Why are DMM fuse so expensive - Page 1
Forum section: electronics / projects

author: kuon
author_rank: Regular Contributor
timestamp: November 10, 2022, 04:09:24 pm
content: I blew my DMM fuse, and when looking for a replacement, I found those:https://www.digikey.ch/en/products/detail/littelfuse-inc/0FLU011-U/5233869https://www.digikey.ch/en/products/detail/eaton-bussmann-electrical-division/DMM-B-11A/444040I don't want to use cheap fuse and kill myself. But is there any safe cheaper one? And most importantly, I want to understand why they are so expensive.

author: Wolfram
author_rank: Frequent Contributor
timestamp: November 10, 2022, 04:47:43 pm
content: 20 kA interrupt rating at 1000 V DC takes a lot more fancy technology than regular glass fuses. That combined with a moderately small industrial market and distributor markup makes them pretty expensive. Any fuse with interrupt current and voltage ratings matching or better than the original should be safe to use. Mass-market adoption of solar technology and EVs has grown this market, so there could be some cheaper options around.Edit: The original has an interrupt rating of 20 kA at 1000 V AC/DC. The cheapest fuse on Digi-Key that meets these specifications is the 0ADHC9110-BE. It is listed in the datasheet for use with DMI (digital measurement instruments) and the press release for the series mentions multimeters, so along with the 30 kA interrupt rating I would personally be comfortable with using this one as a replacement. Note that this is qualified guessing on my part based on some experience with fuses, take safety advice from strangers on the internet on your own risk.

author: bdunham7
author_rank: Super Contributor
timestamp: November 10, 2022, 04:53:43 pm
content: Quote from: kuon on November 10, 2022, 04:09:24 pm36 francs?Because you're in Switzerland? Here they're $21 in quantity 1 direct from Fluke and less expensive from other reliable sources.

author: kuon
author_rank: Regular Contributor
timestamp: November 10, 2022, 05:02:03 pm
content: Quote from: bdunham7 on November 10, 2022, 04:53:43 pmWell, I can find a bit lower price. But I am really curious what is inside to justify a price > 10$. Is it mostly "low volume niche market" factor?

author: alm
author_rank: Super Contributor
timestamp: November 10, 2022, 05:05:50 pm
content: They are expensive because they are designed to interrupt 20 kA in case someone connects the meter across a high-energy circuit so that someone can live to buy another meter instead of being severely burnt or even killed by an arc flash, hence the name high rupture current (HRC) fuses. They are filled with a sand-like substance that will quench any arc that might occur when the fuse breaks, and are encapsulated in a fiberglass-like material that should contain any blast that could occur within the rated parameters. I'm guessing the pricing is a combination of the more complicated construction, low volume, and the testing and certification the fuses will have to go through.At one time Dave was selling fuses cheaper, though shipping from Australia may not make sense. And I think Fluke themselves also sells them cheaper than the original manufacturers. I wouldn't buy them from an untrusted source like eBay or Aliexpress: counterfeit HRC fuses are a thing.

author: wraper
author_rank: Unknown
timestamp: November 10, 2022, 05:17:10 pm
content: Quote from: Wolfram on November 10, 2022, 04:47:43 pmNo, it's bullshit pricing policies. For example if you look at Bussmann or Littlefuse fuses (Mouser, Digikey, Farnell), they are 2-3 times more expensive than the same fuse under Fluke part number when ordered from fluke itself as pack of 5. And you can be sure Fluke makes a decent profit on that too. So I suggest buying SIBA (reasonable price from distributors, often comes in Keysight meters) or Bussmann/Littlefuse fuses under Brymen or Fluke spare part numbers. Don't buy them from China though, almost guaranteed to be counterfeits.BTW if you sook at fuses from the same manufacturers, with the same specs besides odd current rating of 440mA or 11A, they suddenly become much cheaper than multimeter specials.SIBAhttps://www.tme.eu/en/details/5021006.0.44/fuses-10-3x38mm-fast/siba/5021006-0-44https://www.tme.eu/en/details/5019906.11Brymen:https://brymen.eu/shop/fuse-11a1000v-10x38-mm/https://brymen.eu/shop/fuse-0-44a-1000v-10x38-mm/https://www.tme.eu/en/details/bm-s_fuse-0.44a/accessories-others/brymen/

