Spare Fuse assistance

[HowieLong]

I am looking to purchase some spare fuses. The 40 and 60 amp slotted fuses in my Bronco are labeled as HT (High Temp, I believe). When I look at Fordparts.com it says the HT fuses don't match my vehicle but the non HT fuses do. Any idea why this is and is it ok to use the non HT fuses? Any assistance will be appreciated.

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[SeptuagenerianSasquatch]

Perhaps somebody bought a kit or box with the necessary fuses? That would be handy.

 

[Karl_in_Chicago]

I am looking to purchase some spare fuses. The 40 and 60 amp slotted fuses in my Bronco are labeled as HT (High Temp, I believe). When I look at Fordparts.com it says the HT fuses don't match my vehicle but the non HT fuses do. Any idea why this is and is it ok to use the non HT fuses? Any assistance will be appreciated.

Could you show a picture of the fuse you wish to replace? I haven't pulled any from my fusebox but assumed they would be blade fuses, which the item from Ford Parts doesn't appear to be (or it's a misleading photo on FP's part). Like I said, have never even *looked* in my fuse box so I could be way off but these days I expect to mostly see blade fuses in cars/trucks and I'd expect a 60 Amp fuse to look more like the one here at Rock Auto. So seeing a picture of the fuse you wish to replace removed from the box on its own would be helpful.

 

[Brian_B]

This thread may help some - it lists a lot of good replacement options and kits.

https://www.bronco6g.com/forum/threads/2021-bronco-fuse-types.44742/

The HT I am familiar with stands for "High tension" and is used in higher voltage situations, in case the fuse blows but the voltage is high enough to continue to arc through the blown fuse. You see them a lot in tube amps and high power electrical - usually stuff well over 300V. I can't think of anything in a Bronco that needs that, not even close.

This may be a different HT though, but as far as I know for Auto fuses - the amp rating is really the most important thing. If it were my Bronco I wouldn't feel bad about using a non-HT fuse in there, but maybe there's something I don't know about here, so watching.

 

[HowieLong]

Could you show a picture of the fuse you wish to replace? I haven't pulled any from my fusebox but assumed they would be blade fuses, which the item from Ford Parts doesn't appear to be (or it's a misleading photo on FP's part). Like I said, have never even *looked* in my fuse box so I could be way off but these days I expect to mostly see blade fuses in cars/trucks and I'd expect a 60 Amp fuse to look more like the one here at Rock Auto. So seeing a picture of the fuse you wish to replace removed from the box on its own would be helpful.

The first photo is my engine compartment fuse box. The 20 amp fuses are micro 2 blade fuses. The 40 and 60 HT fuses are MCase slotted style fuses like in the second photo from FordParts. I am just curious why my fuses show HT and FordParts says those aren't compatible with my Bronco yet the non HT ones are.

 

[HowieLong]

This thread may help some - it lists a lot of good replacement options and kits.

https://www.bronco6g.com/forum/threads/2021-bronco-fuse-types.44742/

The HT I am familiar with stands for "High tension" and is used in higher voltage situations, in case the fuse blows but the voltage is high enough to continue to arc through the blown fuse. You see them a lot in tube amps and high power electrical - usually stuff well over 300V. I can't think of anything in a Bronco that needs that, not even close.

This may be a different HT though, but as far as I know for Auto fuses - the amp rating is really the most important thing. If it were my Bronco I wouldn't feel bad about using a non-HT fuse in there, but maybe there's something I don't know about here, so watching.

Littelfuse makes slotted MCase + fuses in both HT and non HT. This is what they say: MCASE+ High Temperature (HT) have a lower voltage drop and are designed to operate with a lower temperature rise in harsher environmental applications.
I am not very knowledgeable about electrical items so this doesn't mean much to me but I am hoping someone may be able to help.
I found this video while searching for answers on fuses and found it interesting in comparing quality name brand fuses and others:

 

[Brian_B]

I can say quality fuses are worth the investment. I can't count the number of times I'll go replace a fuse over and over because it came from a cheap package of crap I found on the discount rack at Autozone.

That said, I still wouldn't bother over the HT designation - the Littelfuse description you found is plausible, I have no reason to not believe it. But I still can't think of any reason why the Bronco would need those in particular. Amps are all that really matter there. HT fuses sound like a "premium" upsell, and wouldn't be worse, but so long as you are matching the amp rating, I don't think they would necessarily perform any better either.

 

[Karl_in_Chicago]

Once upon a time I'd just walk into the local auto parts store and show the counter guy the part I needed to replace and they'd either know right away or look it up and then either grab one or point me to which aisle they were in. Now some parts are, of course, very specific to a given vehicle but a fuse? These days who knows, I guess, but I'd be shocked if these aren't like a $1/ea at any parts store with plenty in stock.

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