Fuse Replacement for EEVBlog Meter - Page 1
Forum section: electronics / testgear

author: SpaceCow
author_rank: Contributor
timestamp: January 04, 2017, 12:11:24 pm
content: I recently blew the fuse on the micro/milliamp section of my BM235. On the front of the meter, it says "600mA MAX HBC FUSED." However, when I took the fuse out to change it, the SIBA fuse itself says 400mA on it. What is the correct value to buy? What is the reason for this disagreement in values. For reference, the fuse says:SIBAFF 400mADMI 1000v70 172 40Thanks!

author: TheAmmoniacal
author_rank: Unknown
timestamp: January 04, 2017, 01:37:35 pm
content: The manual says:QuoteThe exact fuse is:Fuse F1 for microA/mA current input:0.4A/1000V DC/AC, IR 30kA FAST fuse or better; Dimension: 6 x 32 mm SIBA 70-172-40 FF400mAThe time-current curve is attached, not sure how to read it..

author: SpaceCow
author_rank: Contributor
timestamp: January 04, 2017, 02:05:20 pm
content: Quote from: TheAmmoniacal on January 04, 2017, 01:37:35 pmThe manual! What do ya know...Can't believe I forgot to check that. Thanks for your help.What is a good place to buy this fuse?This one is $4 plus shipping on Digikey. Is that my best bet?http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=215477623&uq=636191142748011468

author: TheAmmoniacal
author_rank: Unknown
timestamp: January 04, 2017, 02:09:21 pm
content: No problem, nobody checks the manual!

author: turbotemp
author_rank: Newbie
timestamp: January 06, 2017, 08:23:35 pm
content: Many newer meters use high energy fuses for safety when they're used on high energy circuits. It becomes relevant when you accidentally measuring amps across 400v AC utility or across unprotected electric vehicle battery pack. You can use a common 0.5A fast blow 1/4" 250v glass fuse and that's what they've always shipped meters with before CAT III/IV thing became the thing.

author: MacMeter
author_rank: Frequent Contributor
timestamp: January 28, 2017, 04:34:43 am
content: 1-27-2017Anyone find a reputable online company, (I'm in the US) that sells both types of replacement fuses at reasonable prices? BM235 model.I looked at both Mouser, and GreyBar, both large companies, but a single large fuse is over $40/each, and of course I can find them on eBay, for far less, but I have no idea if they are Chinese clones, since China is the source. The price range between them is crazy, 3 large fuses cost as much as the base meter. THANKS!

author: ez24
author_rank: Super Contributor
timestamp: January 28, 2017, 04:53:41 am
content: Quote from: MacMeter on January 28, 2017, 04:34:43 amThat is why for most times I use a $5 HF meter for currents.

author: MacMeter
author_rank: Frequent Contributor
timestamp: January 28, 2017, 05:21:28 am
content: Quote from: ez24 on January 28, 2017, 04:53:41 amSure, but I'd like to use my NEW meter, and have a few spare fuses in the bag.

author: ez24
author_rank: Super Contributor
timestamp: January 28, 2017, 05:44:25 am
content: Quote from: MacMeter on January 28, 2017, 05:21:28 amI use my NEW meter for voltages and the HF for currents

author: sequoia
author_rank: Unknown
timestamp: January 28, 2017, 06:07:18 am
content: Quote from: MacMeter on January 28, 2017, 05:21:28 amThis sure is one elusive fuse, unless one is prepared to order large quantity... (last I checked it was not readily available in small quantities from any major retailers in US).Closest thing I found was 500mA version of this same fuse, as apparently some Amprobe DMMs use it.Search for "Amprobe FP500", I recall getting 4 fuse set from Newark for about $7....

author: MacMeter
author_rank: Frequent Contributor
timestamp: February 13, 2017, 05:30:09 pm
content: While I like the BM-235, my frustration finding the SIBA 7017240.0.4 replacement fuse continues. I'm trying to avoid eBay and Amazon as there is no way to know if you are getting a clone/copy. I called SIBA USA, they gave me 3 US websites to try. Only one even listed the fuse, no stock, minimum order of 10, and it's a SPECIAL order. Not a good situation.

author: prwiley
author_rank: Contributor
timestamp: May 11, 2019, 02:56:52 pm
content: I blew the SIBA fuse as well and have searching for US sellers as well and not finding it anywhere except eBay. Very frustrating. Has anyone found a source?

author: Candid
author_rank: Regular Contributor
timestamp: May 11, 2019, 07:11:10 pm
content: Welectron is selling them and sending to USA is not expensive:https://www.welectron.com/SIBA-701724004-Fuse-63x32mm-04A-1000V

author: iainwhite
author_rank: Unknown
timestamp: May 11, 2019, 07:26:47 pm
content: There is a UK eBay seller called JPSCalibrationServices that sells them in packs of 5.For the 400mA fuse I think his part number is 'JPSF083' and you are looking at about $26 for 5 fuses including shipping to the US.I am in the US and have purchased from JPS in the past and received genuine Siba fuses.

author: bc888
author_rank: Regular Contributor
timestamp: May 12, 2019, 12:28:27 am
content: As I'm kind of a dumbass and learn things the hard and painful way, figured I'd I simply buy the fuse from Dave in advance of me blowing one. He didn't have them at the time, I looked and was surprised there weren't available everywhere. Eventually Dave got them in and they came fairly fast. To the point (finally) he has them now, the price is fair, the shipping is fair and I was happy they came from far away so fast. Click the link, stock up.https://www.eevblog.com/product/multimeter-fuse-pack/Please note they are AUthentic. (he says:-)

author: paul_g_787
author_rank: Frequent Contributor
timestamp: January 31, 2022, 03:12:43 pm
content: I actually have some of these fuses left over spare from when I ordered a pack of them a while back.SIBA 70-172-40.0,4 400mA 1000V AC&DC 30kA IR 6mmx32mmIf anyone needs one then I would be willing to send one for cost plus postage which is 96p with royal mail in the UK. Send me a PM