Kirk: I recently installed a Kohler RDT transfer switch that does exactly what you specified. The RDT is an AC-Seeking ATS. There is an option to create a contact closure upon failure of the primary AC input.
Even though the device is Kohler branded it has no proprietary connections to the genset- it is generator agnostic. The unit comes in several standard sizes. It can be ordered as service equipment and with or without on-board distribution. It’s a nice piece of kit. I can send the manual if you’d like. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Sat, Mar 1, 2025 at 7:03 AM Kirk Herander via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hello All, > > I am looking for a non-generator brand specific 100A ATS to switch to > secondary power when the utility goes out, period. IMO this means the > contactor coil would have to be controlled > by the utility AC, either 120 or 240,. If utility fails, the contactor > switches to N/C secondary power. No outside control signals required. > Thanks in advance. > > -- > > *Kirk Herander / **kirkh@vermont.solar <kirkh@vermont.solar>* > > *Owner|Principal, VT Solar, LLC* > > *Celebrating our 34st Anniversary 1991-2025!!* > > dba Vermont Solar Engineering > > 802.559.1225 > _______________________________________________ > 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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