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Multimeter fuses

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nanofrog:

--- Quote from: MacMeter on January 28, 2017, 05:18:41 am ---I've just run into this dilemma, I was shocked to see the large fuse costing 1/3 the price of the meter.

There are a few threads here about this, and I posted the same request (below) in case anyone reads those old threads. Seeing such a price decrepancy made me realize the fake/clone market For these is a real concern. I'm not going to get into the debate if "similar" fuses are ok, or good enough. In my use, there are times I might rely on them, so I'd like to find the original spec'd fuses at a reasonable price, if that's even possible?

Anyone 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!

--- End quote ---
What are the original fuses' P/N or specifications?

I ask, as you can usually find equivalents from other manufacturers. In the case of the linked fuse ($40 something), it's price is because it's rated for 1kV AC & 1kV DC. Sadly the equivalents are similarly priced (i.e. Littlefuse 0FLU011.U or 0FLU011.T).  :(

MacMeter:
FROM THE ONLINE EEVBlob BM235 USER MANUAL:

Fuse F1 for uAmA current input: 0.4A/1000V DC/AC, IR 30kA FAST fuse or better; Dimension: 6 x 32 mm
SIBA 70-172-40 FF400mA

 
Fuse F2 for A current input: 11A/1000V DC/AC, IR 20kA F fuse or better; Dimension: 10 x 38mm?Bussman DMM-B-11A?Littelfuse FLU011

David Hess:
I wonder how well it would work to take a correctly sized glass fuse and rebuild it with sand or an appropriate filler inside.

nanofrog:

--- Quote from: MacMeter on January 29, 2017, 12:42:20 am ---FROM THE ONLINE EEVBlob BM235 USER MANUAL:

Fuse F1 for uAmA current input: 0.4A/1000V DC/AC, IR 30kA FAST fuse or better; Dimension: 6 x 32 mm
SIBA 70-172-40 FF400mA

 
Fuse F2 for A current input: 11A/1000V DC/AC, IR 20kA F fuse or better; Dimension: 10 x 38mm?Bussman DMM-B-11A?Littelfuse FLU011

--- End quote ---
The uA/mA fuse (F1) isn't all that expensive (Galco carries the Siba 70-172-40 for $7.43).

They also carry the Littlefuse FLU011 for $32.10 (best price I've seen, but still on the expensive side IMHO).

The SIBA equivalent P/N = 5019906.11, and it's a LOT cheaper @ $8.13 from TME (they're located in Poland, but they do ship to the US).  :-+

mmagin:
Its not merely that these fuses dissipate energy better, they also extinguish an arc better.  I have never seen a cheap fuse rated at hundreds of volts DC.

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