author: Wolfram
author_rank: Frequent Contributor
timestamp: November 10, 2022, 05:41:31 pm
content: Quote from: wraper on November 10, 2022, 05:17:10 pmThat's the distributor markup part. 2-3x is pretty typical for Mouser, Farnell and Digi-key, although I've also seen parts with a markup in excess of 5x compared to ordering even moderate quantities from more production-oriented distributors. And this is considering the volume pricing, not just single quantity, which is often a lot more expensive again.

author: kuon
author_rank: Regular Contributor
timestamp: November 10, 2022, 05:45:44 pm
content: Quote from: wraper on November 10, 2022, 05:17:10 pmActually, I looked in my other DMM for what brand they were using (keysight meter) and they are SIBA fuse. I'll get those, thanks.

author: Zero999
author_rank: Super Contributor
timestamp: November 10, 2022, 05:50:37 pm
content: What do you use the DVM for? If it's not for mains, I'd replace the fuse with the same type, buy a cheaper meter and save the proper one for the mains.

author: kuon
author_rank: Regular Contributor
timestamp: November 10, 2022, 06:03:56 pm
content: Quote from: Zero999 on November 10, 2022, 05:50:37 pmI work on machinery (CNC, large 3d printer...) and it's mostly mains or high voltage DC (large motors I work with run at 400VDC). I use the fluke for that, that's why I bought that brand. Before I was just grabbing replacement fuses from the company inventory, but now I work alone as a contractor and I have to buy them myself, and it's my first burnt fuse since I started. As Dave said in his video, when you want something that works and feel safe, you just buy a fluke, there is no need to read reviews or teardown, you can just go for it.

author: boB
author_rank: Frequent Contributor
timestamp: November 10, 2022, 06:06:36 pm
content: Geee.... Even if you order from the USA plus shipping, it would be much cheaper than that price.I use these same fuses in my Fluke meters. This one is 10A, 1000V 20kA interrupt rating but there are different ampere ratings available.https://www.solar-electric.com/midnite-solar-mnfuse10.html?gclid=Cj0KCQiA37KbBhDgARIsAIzce16z2V4rLauEjd98NlhNqlePszc3XjI303fsAD-ZNGBThKTDBCDMB00aAjgWEALw_wcBI think these are the same thing you are finding on the other site.boB

author: kuon
author_rank: Regular Contributor
timestamp: November 10, 2022, 06:17:55 pm
content: The key was to look at suppliers in the solar business and not only electronic. I found some at a decent price for 4$ a piece. Thanks for your help.

author: wraper
author_rank: Unknown
timestamp: November 10, 2022, 07:15:22 pm
content: Quote from: Wolfram on November 10, 2022, 05:41:31 pmThat's a 3-8 times markup from Brymen price which includes Brymen+distributor markup. So I don't believe they cost more than a few $. And they are about as expensive at TME too. Also I don't believe that a fusible element in a sand filled tube is that expensive to produce in volume. The fact that very similar solar fuses are so much cheaper also suggest about shady business practices.

author: mag_therm
author_rank: Frequent Contributor
timestamp: November 10, 2022, 07:42:02 pm
content: Fuse price: On a commisioning in unnamed country once, my buddy put his multimeter probes onto load side of a 480V 1500A ACB.With almighty bang, the meter was blown to smithereens and he was left holding the smoking leads. Luckily he always wore safety glasses.

author: alm
author_rank: Super Contributor
timestamp: November 10, 2022, 08:07:43 pm
content: Quote from: wraper on November 10, 2022, 07:15:22 pmShady business practices or larger volume? I can't imagine Digikey sells a large volume of those DMM fuses.

