[Boatanchors] OT: Fuse replacement?

[WA5CAB at cs.com]

Eugene (and others)

The 250 Volt rating has nothing to do with the current rating, but it is 
important.  The voltage rating is the maximum voltage where if the fuse blows, 
the arc will extinguish (and relatively quickly).  If you were, for 
example, to use a 32 volt rated 4AG or SFE in a 120 volt AC operated appliance, if 
the fuse blew the arc probably would not extinguish until the fuse holder or 
surrounding circuit board area melted or burned up.  It is perfectly safe 
to use a 125 or 250 volt rated fuse in a 14 or 28 Volt circuit.  But not vice 
versa.

In a message dated 7/10/2010 3:51:41 PM Central Daylight Time, 
w2hx at w2hx.com writes: 
> Warning - this is OT!
> 
> I am repairing a circuit board from an oven (one of these high tech
> thingies). The company wants $400 to replace the board. But it looks like
> only 1 fuse blew. Yes, it might have blown for good reasons, but I thought
> Id first just try to replace it. It is soldered onto the board. These are
> the markings on it:
> 
> 250V   6/10A
> 
> Could this mean that for 250V it will blow at 6A but at 125V it will blow 
> at
> 10A? (ie blows at 1,250W?)
> 
> The only replacement I could find in mouser says this:
> 
> 125V   6A
> 
> Does this sound like a replacement? Could it be under rated? I don't mind 
> it
> being a little underrated, I would just rather not put in something
> overrated.  
> Thoughts?
> 
> 73 Eugene W2HX
> 

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