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 < ja...@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 <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 >> >> _______________________________________________ > 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 > >
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