Author Topic: 5x20 fuse holder insertion  (Read 1356 times)

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Offline AxkTopic starter

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5x20 fuse holder insertion
« on: November 08, 2020, 03:19:17 pm »
For the leaded fuse holders on the screenshot how to you actually insert a 5mm fuse into 2 of these?
It doesn't fit because one of the holder's inner dimensions is 4.9mm and the fuse is 5.2mm.
Are these just wrong holders or is there a tool to insert these bending the holder for a tight fit?

« Last Edit: November 08, 2020, 03:21:17 pm by Axk »
 

Offline Benta

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Re: 5x20 fuse holder insertion
« Reply #1 on: November 08, 2020, 06:54:19 pm »
The fuse is 5.2 mm? Then why would it be called a 5 x 20 fuse?

You'll find that the fuse is 5 mm. The receptacle is 4.9 mm, but due to its shape spring loaded.
No mystery here.
 
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Offline AxkTopic starter

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Re: 5x20 fuse holder insertion
« Reply #2 on: November 08, 2020, 07:48:12 pm »
I see, I thought 5mm was a standard where the actual diameter is 5.2mm, didn't know there were 2 different standards.
 

Offline PushUp

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Re: 5x20 fuse holder insertion
« Reply #3 on: November 08, 2020, 10:20:39 pm »
Although it fits, it is still a bit fiddly to operate - at least for me  ;) :



I find it helpful, to put a rubber band at the end of the grip and work around in circle - one fuse holder after the other:




Most likely there is a special tool for it, but as I don't need it so often, I am happy with this way. However, I am open for any cheap solution to improve!  :)
 
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Offline sleemanj

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Re: 5x20 fuse holder insertion
« Reply #4 on: November 09, 2020, 07:01:48 am »
However, I am open for any cheap solution to improve!  :)

Buy a bag of axial fuses? :-)

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EEVBlog Members - get yourself 10% discount off all my electronic components for sale just use the Buy Direct links and use Coupon Code "eevblog" during checkout.  Shipping from New Zealand, international orders welcome :-)
 

Offline Gyro

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Re: 5x20 fuse holder insertion
« Reply #5 on: November 09, 2020, 06:32:52 pm »
However, I am open for any cheap solution to improve!  :)

Buy a bag of axial fuses? :-)

Agreed.   You have to desolder the end caps anyway in order to prise out the old fuse and replace it, there's too much stress on the PCB traces and joints otherwise. The second fit will never be as tight (possibly too loose) either.
Best Regards, Chris
 

Offline Coordonnée_chromatique

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Re: 5x20 fuse holder insertion
« Reply #6 on: November 09, 2020, 07:36:04 pm »
Put your fuse in the liquid nitrogen and heat the fuse holder with a blowtorch
 

Offline Alti

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Re: 5x20 fuse holder insertion
« Reply #7 on: November 09, 2020, 08:09:57 pm »
For the leaded fuse holders on the screenshot how to you actually insert a 5mm fuse into 2 of these?
Were these IEC 60127 fuses?
If these were safety rated, modifying fuses in any way is not allowed.
You must not solder fuses, open them, rewire, paint, stick a radiator on, etc.
All that might change their characteristics and impair safety.
I'd say squeezing those in a vice is a modification that fuse manufacturer did not test for.

It is true some fuses come as leaded versions but these are not raw fuses with caps pressed in but separate products with separate testing and approvals as whole unit after it has been assembled. I'd say that chopping off leads from leaded version also qualifies as modification, even if you can technically squeeze that into a fuse holder.
 
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