All I need is another 6/10ths of an amp

[chris kennedy]

and this lamp and this chair and this...

Anyone know the story behind this fuse? Also note the concave end.

 

[Rewire]

Those are gas station fuses $2.99 9/10

 

[480sparky]

Where's Al?

 

[LarryFine]

and this lamp and this chair and this...

" ... and that's all I need!" ~ Steve Martin in The Jerk

 

[chris kennedy]

Those are gas station fuses $2.99 9/10

Where's Al?

" ... and that's all I need!" ~ Steve Martin in The Jerk

There you have it, the history of the 5 and 6/10ths amp fuse. This place is the best!

 

[hillbilly1]

Rejection type fuses, for disconnects or fuseholders with higher AIC ratings, keeps you from putting 10K AIC fuses in a system requiring a higher short circuit rating. The 5 amp fuses were probably used for protection of a small motor or piece of equipment.

 

[480sparky]

Isn't the reduced diameter of the 'bottom' end of the fuse part of a rejection feature? I don't think the concave end of the one has any purpose or function.... just a result of the manufacturing process.

 

[hillbilly1]

I've seen a 5 6/10 rating in a midget fuse, but not in the full size, not saying they don't make it, just havn't seen one.

 

[hillbilly1]

Isn't the reduced diameter of the 'bottom' end of the fuse part of a rejection feature? I don't think the concave end of the one has any purpose or function.... just a result of the manufacturing process.

Sorry, I thought that was what he was refering to. My bad!

 

[hillbilly1]

Isn't the reduced diameter of the 'bottom' end of the fuse part of a rejection feature? I don't think the concave end of the one has any purpose or function.... just a result of the manufacturing process.

Sorry, I just scrolled over and seen the one Chris was talking about, I figured he knew about the rejection feature.:smile:

 

[chris kennedy]

I've seen a 5 6/10 rating in a midget fuse, but not in the full size, not saying they don't make it, just havn't seen one.

I have never seen it. This fuse is soldered at both ends instead of the press and crimp caps that are standard. Looks like it was made with human hands.

 

[Mr.Sparkle]

" ... and that's all I need!" ~ Steve Martin in The Jerk

Damn! Beat me too it. :grin:

"Somebody really hates cans!"

 

[don_resqcapt19]

That fuse is still listed on Bussmann's site. I assume that the odd sizes are for when you use fuses as motor overload protection.

 

[augie47]

That fuse is still listed on Bussmann's site. I assume that the odd sizes are for when you use fuses as motor overload protection.

They do list 5 6/10 as the correct fuse in their SPD Guide for some motor O.L. applications such as 3/4 hp 3 phase @ 208.

 

[chris kennedy]

That fuse is still listed on Bussmann's site. I assume that the odd sizes are for when you use fuses as motor overload protection.

Interesting, thank you. Even more interesting since these fuses feed a motor starter with 5.5A heaters.

 

[iaov]

I've seen these sized fuses before but the concave end is a new one for me.

 

[augie47]

Bussman list the 5.6 as "good backup overload protection"

 

[jim dungar]

I've seen these sized fuses before but the concave end is a new one for me.

Actually it is old.
This is the way they used to be made.

 

[chris kennedy]

Actually it is old.
This is the way they used to be made.

But it is in mint condition, very low amps on it, a little old electron only drove it to motor on Sundays.

 

[MichaelGP3]

This one is so easy........

This one is so easy........

The concave end is there so that blind folks don't overfuse their 5A circuits by putting in a 5 6/10th amp fuse if by some chance the braille dots have fallen off.