Redundant fuse - The better use ?

[kagliostro]

I'm placing on an amp an IEC inlet, in the same unit there is a line filter, an ON/OFF switch and two fuse holders



I'll use one of the fuses for the line and I'm wondering which will be the better use for the other fuse

the other wire of the line ? - B+ protection ? - Heaters ?

Please suggestions

Thanks

Franco

[PRR]

I'd keep the wall-power module ONLY wall-power stuff.

I don't like the idea of bringing "safer" wiring on the PT secondary back next to the wall-power.

Your regulations encourage double-pole switches. Double fuses on the wall-power may be a similar thought.

[kagliostro]

I forgot to say it is a 3 W  amp and  B+ is near line voltage (260v)

However I'll follow your council, as you say the switch is  DPST

Thanks

Franco

[trobbins]

K, has that really got two fused connections!
Do you have a link to part spec?

[kagliostro]

Ciao Tim

https://docs-emea.rs-online.com/webdocs/140a/0900766b8140a4e0.pdf

https://uk.rs-online.com/web/p/iec-filters/8826888/

At a Ham Fest I got 2 (new) for 5 € I was surprised when I've seen the retail price is more than 20 € each 

I've been lucky

Franco

[trobbins]

Hmmm.  So G,H,J, K terminals in datasheet connect to the two fuse terminals?


Never come across that before 

[kagliostro]

Yes, tomorrow I'll post a pair of photo

(on 21-22 april there will be one other Electronic Fier with Radioamateur Flea Market, I think I'll see the guy from which I got the inlet and I'll get some others, if he has more)

Franco

[kagliostro]

Here the photo

you can see the small door and inside two sledges where you place the fuses









Franco