F1 4a time delay - thanks for heads up

 

[Lucien Nunes]

5x20mm fuses come in both glass (LBC = low breaking capacity) and sand-filled ceramic (HBC = high breaking capacity) body versions. The glass type is standard within equipment especially for ELV circuits where the short-circuit current might only be a few amps. It's OK to replace an LBC with an HBC of the same rating and speed, but obviously not the other way round.

With PCB markings take care not to confuse the component identifier (e.g. F2 = fuse No. 2) with the rating (e.g. F2A = 2A fast-blow.) The marking 'F1 T2.5AH' would indicate that fuse No. 1 is an HRC 2.5A slow-blow type.

FWIW the speed letters are German. F = flink = nimble, T = träge = sluggish. There are also M (medium) and FF (ultra rapid) types but they are much less common.

 

[DPG]

5x20mm fuses come in both glass (LBC = low breaking capacity) and sand-filled ceramic (HBC = high breaking capacity) body versions. The glass type is standard within equipment especially for ELV circuits where the short-circuit current might only be a few amps. It's OK to replace an LBC with an HBC of the same rating and speed, but obviously not the other way round.

With PCB markings take care not to confuse the component identifier (e.g. F2 = fuse No. 2) with the rating (e.g. F2A = 2A fast-blow.) The marking 'F1 T2.5AH' would indicate that fuse No. 1 is an HRC 2.5A slow-blow type.

FWIW the speed letters are German. F = flink = nimble, T = träge = sluggish. There are also M (medium) and FF (ultra rapid) types but they are much less common.

Never knew that's where the speed letters came from. I always thought it was T=Time lag and F = Fast.

 

[scootknew]

if emergency can use 5a fusewire to link between

 

[davesparks]

if emergency can use 5a fusewire to link between

That is a very bad and potentially quite dangerous idea.

 

[sythai]

After all that ended up being a dodgy ‘Neostat’