[RE-wrenches] DC Rating of Square D QO?

[Bradley Bassett]

As I remember Ananda got a UL listing with a rating up to 60VDC on their
APT power centers using the QOU breakers. I think the SqD rating on those
is the same as for the QO breakers at 48VDC. I would not go any higher than
that though. Also be aware that the QO does not work well when used at
12VDC for distribution, the snap on part needs 24VDC or higher to make and
keep a good connection. I used to have to push the breakers around every
now and then to keep the lights from flickering in my old 12VDC cabin.

Brad

On Tue, Oct 26, 2021 at 2:44 AM Jason Szumlanski <
jason at floridasolardesigngroup.com> wrote:

> 5 kA 48 V DC
>
> Square D has a very good product selector with data sheets for all
> products.
>
>
> https://www.se.com/us/en/work/support/resources-and-tools/calculators-and-online-tools/ez-selectors/
>
> Jason Szumlanski
> Florida Solar Design Group
>
> On Mon, Oct 25, 2021, 8:30 PM Jeremy Rodriguez <allsolarjeremy at msn.com>
> wrote:
>
>> Hello
>> Does anyone have a definitive answer to the DC rating of the QO circuit
>> breakers?   I’ve got a potential client with an existing AC load center
>> (>20 yrs) being used for his array combiner.
>> He’s looking to add to the array, with modules that are higher voltage of
>> course.
>> Thanks in advance.
>>
>> Jeremy Rodriguez
>> Solar Installation / Design Expert
>> All Solar, Inc.
>> 1453 M St
>> Penrose Colorado 81240
>>
>> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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