author: tooki
author_rank: Super Contributor
timestamp: November 10, 2022, 08:22:03 pm
content: Quote from: kuon on November 10, 2022, 06:17:55 pmWhich supplier?FYI, one thing to be aware of: the 440mA fuses are deliberately shorter (35mm) than the 11A ones (38mm), and the multimeter housings of any halfway recent model (like the last 15 years, maybe longer) is designed to prevent the housing from closing if you put a 38mm fuse into the 440mA holder. As best I can tell, this is a deliberate safety design to stop you from using non-multimeter fuses in a multimeter. (Further discouraged by the oddball current values.) So if you got e.g. 500mA solar fuses, they are likely the 38mm length that won’t fit.

author: blackfin76
author_rank: Regular Contributor
timestamp: November 10, 2022, 08:23:20 pm
content: The sand they use to fill these high current braking capacity fuses has magical properies.You pay for the magic trick and because you want to keep your equipment compliant to the safety standards.

author: wraper
author_rank: Unknown
timestamp: November 10, 2022, 08:43:26 pm
content: Quote from: alm on November 10, 2022, 08:07:43 pmWhy pack of 5 of Fluke/Bussmann fuses sold at the same distributor costs much less than a single fuse sold under Bussmann Brand? At qty of 200 they still cost per piece as a pack of 5 with fluke as a middleman. Littlefuce price is a bit more reasonable but at qty of 200 you get 2 pieces for a cost of Fluke pack of 5. Larger volume argument does not add up. Frankly I cannot remember other so ridiculous component price discrepancies as with these fuses.https://www.mouser.com/ProductDetail/Fluke/FUSE-11A-1000V-B5?qs=fEPEG4LJ8UGLYf5WgAuthA%3D%3Dhttps://www.mouser.com/ProductDetail/Bussmann-Eaton/DMM-B-11A?qs=ar9f0rk5DXA%252BaeFWGEpUhw%3D%3D

author: wraper
author_rank: Unknown
timestamp: November 10, 2022, 08:59:32 pm
content: Quote from: blackfin76 on November 10, 2022, 08:23:20 pmAgain the question is why this magic sand becomes so much cheaper when there is another (very expensive) middlemen in the supply chain with its own markup. Also magic sand from SIBA which provides 30kA breaking current rating instead of 10 or 20kA is much cheaper.

author: David Aurora
author_rank: Frequent Contributor
timestamp: November 10, 2022, 10:02:57 pm
content: A conversation that comes up a lot in my workshop is the definition of expensive. Most of the time the thing that's off isn't the actual price, it's the consumers perception of what something should cost.People constantly have this idea that because a no name 500mA M205 glass fuse used in everyday consumer products is only worth cents, that's what fuses are worth. In reality, even in this category there's a world of difference between the 10 cent fuses and $1 brand name fuses when you need trust and repeatability.Jump to the rated specs of a multimeter fuse, as well as what's at stake if they don't perform, and I think it's pretty hard to call them expensive. Obviously some brands/retailers will gouge for the same product so it's worth shopping around, but in general terms I really don't consider DMM fuses expensive, in my experience they're priced at what they're worth.

author: wraper
author_rank: Unknown
timestamp: November 11, 2022, 06:54:24 am
content: Quote from: David Aurora on November 10, 2022, 10:02:57 pmIMHO it's not consumers' perception. Not even small scale manufacturers' perception. More like they make a killing by selling those particular fuses to some government funded organizations or military who don't care about wasting taxpayer money. Again when you compare Bussmann price at Mouser and the same Bussmann fuse from Multimeter manufacturer like Brymen or Fluke, there is 10 times difference at qty of 1/5. Don't tell me that Mouser has $70 handling cost ($45 @ qty of 200) for a particular type of fuse but some cents for others.QuoteAgain, there is no comparison with noname here. It's Bussmann under Fluke/Brymen spare part number vs Bussmann, the same fuse from the same manufacturer. Common sense suggests they should be cheaper without multimeter manufacturer markup. But not only it's opposite, the price difference is huge.

