# CIE PTL-1 Fuse

**URL:** <https://forum.digikey.com/t/cie-ptl-1-fuse/29970>\
**Category:** Circuit Protection\
**Tags:** fuses, circuit-protection, power, part-identification\
**Created:** [April 5, 2023, 10:47pm UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970 "2023-04-05T22:47:29Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![CaliforniaRacer](https://avatars.discourse-cdn.com/v4/letter/c/d2c977/32.png) [@CaliforniaRacer](https://forum.digikey.com/u/CaliforniaRacer)\
**Post date:** [April 5, 2023, 10:47pm UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/1 "2023-04-05T22:47:29Z")

</div>

Hi

Okay. The two PTL-2 fuses are taken care of.

Thanks to Verna and David.

The PTL-1 fuse seems to be a 1 1/8" long fuse.

Looks like for good reason.

A 1 1/4" seems to bottom out with spring loading.

Will post markings on existing fuse.

Bob

---

<div class="post-metadata">

**Author:** ![CaliforniaRacer](https://avatars.discourse-cdn.com/v4/letter/c/d2c977/32.png) [@CaliforniaRacer](https://forum.digikey.com/u/CaliforniaRacer)\
**Post date:** [April 5, 2023, 11:33pm UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/2 "2023-04-05T23:33:20Z")

</div>

Hi

Here are the markings on the ‘short’ fuse.

JEF250V 1A

Do 1 1/8" fuses exist?

Have a good evening

Bob

---

<div class="post-metadata">

**Author:** ![Robert\_1552](https://avatars.discourse-cdn.com/v4/letter/r/e47c2d/32.png) [@Robert\_1552](https://forum.digikey.com/u/Robert_1552)\
**Post date:** [April 5, 2023, 11:56pm UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/3 "2023-04-05T23:56:32Z")

</div>

do you mean [Click here](https://www.digikey.com/en/products/filter/fuses/139?s=N4IgjCBcpgbFoDGUBmBDANgZwKYBoQB7KAbRACYAGMAdlkpAF0CAHAFyhAGU2AnASwB2AcxABfAlQAcUhCGSR02fEVLgABAEEmrDpBABVQfzYB5FAFkcaLAFdeOcZLAAWAMxyFS3AWKQy5ACslOoAajog7JxGJuZWNvaOYhIUauootrjqYAD0LupMYkA)

---

<div class="post-metadata">

**Author:** ![CaliforniaRacer](https://avatars.discourse-cdn.com/v4/letter/c/d2c977/32.png) [@CaliforniaRacer](https://forum.digikey.com/u/CaliforniaRacer)\
**Post date:** [April 6, 2023, 12:03am UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/4 "2023-04-06T00:03:33Z")

</div>

Hi Robert

Thanks

Those look like 1 1/4" fuses.

This fuse that came with the PLT-1 really is shorter than that.

It really does measure 1 1/8"

It is a better fit in the fuse holder too.

Swapped in 1 1/4" fuse and it did not feel good.

Did not know if cap was screwed all the way down or fuse was bottoming out.

Have a good evening

Bob

---

<div class="post-metadata">

**Author:** ![Robert\_1552](https://avatars.discourse-cdn.com/v4/letter/r/e47c2d/32.png) [@Robert\_1552](https://forum.digikey.com/u/Robert_1552)\
**Post date:** [April 6, 2023, 12:19am UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/5 "2023-04-06T00:19:01Z")

</div>

perhaps this may help [Click Here](https://www.globalspec.com/learnmore/electrical_electronic_components/electrical_distribution_protection_equipment/fuse_holders#:~:text=Standard%20Fuse%20Sizes%3A,(3AG%2C%206mm%20x%2032mm))

---

<div class="post-metadata">

**Author:** ![PaulHutch](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/paulhutch/32/3357_2.png) [@PaulHutch](https://forum.digikey.com/u/PaulHutch)\
**Post date:** [April 6, 2023, 6:35pm UTC](https://forum.digikey.com/t/cie-ptl-1-fuse/29970/6 "2023-04-06T18:35:59Z")

</div>

High quality fuse holders often have high pressure on the fuse contacts. This significantly increases long term reliability and lowers electrical resistance of the fuse circuit.

Lower pressure fuse holders will often require removal and reinsertion of the fuse every few years to keep the electrical resistance low.