It seems to me the only viable option is to not put the electronics in any building with other uses. That avoids the requirement (unless that exception is changing).
A line of pre-fab, stand-alone enclosures might be a direction for any manufacture or integrator to explore. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Tue, Jan 27, 2026 at 11:55 AM Sue Stankevitz via RE-wrenches < [email protected]> wrote: > At this time Midnite Solar does not have a replacement for the string > level RSD on our roadmap. With the new UL requirement for double redundancy > failsafe requiring substantial design change the decision was made to no > longer push forward in that market. > > Sue Stankevitz > > MidNite Solar, Inc. > > (360) 403-7207 (XT122) > > -----Original Message----- > From: RE-wrenches <[email protected]> On Behalf > Of Brett Stigile via RE-wrenches > Sent: Monday, January 26, 2026 10:42 PM > To: [email protected] > Cc: Brett Stigile <[email protected]> > Subject: [RE-wrenches] MidNite MNSSR-600-SS > > I was hoping to do an up coming job with MidNite Solar (MNSSR-600SS) > string level shut down. However, I just learned that the product has been > discontinued. I'm moving forward with AP smart because I don't have time > to mess with it. > > However, I have several questions. > > Will a similar new product take its place? > > If a string level shut down device is available again will that satisfy > 690.12 code requirements for roof mounted residential under NEC 2023 or > NEC 2026 on it's own? Or does UL3741 come into play? > > For example, would a MidNite AIO with Unirac NXT racking (which is > UL3741) with string level shut down and of course wiring everything nice > and neat with appropriate listed wire management comply with NEC under > 2023 or 2026 code? > > I'm just trying to figure out if string level shut down is a viable option > with new code cycles or if it is a waste of time. > > thank you > > -- > Brett Stigile > Owner/Renewable Energy Electrician > 503-317-7950 > [email protected] > > Oregon Sun Wrangler LLC > CCB: 240661 > License: 66LRT > NABCEP PV Installation Professional > certification: PV 100414-008123 > _______________________________________________ > 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 > > _______________________________________________ > 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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