You'd save yourself a lot of trouble and just get the proper/safer holder and reputable fuse: https://www.donrowe.com/TFB1-200-200A-Class-T-Fuse-Kit-p/tfb1-200.htm
Not in stock until next month.
Not in stock until next month.
Beware of Amazon's class t fuses
- Thread starter Osmethne
- Start date
Osmethne
Solar Enthusiast
This is exactly what I ordered. But like you said, out of stock for another month.
I looked at mouser but donrowe makes it way easier.
Brucey
Solar Wizard
I actually ordered a spare T fuse from Mouser on Mar 7 since they made it look like it was available but I am still waiting.. they claim next month as well. I had been getting updates and last month it was "in production".
Brucey
Solar Wizard
Just the holder though there, they have the non ignition rated one as well
robbob2112
Doing more research, mosty harmless
Current connected has a good price on most of the class T fuses.
www.currentconnected.com
www.currentconnected.com
And my favorite style
Blue Sea Class-T Fuse ~ Current Connected
The Blue Sea Systems Class T Fuse offers a high interrupt capacity for larger battery banks. Perfect for systems need a stronger fuse. Specifications: 125V DC Maximum Voltage 110A - 400A Compatible with BlueSea Class T Fuse Weight: 0.3lbs
www.currentconnected.com
BlueSea Class-T Fuse Block ~ Current Connected
The BlueSea Class-T Fuse block allows the use of Class-T fuses for fast acting circuit protection. Specifications: 320A Maximum Amperage 160V DC Maximum Voltage 5/16" - 18 (M8) Terminal Stud Size Weight: 1.10lbs
www.currentconnected.com
And my favorite style
Tulex
Solar Wizard
Best I could tell was that hey had yellow clips.
Osmethne
Solar Enthusiast
As far as I can tell it tries to isolation the chamber the fuse is in from the air around it. I think the idea is in case there's something flammable in the air then the fuse blowing won't ignite it.
Brucey
Solar Wizard
They enclose the fuse section in a little plastic section of the cover. The idea being that if operating in an explosive atmosphere, the blowing of the fuse may cause an ignition of that small enclosed space. The clips stop the cover flying off and a larger ignition of vapors.
Given that LFP cells can vent significant qtys of Hydrogen gas upon failure I would recommend the ignition protected versions.
Tulex
Solar Wizard
Unless it's air tight, not going to make a difference. Especially for me, where my fuse is inside my battery case.
Typical automotive battery starter cables are only built to handle high current loads for a few seconds or minutes at most. You will be better served with either welding cable with properly crimped on terminals or at least buy from a company that sells cables designed for inverter usage.
In some cases a T fuse wired directly ( SS bolts connecting cables to fuse with nothing between them) without holder would be preferable to a low quality holder.
Robert Ibe
New Member
- Joined
- Feb 17, 2022
- Messages
- 46
I would agree with most here , copper to copper with NO-OX-ID A-Special
is best practice. Anything else is a nogo unless it is silver.
I like to squeeze a dollar until it yells uncle
So
I bought my blue sea class t fuse holders here.
www.continuousresources.com
And I bought my blue sea class t fuses from electricalhub as continuous resources didn't have the 250 amp fuses I wanted in stock.
www.electricalhub.com
I called both companies before ordering as it was my first time ordering from them and it was easy to get a human on the line and fast shipping.
I bought 5 of each so with shipping it was a good deal ,YMMV.
is best practice. Anything else is a nogo unless it is silver.
I like to squeeze a dollar until it yells uncle
So
I bought my blue sea class t fuse holders here.
Search: 5 results found for "BLUE SEA SYSTEMS CLASS T FUSE"
We make renewable energy more accessible for homes and businesses by providing quality solar power system components, including solar panels, solar power invert
www.continuousresources.com
And I bought my blue sea class t fuses from electricalhub as continuous resources didn't have the 250 amp fuses I wanted in stock.
Search results for: 'blue sea class t fuse'
I called both companies before ordering as it was my first time ordering from them and it was easy to get a human on the line and fast shipping.
I bought 5 of each so with shipping it was a good deal ,YMMV.
Last edited:
Thanks for the heads up!!!
Last edited:
robbob2112
Doing more research, mosty harmless
I have both sizes, there is a tiny amount of captive air - the plastic completly surrounds the fuse. Unless the environment was explosive when the fuse was installed it is ignition safe, which means in an explosive hydrocarbon environment if it blows and a spark escapes the fuse itself it WILL NOT ignite the hydrocarbons in the air.
They are made by Littlefuse or bussman for Blue Sea.
Go read here and follow the links to see what the testing requirements are
Class T Fuse Block with Insulating Cover - 225 to 400A - Blue Sea Systems
Allows use of Class T fuses for high speed circuit protection of electronic equipment and inverters.
www.bluesea.com
Pictures of mine
House burned down
Earlier I stated there was a universal class T holder - drum roll, I was wrong - I know I know you are either thinking "WHAT!! never" or you are thinking "What, again??" Here are both sizes of the "ignition protected version. There is indeed a pocket that is totally isolated from outside air...
diysolarforum.com
I see. Now it's making sense.
Who makes this one?
cs1234
Solar Wizard
- Joined
- May 9, 2022
- Messages
- 2,791
Blue Sea.
robbob2112
Doing more research, mosty harmless
That is the bottom part of the Blue sea ignition safe ones. See the linked post from the house burned down thread
A man of my own heart, “I save each penny I can, then order 5 extra for spares to save on shipping”I would agree with most here , copper to copper with NO-OX-ID A-Special
is best practice. Anything else is a nogo unless it is silver.
I like to squeeze a dollar until it yells uncle
So
I bought my blue sea class t fuse holders here.
Search: 5 results found for "BLUE SEA SYSTEMS CLASS T FUSE"
We make renewable energy more accessible for homes and businesses by providing quality solar power system components, including solar panels, solar power invert
And I bought my blue sea class t fuses from electricalhub as continuous resources didn't have the 250 amp fuses I wanted in stock.
Search results for: 'blue sea class t fuse'
I called both companies before ordering as it was my first time ordering from them and it was easy to get a human on the line and fast shipping.
I bought 5 of each so with shipping it was a good deal ,YMMV.
CaliSunHarvester
Solar Enthusiast
late to this thread but..
I clicked on the amazon link, and at the top it says "last purchased April 1st, 2023"
yes, I have the same one in the same housing in my 24V system.
The PHEV is charging right now, which means 1400W AC are used, and about 60A flow through this class T.
I took my IR camera, but there's nothing warm except the inverter. Lowest temp in the photo is 68F, the inverter is at 87F.
My lugs are smaller, so I did not need any washers.
Bluedog225
Texas
- Joined
- Nov 18, 2019
- Messages
- 3,299
Yeah. I suspect the fuse is fine. There are other issues here.
Brucey
Solar Wizard
Yes, if you can't make you own at least get something of quality like windy nation via Amazon:
robbob2112
Doing more research, mosty harmless
Can you tell who them manufacturer of the fuse is? from the numbers I can't find a current vs time curve chart for it specifically? I wanted to see if that matches the standard JLLN body style fuse. All I can read on the amazon ad is HFS21J for a part number and they didn't show the other side.
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