author: Black Phoenix
author_rank: Super Contributor
timestamp: November 11, 2022, 07:24:03 am
content: Quote from: wraper on November 11, 2022, 06:54:24 amProbably the price is the same anyway. It is just cheaper because the cost of the consumable is already included in all the equipments who may need such consumable.For everyone one who owns a DMM I'm totally sure that not everyone would need a fuse replacement in his full life of use of the DMM.Same as Fluke offers Lifetime warranty on some products. Do you think if such products had a high rate of failure Fluke would do that?For everyone that buys a DMM and it doesn't need warranty it compensates for the ones who may have a problem and need service.Same as the free shipping, someone is paying for it even if you didn't, being on the product itself or subsidies from the government - this last one is how China basically do.I can sent a 55" TV from Shenzhen to Beijing, delivered in 2 days after leaving my door step for not more then 50RMB. And I can guarantee what it will be delivered two days after today. The distance is almost the same as sending from Lisbon to Helsinki. Or LA to NY.Tell me how such is financially viable in any part of the world, even taking in account the salaries, fuel, tolls and all the remaining expenses a delivery company have.Or probably I'm just totally wrong.

author: David Aurora
author_rank: Frequent Contributor
timestamp: November 11, 2022, 11:47:17 am
content: Quote from: wraper on November 11, 2022, 06:54:24 amYou do understand that DMM manufacturers are gonna be the biggest purchasers of said fuses and therefore likely get the best deals, right?Either way, if you can get the fuse for 1/5 the price directly from them, what exactly is the whinge here? Just buy direct from them and get on with life. Nobody is forcing you to buy fuses from Mouser. But I know this for sure- I need my tools to make a living, so if a fuse is $50 or whatever delivered the next day from an electronics supplier vs $10 delivered next week from Fluke, the $50 fuse is a goddamn bargain.

author: wraper
author_rank: Unknown
timestamp: November 11, 2022, 11:55:57 am
content: Quote from: David Aurora on November 11, 2022, 11:47:17 amYou do understand they later sell those parts to the same distro in much smaller quantities and slap their own markup? Why would they pass their best deal price to the distributor? Not to say I doubt Mouser pays for them 10x more than Fluke.QuoteI compared Bussmann and Fluke prices from Mouser. So shipping time is the same.

author: coppice
author_rank: Super Contributor
timestamp: November 11, 2022, 12:37:09 pm
content: Quote from: Wolfram on November 10, 2022, 04:47:43 pmHigh performance fuses take a lot more care and attention in design, but the manufactured part contains nothing exotic and expensive to manufacture. The volumes aren't small, so they aren't spreading a lot of R&D costs across a small production run. I find it strange that cheap reliable parts have not flooded this market.

author: David Aurora
author_rank: Frequent Contributor
timestamp: November 11, 2022, 12:38:33 pm
content: Quote from: wraper on November 11, 2022, 11:55:57 amAgain- if you can get them cheaper directly from Fluke, shipped in the same time frame, what exactly are you bitching about here? Yes, some places charge more for things. Welcome to the free market.

author: wraper
author_rank: Unknown
timestamp: November 11, 2022, 02:42:47 pm
content: Quote from: David Aurora on November 11, 2022, 12:38:33 pmWhere did I say you should get themdirectlyfrom fluke? It's contrary to my post you quoted. Again, pack of 5 from Mouserhttps://www.mouser.com/ProductDetail/Fluke/FUSE-11A-1000V-B5?qs=fEPEG4LJ8UGLYf5WgAuthA%3D%3D. What I said is that pricing is fishy.

