robbob2112
Doing more research, mosty harmless
Those big crank it up contests and cars that rattle your teeth use them.... the abs can melt
Fuse vs breaker
- Thread starter fatjay
- Start date
He'll grab it only once.
My initial purchase of Class T fuses case from Mouser.com. They almost always have a good inventory of popular items. The depth of their product lines is impressive. My second wave of Class T purchases came from <gasp> Amazon. I stick to Littelfuse (<- correct spelling) for the fuses that matter, which is most of them.
I have Class T, MEGA and CNN fuses in my system. That's the big fuses on the 48 volt sides. I'm using a couple of MRBF on the lower amp 48 volt and 12 volt side. I also have the typical automotive fuses for the a couple of minor 12 volt circuits.
42OhmsPA
What's in a title?
I've grabbed it multiple times checking for heat when I didn't feel like getting the thermal.He'll grab it only once.
Best price and fairly quick shipping is from https://www.donrowe.com/class-t-fuse-kits-and-fuses-s/1852.htm
DPC
Solar Wizard
Generally Fuses are better at protecting things.
They work once.
Breakers are less accurate when they open, and have to work over and over again.
They do but they age you need to be aware of that
Why not take orders and ship them to us in the USA?Sure, I use a Jean-Muller disconnector with NH-00 class fuses...
Jean Muller combined KETO-00 fuse holder and battery disconnect
Jean Muller fuse switch disconnector KETO size 00 body (battery isolator)essandsolarsolutions.co.uk
but other makes are available, - I linked to a few in this posting:-
My rule of thumb is that the fuse should be rated 25% greater than your regular expected usage and the cable rated 25% above the fuse. Fuse must always be less than cable rating.
IME, I'd look at Mersen, ABB, Eaton and Jean-Muller.
...MERSEN | NH fuses and fusegear
Mersen is a leader in the protection of DIN systems. Our product encompasses a complete range of NH Switch Fuse Disconnector's and any class of NH power fuses : gG, aM, gTr. These devices must be handled by a qualified professional. Visit Electrical Power websitewww.mersen.co.uk
I believe I found the spec sheet but it isn't clear what the DC breaking capacity of them are?
LOL... a) I couldn't afford the liability insurance and b) your new administration would probably slap on 300% import duty
DPC
Solar Wizard
Its a reputable brand.
I've seen Muller products, mostly on Swedish made equipment.
Not common I must admit.
I've seen Muller products, mostly on Swedish made equipment.
Not common I must admit.
DPC
Solar Wizard
I am well aware.it's a German brand... which is where NH class fuses were invented, so you'd hope they know what they are doing
Germans love to engineer a level and complexity into things that sometimes makes them more reliable but harder to service.
Sometimes You need to step back and understand what you need VS what you want or what you are trying to project by doing something one way or another.
This is a very common Redspot brand fuse holder I use a lot.
They can be fused up to 200 amps and hatt made them common in my industry back in the day was the fact you could reach and and touch any part of it and not get a shock.
This was a very nice feature in the open panel board days when I would be faced with rows of open wiring and components.
Most home brew solar installations seem to be wired the way we did back decades ago and I like the idea of simple easy disconnect means and protection.
Your choices for your own reasons...
robbob2112
Doing more research, mosty harmless
DPC
Solar Wizard
Depends what you order.
T, J, FES....
I use a lot of FES HRC-II fuses.
I don't think these are Common in the USA
They are a British standard BS88.
Great little fuses, made for short circuit interrupt, they are fast, with a DC rating.
About 90% of fuses in the style of holder I showed are an FES.
They will bolt into a lot of Canadian and American made holders.
In other cases use a kit, I used a kit to put them in Allen Bradley starters.
This is one of those places where Canadian and American electrical equipment differed at one time.
Almost everything up here used CCL, Canadian Allen Bradley, Amalgamated electric, CEB....
Our stuff was designed to use a lot of BS spec fuses and American Fuses too.
My drawers are full of fuses I seldom think about.
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As follow up I ordered two 125A class T fuses with holder for $120 including shipping (USPS) from donrowe.com at 1:23PM CST and got ship notice at 5:01PM CST.
Daddy Tanuki
Emperor Of Solar
no they are not... when you have 12 optima's and multiple stiffening caps, class T is barely enough at times. imagine 3 alternators run with a hydraulic pump and motor setup and the alternators are in the back of the van next to the amps and subwoofers and each alternator is wired and setup for 450 amps of current at 14.7 volts.... trust me you could more than weld with my old demo car. One of my co-workers let the main gorund cable slip and a piece of 4 aught cable exploded. it did nto catch fire, it became the fuse and exploded showering him with molten copper.
Daddy Tanuki
Emperor Of Solar
dare you to stick it to your tongue like a 9 volt.......
Brett V
Mad Scientist
I stand corrected then. I’ve never seen a car system that extreme.
Daddy Tanuki
Emperor Of Solar
this was a demo car from the height of the car audio boom in the late 90's it won 4th place in Japan that year for sound quality and 3rd for SPL. it was a demo car for the shop i ran. a 1995 serran cargo van that was dropped custom painted, hand made ground effects and custom paint. According to the rules at the time it sat at the upper end of the 600 watt pro class. every amp was a high current orion amp from back when they were made in tempe arizona. they came form the factory with two 40 amp AGU fuses inside the case that we removed and replaced with straight copper slugs... fried a couple of them that year actually burnt the entire board so badly the Orion Japan rep took one back to the company and put the board in a display case to showcase my ability to destroy things.
Brucey
Emperor Of Solar
Thus forever branding him with the name "Pretty boy"
Zwy
Emperor Of Solar
Buy the complete holder and Class T from Don Rowe. $59.99 I ordered 4 or 5 more the other day and those were at my door in 3 days or less.
fatjay
Solar Wizard
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