<div><div dir="auto">Hi Jeremy,</div><div dir="auto"><br></div><div dir="auto">According to the QO cut sheet the answer is 48VDC:</div><div dir="auto"><br></div><div dir="auto"><a href="https://download.schneider-electric.com/files?p_Doc_Ref=0730CT9801">https://download.schneider-electric.com/files?p_Doc_Ref=0730CT9801</a></div><br></div><div dir="auto">My guess is that your string voltage would be much greater than that. Not sure your exact application, but for the slight added cost, I would definitely suggest using a reputable NEMA3R combiner/disco with 300VDC breakers and throwing away the ancient load center. </div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 25, 2021 at 8:30 PM Jeremy Rodriguez <<a href="mailto:allsolarjeremy@msn.com">allsolarjeremy@msn.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">
<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>
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</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div>Chris Sparadeo</div><div><br></div><div><br></div><div>C_802-369-4458</div><div>H_802-728-3059</div><div></div></div></div></div></div></div>