author: M0HZH
author_rank: Regular Contributor
timestamp: November 11, 2022, 04:54:52 pm
content: That is Mouser being industrious, same PN with CPC is 6x cheaper:https://cpc.farnell.com/eaton-bussmann-series/dmm-b-11a/fuse-test-equipment-11a/dp/FF01869

author: wraper
author_rank: Unknown
timestamp: November 11, 2022, 05:21:57 pm
content: Quote from: M0HZH on November 11, 2022, 04:54:52 pmOn their website for businesses Farnell does the same pricing trick, although to much lesser extent.https://uk.farnell.com/eaton-bussmann-series/dmm-b-11a/fuse-test-equipment-11a-38x10mm/dp/1241956?ost=dmm-b-11aBut on their website for US they let you pay through the nose.https://www.newark.com/eaton-bussmann-series/dmm-b-11a/industrial-power-fuse-1-kv-1-kv/dp/23M5764?CMP=AFC-OPJust like any US based distributor (Mouser, Digikey, Arrow, Avnet).

author: David Aurora
author_rank: Frequent Contributor
timestamp: November 11, 2022, 10:29:50 pm
content: Quote from: wraper on November 11, 2022, 02:42:47 pmOh, my bad, I misread. So your gripe is that a retailer gives you the choice to buy the same product branded differently at a higher price, but you don't have to. Got it.

author: MrCAL
author_rank: Newbie
timestamp: September 24, 2023, 10:32:55 am
content: For the 10A version there seems to be a good alternative from DF Electric part# 491620, price €4,26 (as per 24. sept. 2023)TME:https://www.tme.eu/dk/en/details/491620/fuses-10-3x38mm-super-fast/df-electric/End-caps: Silver-plated copperMelting element: pure silverCategorized as "super-fast" by TME.Dosens't seems DF have a 400/440mA version though :-(

author: p.larner
author_rank: Frequent Contributor
timestamp: September 24, 2023, 03:11:48 pm
content: you think that markup is bad!,i used to run a bar in france in the early 90's,our markup on beer was 600% and we were one of the cheapest in town!.

author: EPAIII
author_rank: Super Contributor
timestamp: September 27, 2023, 08:00:15 am
content: No, you pay because you want to keep breathing. And not start pushing daisies up from below ground level.Quote from: blackfin76 on November 10, 2022, 08:23:20 pm

author: coppice
author_rank: Super Contributor
timestamp: September 28, 2023, 12:34:19 pm
content: Quote from: EPAIII on September 27, 2023, 08:00:15 amSo, you really think they have special high performance sand? That following these long proven designs, which are actually cheap to make, won't give the same results?

author: Gyro
author_rank: Super Contributor
timestamp: September 28, 2023, 06:26:48 pm
content: Well yes, it is special sand - virtually 100% silica with carefully controlled grain size and shape and tightly controlled impurities, so it comes under the heading of 'manufactured sand'. It needs to immediately fill the void left by the evaporating metal (no clumping or binding) and quench the arc by melting [Edit: or at least cooling it, depending on fault current].That said, I very much doubt that the value of the amount of sand in a fuse forms a significant proportion of its manufacturing cost!https://www.standard-sand.com/en/special-sand-for-fuses/

author: julian1
author_rank: Frequent Contributor
timestamp: September 28, 2023, 11:03:43 pm
content: Might also be the cost of liability insurance with their insurers.One can imagine the thinking from the insurers side - so you manufacture devices that keep products designed to measure life-threatening electrical potentials, and for millions of untrained members of the public as well as professionals?And we indemnify you for that, in countries with a poor history of tort reform, and where courts and juries are eager to find a solution for medical expenses if something goes wrong?It's possible that kind of protection costs money.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: September 29, 2023, 12:22:24 am
content: When you go into CAT IV rated DMM's you are far beyond the realm of desktop lab equipment.I once watched a servicemen working on a home fuse box. Rubber mat on the floor, full plastic suit, rubber boots, gloves, full face shield, isolated tools. Compared to that the cost of some DMM fuses is negligible.On the other hand, I've got a brand new BM869s on my desk, and if it's fuse ever blows, I will likely replace it with some pretty standard 50ct fuse, because I am well beyond the other side of my house fuses. Or maybe I will buy the expensive fuses, just to remind me that I did something stupid and should pay the proper price for being stupid.One reason the DMM fuses are a bit special, is the combination of the high breaking capacity, low burden voltage (and heat in a small plastic enclosure) and small size of the fuse.If you've still got a house with those standard ceramic house fuses. Those are in big metal and ceramic holders. and when loaded just below their melting point, they (and the holders) can become hot enough to melt the plastic of your DMM.

