Can anyone identity this fuse

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  #1  
Old 01-03-16, 03:46 PM
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Can anyone identity this fuse

I need to replace a fuse but i cant find it online. I was hoping someone understood the numbers on it and could tell me which fuse i needed.
It is on a 120VAC line. It is ceramic.
Lf 20 A /500VP
And
505 c7 RU us. (the RU is large font and the R is backwards).
Thanks.
 
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Old 01-03-16, 03:49 PM
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A picture would help, but it sounds like just a 20 amp fuse.
 
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Old 01-03-16, 03:58 PM
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It looks like a LittleFuse 20A ceramic fuse.
 
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Old 01-03-16, 04:02 PM
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If you gave us the dimensions and a photo, we could probably give you a replacement part no that would work.
 
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Old 01-03-16, 04:08 PM
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The UR is for Underwriters Recognized, a testing lab.
 
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Old 01-03-16, 08:05 PM
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I didnt include a photo because it is an inline fuse without an inline fuse holder. They soldered the wires to it, then it looks like they glued a sheet of rubber to it, then a heat shrink tube. By the time i hacked, wacked, slashed and tore through half of it so i could test it, it wasnt very pretty. I shattered it fighting to get the last bits off so i could read the numbers.
I dont see the button to attach a pic, but if i find it, i will attach what i have.
As for dimensions, i cant measure it now, but it looked like a standard 12V automotive size.
 
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Old 01-03-16, 08:09 PM
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Found the button, it is not on my mobile version.
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Old 01-03-16, 09:31 PM
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That's a Littlefuse 505 series fuse.

littelfuse/media/electronics/datasheets/littelfuse_fuse_505_datasheet.pdf.pdf


Mouser is a god place to purchase it from. No minimum order and fast service.
0505020.MXP Littelfuse | Mouser
 
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Old 01-03-16, 09:49 PM
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Great, thank you.
I thought it was going to some weird, oddball thing.
Also, do they make inline fuse holders for these? Or do i have to solder it the way they did?
 
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Old 01-04-16, 06:18 AM
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Hi, that appears to be a standard size fuse 1.25" long be 1/4" Dia , any inline fuse holder should work,as long as the voltage rating is greater than or equal to the circuit voltage.
 
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