Hi Jeremy, According to the QO cut sheet the answer is 48VDC:
https://download.schneider-electric.com/files?p_Doc_Ref=0730CT9801 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. On Mon, Oct 25, 2021 at 8:30 PM Jeremy Rodriguez <allsolarjer...@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. > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > -- Chris Sparadeo C_802-369-4458 H_802-728-3059
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
