Inline fuse for 72v 65a lyens infineon

[SilverSurfer]

I am making an order any minute, this is in my cart but I want to know if it will work for my 72v 65a system?

http://www.powerwerx.com/fuse-holders-fuses/resettable-circuit-breaker-cooper-bussmann.html

Resettable Circuit Breaker Cooper Bussmann
These high-amp, Type III circuit breakers are typically used in automotive auxiliary and accessory circuits for trucks, buses, RVs and marine applications. High-amp circuit breakers also have applications in battery charger systems and DC audio systems.


Amps SKU Availability Price
50 CB185-50 In Stock On Sale $29.99

70 CB185-70 In Stock On Sale $29.99

120 CB185-120 In Stock On Sale $29.99

150 CB185-150 In Stock On Sale $29.99

 

[SilverSurfer]

The reason I question is because the voltage is so high. But you guys said the automotive relays would work, so Im wondering.... is only the amperage important, or do I need to match the voltage too when it comes to fuses? This seems like a great option for fuse, and reusability. Thanks for you advise! SS

 

[El_Steak]

I guess it depends what is your goal with the breaker/fuse.

In my case, regular use over current protection is handled by my controller and cycle analyst. My goal with the fuse is to limit damage to the batteries / fire / etc. in case I do something goofy like shorting the leads on the pack.

For my 100V / 100Amps LiPo-based setup, I use 200Amps ANL fuses bought from ebay (4$ for 2 or 15$ for 10 shipping included!).

I think that you will get a faster response from fuses than from a breaker.

You can also have a bit more info look at this thread. One of the poster uses a breaker but says its quite slow to trip:

http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=15225

 

[EMF]

I use a DC circuit breaker for my ebike and it works great. A circuit breaker will protect your controller just fine as long as you pick the correct one. I prefer a circuit breaker over a fuse, as it can detect a high amp situation and shut down after a short delay, or it can trip immediately upon a sense to ground or to protect your system from short circuits * a few times*. I have 100 A123 cells in my pack and the release of energy could very well destroy any breaker if I were to go to a dead short and could carry current long enough through it. Having said that, the one you picked seems inappropriate for your bike. I think that breaker is rated at 27 volts if I am not mistaken and I doubt I am considering the thing costs only 29 dollars. The one I got is rated for up to 80 volts @ 40 amps DC and I am running 66 volts and I think it cost 2 or 3 times more than that one you have in your cart. I do not get nuisance trips, but I can overload the breaker if I want and it does trip and the Crystalyte controller is no worse for wear. Nice to just reset the thing and go on, and not fuss with a fuse. Takes like 2 seconds.