author: ejeffrey
author_rank: Super Contributor
timestamp: September 29, 2023, 01:52:59 am
content: Quote from: julian1 on September 28, 2023, 11:03:43 pmIt's not that. It's not the special design, it's not the testing and rating, it's not even the small volume.If it were any technical, legal, or cost related basis you wouldn't be able to get siba fuses or fluke branded fuses for a fraction of the cost.It's because they can charge that much and enough people buy it at that price to make it worth it. It presumably has to do with the mentality and protocols of the intended customers and what they do when they blow the fuse that came with it.

author: coppercone2
author_rank: Super Contributor
timestamp: September 29, 2023, 05:04:32 am
content: worth the money for all that electrical safety shit, its too easy to get confused. A little sick or a little tired or rushed...you can save the money to put in a fund or whatever, or you can live to use the fundand half the devices you work on, people in the future will see as totally insane from a safety stand point. Those safety handles and HV tools are one of the best returns on investments possibleand you damn well know in retrospect most of the work you do is barely worth doing lol

author: coppercone2
author_rank: Super Contributor
timestamp: September 29, 2023, 05:12:06 am
content: and quality powders for manufacturing are no joke and the reason why alot of things you own suck is because the right kind of particle is for whatever reason too expensive! plastics, batteries, bread, inductors, ceramics, cements etc

author: DimitriP
author_rank: Super Contributor
timestamp: September 29, 2023, 05:47:51 am
content: When it comes with a presentation box...you know it's expensive!https://www.thecableco.com/accessories/fuses/masterpiece-m1-fuse.html

author: Gyro
author_rank: Super Contributor
timestamp: September 29, 2023, 01:00:43 pm
content: Quote from: DimitriP on September 29, 2023, 05:47:51 amNow I wouldn't be surprised if those (and the box)aremade in some back street oriental factory, using whatever filling, if any, that comes to hand. I can't see any of the major fuse manufacturers wanting to be involved in custom marking for them. Giving them the benefit of the doubt, hopefully they are just a bog standard mains fuses with a hard to remove labels applied.

author: coppice
author_rank: Super Contributor
timestamp: September 29, 2023, 01:18:11 pm
content: Quote from: Gyro on September 28, 2023, 06:26:48 pmBy that measure most industrial sand is special. People do actually sell sand to Arabs, because desert sand is totally unsuitable for concrete. I doubt the selection of sand for a fuse is any more selective than selecting sand for most other industrial processes. We do have a very high volume, very low cost tightly specified sand selection process which runs on a vast scale - the glass industry.

author: mendip_discovery
author_rank: Super Contributor
timestamp: September 29, 2023, 01:19:52 pm
content: Quote from: DimitriP on September 29, 2023, 05:47:51 amGotta love it,QuoteI almost spat out my tea reading that delightful BS.

author: Gyro
author_rank: Super Contributor
timestamp: September 29, 2023, 01:31:34 pm
content: I'm pretty sure that "Bees Wax" won't improve the arc quenching capability of the fill, quite the opposite!

author: mendip_discovery
author_rank: Super Contributor
timestamp: September 29, 2023, 01:52:12 pm
content: If they were a sensible price I would be tempted to get some and send them to Marco Reps and BigClive and see what they make of the audio foolery.A joke on another group was to reply to random things with "It's OK but a bit smeary in the midrange". This could be the latest sound system, a motorcycle or even a multimeter.

