Decoding a glass fuse?

[EXP]

the fuse in my RV fridge is blown I am trying to find a new fuse to replace it but having trouble decoding it to figure what type to get
it is a tubular glass fuse with markings 5A 250V 312 with a green strip and a white strip
5A 5 amp in know that
250v 250 volts
312 ? does this cross reference to anything else?
the strips?
thanks for helping

[syncrovan]

Re: Decoding a glass fuse?

Maybe that will help:

Some glass fuses have 2 coloured bands on them.
If one band closer to an end cap AND WIDER than the other band (top image, below), read the value from the middle column.
BOTH bands the same width? (lower image, below) Then value you need is in the right hand column.
When decoding these fuses the band nearest the end cap (the wide one if they're different widths) is the type of fuse, the other colour being the value. Not all values may be available in all types.

I will deal with the type band first:
fuse 2 stripeYELLOW is Very Fast Acting,
fuse 2 stripeRED is Fast Acting,
BLUE is Normal,
GREEN is Slow Blow.
BLACK is Very Slow Blow.

The other colours are the value, thus:
Narrow Wide
RED 1 A 10 A
PURPLE 1.25 A 12.5 A
ORANGE 1.6 A 16 A
BLUE 2 A 20 A
YELLOW 2.5 A 25 A
BLACK 3.15 A ---
BROWN 4 A ---
WHITE 5 A ---
GREEN 6.3 A ---

[Stonewall]

Re: Decoding a glass fuse?

312 series fuse made by littelfuse: http://www.littelfuse.com/products/f...fuses/312.aspx
More than likely what it is. Though the bands point to a slow blow which I would think that a fridge would use due to inrush current.

[EXP]

Re: Decoding a glass fuse?

Ended up at Active Electronics they said it was a fast burn fuse, so I got a package for $5
I found info relating to that little fuse, and other makers use different markings for the same indicators
so far the fridge is working again.

[CGDoig]

Re: Decoding a glass fuse?

It would likely be slow blow like Brent said. The compressor will have a slight inrush current when it turns on and the fuse has to handle that for the short duration without popping, but still protect for a dead short condition.