All they have locally are the 2F versions which suck to install.
William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Mon, Nov 17, 2025 at 8:44 PM MDElectricSolar <[email protected]> wrote: > We are having no issues sourcing these from our primary vendor, Greentech. > > Michael D Nelson > MD Electric & Solar, Inc. > 707-684-0064 mobile > 707-884-1862 office > www.mdelectricsolar.com > www.facebook.com/mdelectricandsolar > > > On Nov 17, 2025, at 7:11 PM, William Miller via RE-wrenches < > [email protected]> wrote: > > > > Friends: > > > > I am having trouble locating these RSDs. Very few vendors appear to have > these and I can’t get any to call back and verify they have them. I can’t > get Tigo to return my calls. Does anyone know if these are discontinued? > > > > What are the rest of you doing for rapid shutdown? I don’t trust Alps: I > have heard too many horror stories. It seems the form factor is too small > to contain arc suppression measures. > > > > Somewhere I saw as an alternative the Tigo TS4-A-O. These are > optimizers. I worry these will fight with the MPPT algorithm in the > inverter or charge controller. There is also the TS4-A-S which has > shutdown and monitoring. > > > > All input is welcome an appreciated. Thanks in advance. > > > > William > > > > Miller Solar > > 17395 Oak Road, Atascadero, CA 93422 > > 805-438-5600 > > www.millersolar.com > > CA Lic. 773985 > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[email protected]/ > 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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