Eaton Littelfuse Bussmann

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FionaZuppa

FionaZuppa

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AZ
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Part Time Electrician (semi retired, old) - EE retired.
I think this site should have it's own OCPD/Fuse sub-forum.

That said, wondering what you prefer. Supply and prices are moving targets, but my goto for HVAC fused disco that uses this fuse type was Littelfuse FLNR.

UL RK5's

Eaton has their ECNR, Bussmann has theirs. Specs seem to be abut the same.

Strictly on performance, which one do you prefer? (assuming motor ckt).
Perhaps even another brand?
 
I almost always use class CC or class j.

I don't think any of us are in a position to determine what the performance of a particular fuse is.

Personally I think any of the UL classed fuses are adequate for whatever they are suitable for. I just don't think there's enough difference to matter.

There is obviously a cost difference in some cases, and different AIC ratings, but for the most part for mundane fuse applications I don't think it makes any real difference.

I don't think there is any real difference in performance between a class CC fuse in one brand or another, or for that matter class h, class RK1, or class j, or class l, etc.

We generally use whatever is most cost effective. With special purchasing arrangements that might be just about any brand at any one point in time. Just depends on who wants the business the most when the agreements get negotiated.
 
It's hard to see exact diffs for AC applications. Some are just 600v rated while others have 250 and 600v versions.
CC RK5 J seem to have about same specs.

It boils down to "does it meet requirement" and "cost". I was just curious about perhaps MTBF, one brand lasts longer than another, profile consistent across fuses made, etc.

 
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petersonra said:
We generally use whatever is most cost effective. With special purchasing arrangements that might be just about any brand at any one point in time. Just depends on who wants the business the most when the agreements get negotiated.
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This attitude plays havoc with selective coordination and arc flash mitigation.

I remember back in the 90's when every manufacturer was pushing their 'high speed' RK1 fuses as universal replacements. There were many unexpected outages caused by motor inrush.
 
I preferred Bussman as they had great literature that I used in my classes. But all the fuse mfgs that have listed fuses would be acceptable. My area had 4 different electrical houses, each carried a different fuse mfg. Also Bussman had a complete line of reducers, etc
I had an AB MCC with VFD that used 3 different mfgs fuses, so getting spares was challenging.
 
tom baker said:
I preferred Bussman as they had great literature that I used in my classes. But all the fuse mfgs that have listed fuses would be acceptable. My area had 4 different electrical houses, each carried a different fuse mfg. Also Bussman had a complete line of reducers, etc
I had an AB MCC with VFD that used 3 different mfgs fuses, so getting spares was challenging.
Click to expand...
As long as they are the same class of fuse it doesn't matter what brand it is.
 
jim dungar said:
This attitude plays havoc with selective coordination and arc flash mitigation.

I remember back in the 90's when every manufacturer was pushing their 'high speed' RK1 fuses as universal replacements. There were many unexpected outages caused by motor inrush.
Click to expand...
Not an issue for me. It's not unusual for me to have a panel with several hundred class CC and class j fuses in it. All 60 amps and under.
 
It may not matter what brand as long as they are same class of fuse but I did find that the VD across Gould Shawmut fuses was considerably higher than that of Buss at the time. Could be the reason for the fiberglass Cartridge? I didn't use them unless that was all I could find.

Mixing brands was Avoided.
 
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