Good circuit breakers for batteries?

[thender]

I was curious if anyone had recommendations for good circuit breakers for batteries?

I noticed anything liquid resistant is usually fro 24/48v marine stuff. I have three 20S10P batteries running in parallel, all connected to this bridge rectifier https://www.ebay.com/itm/Amico-SQL-100A-Amp-1000V-3-Phase-Diode-Metal-Case-Bridge-Rectifier-TS/322094677055?hash=item4afe56bc3f:g:8SQAAOSwCTddSvML This way, if one of them is slightly less charged than the other they don't try to charge each other at 60-80 amps. I have one charge port on the bridge rectifier so I can charge all three of them at the same time, and one discharge port.

My goal was to be able to make really long distance trips and to put less mileage on each battery by having them work in parallel. If each battery is working around 1/3 the power I am actually using, I imagine they will last longer.

I wanted to put a breaker going to each battery so that if anything really stupid happens, controller shorts, battery charger goes kabloooey, things don't blow up too bad on a long trip. Something that would trip if it went over 60-80 amps.

Since I am never using over 60 amps, even peak, I can't imagine there being any reason for any individual battery to go over 60 amps.

Any suggestions appreciated.

 

[Peterfr12]

Hi Thender,

I use this one for a 20s16p battery:
https://torquetech.co.uk/collections/miniature-circuit-breakers-mcbs/products/100a-dc-circuit-breaker-mcb-solar-fuse-250v-single-pole-1p-ebike-tob1z-125-c100?variant=10154881679407
100A one out of stock

but you can use this one
https://torquetech.co.uk/collections/miniature-circuit-breakers-mcbs/products/80a-dc-circuit-breaker-mcb-solar-fuse-250v-single-pole-1p-ebike-tob1z-125-c80?variant=10154889183279
80A max so good enough for your application

check the page for circuit breaker on the torquetech website. Different models are proposed.
regards,
Peterfr