about fuses, dmm-b-44/100-r - Page 1
Forum section: electronics / testgear

author: fluff
author_rank: Newbie
timestamp: November 04, 2022, 10:00:42 am
content: Hello,One of the fuses in my brymen blew (dont ask me how because i have no idea, I did not put any big loads on it). Shopping for it I find the bussmann dmm-b-44/100-r for prices that range from 6 euros (aliexpress, ebay) up to 50 euros in specialized shops. Now, can someone tell me how much I should expect to pay for it ?Thanks!

author: PushUp
author_rank: Regular Contributor
timestamp: November 04, 2022, 03:29:49 pm
content: As long as amazon is seller and shipper you will definitely get no fake, so you are fine. However, they have a minimum order quantity. Generally speaking a good fuse by Bussmann costs between 10 Euro and 12 Euro. Anything below is probably fake...The last time I ordered from another shop "Bussmann", I got "Littlefuse", but I accepted it.My last purchase, you probably have to change ".de" into your country:11Aminimum order quantity 3 times: á 11,99 Eurohttps://www.amazon.de/gp/product/B000VREC5G/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&th=1440mAminimum order quantity 5 times: á 10,99 Eurohttps://www.amazon.de/gp/product/B000VRFKUC/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8Cheers!

author: wraper
author_rank: Unknown
timestamp: November 04, 2022, 03:46:09 pm
content: The strange part is that Fluke branded fuses are cheaper.https://www.fluke.com/en-us/product/accessories/fuses/fluke-11a-1000v-fuses-5-pack$47 for a pack of 5. All fuses on Aliexpress are counterfeit. You may get some real ones on ebay if seller acts as re-shipper who orders them from distributor. On Amazon, unless it's amazon itself or some reputable company selling on amazon, most likely they will be fake. I suggest SIBA 5021006.0.44 and 5019906.11 as the cheapest optionshttps://www.tme.eu/en/details/5021006.0.44/fuses-10-3x38mm-fast/siba/5021006-0-44https://www.tme.eu/en/details/5019906.11. Distributors don't sell them at ridiculous prices which are close to some multimeters with those fuses inside. Also they actually have 3 times better maximum interrupting current rating.

author: PushUp
author_rank: Regular Contributor
timestamp: November 05, 2022, 08:34:18 am
content: Just to prevent the next blown 440mA-fuse, as it is annoying to pay so much money for a new one:Even with small current, you often also have to deal with "inrush current". The "MAX 0.6A" on your meter are misleading. You should be way under 400mA, to be on the safe side the next time. It might be tricky to estimate from A-measurement to mA-measurement, that it is safe, to change the test leads, so that you might want to use the record function in A-mode to capture some spikes about 0.4A, which does not survive your expensive 440mA fuse, before switching to the mA range itself...However, I don't know if the record function of the Brymen is also able to measure 250µS to capture peak values like the Fluke 289 does for example?That is the reason, why I prefer using my Gossen Metrawatt, when measuring current and yes, I don't care about the doubled used common, as it is precise enough for me and saves me a lot of money, as I will never ever have to buy a 440mA fuse again, because the Gossen Metrawatt does not have one! ;-)Cheers!

author: wraper
author_rank: Unknown
timestamp: November 05, 2022, 09:04:27 am
content: Another option is to buy them from Brymenhttps://brymen.eu/shop/fuse-0-44a-1000v-10x38-mm/https://www.tme.eu/en/details/bm-s_fuse-0.44a/accessories-others/brymen/

author: wraper
author_rank: Unknown
timestamp: November 05, 2022, 11:30:14 am
content: Over a link from PushUp I noticed it's with cheaper shipping from Lemona as a seller. It's a proper electronic component retailer with physical shops in Lithuania and Latvia and Estonia.QuoteFluke uses both suppliers, so if you buy it as Fluke part number, you should not expect particular brand.

author: fluff
author_rank: Newbie
timestamp: November 08, 2022, 12:07:41 pm
content: Thank you both for your answers, they have been very helpful

author: fluff
author_rank: Newbie
timestamp: November 18, 2022, 10:26:23 am
content: In case someone comes across this thread, the reason my fuse blowed is that I used the multimeter to measure the amps running through my car battery. I was looking for a parasitic leak. When fixed I knew the car did not consume more than 20 miliamps when parked. However when you first connect the multimeter in series to the battery there is a rush of current of 2,5 amps or so then it goes to its normal 20 miliamps. I guess that rush blew my fuse. This lesson cost me about 8 euros, hope someone can save them.

author: 2N3055
author_rank: Super Contributor
timestamp: November 18, 2022, 11:58:18 am
content: Welectron has them at good price.

author: J-R
author_rank: Super Contributor
timestamp: November 19, 2022, 02:01:44 am
content: Try using the mV range on your DMM to measure across each fuse. There are charts available for easy lookup. (One was shamelessly stolen and is attached.)