<div dir="ltr">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. <div><br></div><div>Brad</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Oct 26, 2021 at 2:44 AM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com">jason@floridasolardesigngroup.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><span style="color:rgb(98,100,105);font-family:arial;font-size:12px">5 kA 48 V DC</span><div dir="auto"><br></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px">Square D has a very good product selector with data sheets for all products. </span></font></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px"><br></span></font></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px"><a href="https://www.se.com/us/en/work/support/resources-and-tools/calculators-and-online-tools/ez-selectors/" target="_blank">https://www.se.com/us/en/work/support/resources-and-tools/calculators-and-online-tools/ez-selectors/</a></span></font></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px"><br></span></font></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px">Jason Szumlanski</span></font></div><div dir="auto"><font color="#626469" face="arial"><span style="font-size:12px">Florida Solar Design Group</span></font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 25, 2021, 8:30 PM Jeremy Rodriguez <<a href="mailto:allsolarjeremy@msn.com" target="_blank">allsolarjeremy@msn.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">
<div>Hello </div>
<div>Does anyone have a definitive answer to the DC rating of the QO circuit breakers? I\u2019ve got a potential client with an existing AC load center (>20 yrs) being used for his array combiner. </div>
<div>He\u2019s looking to add to the array, with modules that are higher voltage of course. </div>
<div>Thanks in advance. </div>
<br>
<div dir="ltr">Jeremy Rodriguez
<div>Solar Installation / <span style="font-size:13pt">Design Expert </span></div>
<div>
<div>All Solar, Inc.
<div>1453 M St<br>
<div>Penrose Colorado 81240</div>
<div><br>
</div>
<div>Sent by Jeremy's iPhone. Sorry for typos and shorthand. </div>
</div>
</div>
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