author: coppice
author_rank: Super Contributor
timestamp: September 29, 2023, 02:26:21 pm
content: Those audiophile fuses are a bit pricy. I've seen 2m audiophile mains cables for as little as $2000, so $300 to carry the power in only one wire for only 2cm is a bit much.

author: TimFox
author_rank: Super Contributor
timestamp: September 29, 2023, 04:37:43 pm
content: Quote from: DimitriP on September 29, 2023, 05:47:51 amA quick search for high-end "presentation boxes" for the jewelry market shows similar boxes for roughly $2.00 wholesale.(Paperboard ones are much cheaper, but may not enhance the self-esteem of the fuses as they face a destructive life ahead of them...)

author: coppice
author_rank: Super Contributor
timestamp: September 29, 2023, 05:06:11 pm
content: Quote from: TimFox on September 29, 2023, 04:37:43 pmThere is no silly audiophile product so ludicrously overpriced they they don't feel the need to penny pinch on the very things that make people buy. Sometimes it just works out for them. I remember seeing a stupidly designed power amp being opened at a show, to let people see the construction inside. Engineers seeing the guy struggle with the weight of a cheap steel panel thought "$10k and they can't even use a nice aluminium panel". The main audience were deeply impressed, and gasped at the guy straining with the weight.

author: Gyro
author_rank: Super Contributor
timestamp: September 29, 2023, 06:11:54 pm
content: Quote from: coppice on September 29, 2023, 01:18:11 pmYou're right, the glass industry must be the biggest consumer of high purity silica sand by a vast margin. I can't see them being that bothered by grain size and shape though. It must be a bit of a hassle filtering out the right ones. As I said, I doubt it is a major cost contribution to the product.

author: MathWizard
author_rank: Super Contributor
timestamp: October 10, 2023, 11:51:40 am
content: I wonder what these 11kV 11A ones from Walmart would be? These are probably only sold online, IDK how Walmarts online market and sellers work, but I see crossover of cheap parts between ebay/Amazon/Walmart online.https://www.walmart.ca/en/ip/6x-multimeter-10-x-38mm-1000v-10a-cylinder-ceramic-fuse-white/PRD68QFYDAYDR8HI haven't killed a fuse in ages, but I don't think I have any spares, I'll probably get some brandname ones locally, for ~$15 each.

author: tooki
author_rank: Super Contributor
timestamp: October 13, 2023, 12:10:54 pm
content: Quote from: MathWizard on October 10, 2023, 11:51:40 amIt’s some third party seller. Who knows whether they’re reliable or not. The fuses shown in the listing are SIBA’s DMI series, which is a respected brand. (Some Keysight meters ship with those.) So if one trusts that the supplier will ship genuine ones, they’re a perfectly good option. However, that price is approximately 6 times too low, so I’d be very skeptical.Note also that the listing is not for 11A fuses, but for 10A ones.FYI, the SIBA part numbers for the two common DMM fuses are:11A 10x38mm: 5019906.11440mA 10x35mm: 5021006.0,44

author: seedkey
author_rank: Contributor
timestamp: October 14, 2023, 02:57:15 am
content: Its because they put sand in the fuse.Hahaha

author: boB
author_rank: Frequent Contributor
timestamp: November 24, 2023, 05:56:17 pm
content: Quote from: MathWizard on October 10, 2023, 11:51:40 amIf I look closely at your picture, I think I see SIBA fuse which is a good one. 11 A should work fine in a Fluke meter in place of a 10A.

author: johansen
author_rank: Super Contributor
timestamp: November 25, 2023, 01:02:32 am
content: so i have an 80uf, 8000v rated capacitor bank. been waiting to try it out. i have bent a quarter, but it doesn't quite have the energy to shrink one. self resonant frequency is in the 50khz range, but more like 20khz under reasonable load coils.who wants to send me some fuses?