[RE-wrenches] Fuses for battery busbars

[Tyrone Houck]

My thought is that if a class T burns up with the lug side floating it will
potentially leave the live battery cable loose in the enclosure whereas the
marine terminal fuse will still keep the cable captive and prevent a
possible secondary fault condition.




On Sat, Nov 15, 2025, 3:17 PM jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> do you mean like this?
>
>
> [image: 78976_primary.jpeg]
>
> Marine Rated Battery Fuses
> <https://www.delcity.net/store/fuses-fuse-accessories/taps/marine-rated-battery-fuses/?mkwid=&crid=&mp_kw=&mp_mt=&gad_source=1&gad_campaignid=18195815732&gbraid=0AAAAAD-3-ftBrJhT7rwpLMbxfXZIuexqw>
> delcity.net
> <https://www.delcity.net/store/fuses-fuse-accessories/taps/marine-rated-battery-fuses/?mkwid=&crid=&mp_kw=&mp_mt=&gad_source=1&gad_campaignid=18195815732&gbraid=0AAAAAD-3-ftBrJhT7rwpLMbxfXZIuexqw>
>
> <https://www.delcity.net/store/fuses-fuse-accessories/taps/marine-rated-battery-fuses/?mkwid=&crid=&mp_kw=&mp_mt=&gad_source=1&gad_campaignid=18195815732&gbraid=0AAAAAD-3-ftBrJhT7rwpLMbxfXZIuexqw>
>
>
> On Nov 15, 2025, at 4:10 PM, Tyrone Houck via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> I think I found what I was picturing...has anyone used Marine Rated
> Battery Fuses/terminal fuses in a battery combiner situation? Or would I be
> better off just bolting a class T fuse in between my lug and busbar.. the
> class T almost seems stronger but with more exposed metal..
> This application isn't specific to a certain busbar but for discussion
> sake picture 4 batteries landing on a MNBCB 1000/2000
>
>
>
>
> On Sat, Nov 15, 2025, 3:00 PM Tyrone Houck <tyronehouck at gmail.com> wrote:
>
>> Yeah. I'm looking for something with a smaller footprint, ideally with
>> one hole that physically goes between the lug and post.. I've seen them but
>> can't remember the manufacturer.. I guess I could bolt a class T to the
>> busbar and float the other end and just bolt the lug to it..
>>
>>
>>
>>
>> On Sat, Nov 15, 2025, 2:39 PM jay via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> I’m not sure what buss bar you have but have you looked at Class T fuses?
>>>
>>> jay
>>>
>>> On Nov 15, 2025, at 3:11 PM, Tyrone Houck via RE-wrenches <
>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>
>>> Greetings Wrenches,
>>> I am looking for a product that allows a 250A fuse to be added at the
>>> post connection of a battery busbar. Specifically, nominal 48v combiner
>>> busbar for multiple lifepo4 batteries. What I really want is something that
>>> can be added right at the connection point of the busbar where the lug
>>> attaches to the busbar. Compact form function helps...something similar to
>>> a "fusible link" type thing but not cheap junk and rated for 50-60v. I like
>>> the little fuses that victron uses in their battery but want something that
>>> can retrofit into a conventional battery busbar. I appreciate any
>>> suggestions! Thank you in advance!
>>> Sunny Regards,
>>>
>>> Tyrone Houck
>>> Oregon Solarworks LLC
>>> CCB #204937 LRT #076
>>> 541-787-1366
>>> tyrone at oregonsolarworks.com
>>>
>>>
>>>
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