[RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?

[Michael Morningstar]

Ditto what William said about those micro-switches. They really need to be
fine tuned


On Wed, Jul 26, 2023 at 4:29 PM William Miller via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Mick:
>
> Square D offers a set of auxiliary contacts on the double throw switches.
> It is ordered by adding a suffix to the model number. Check the footnotes
> in the Digest. My supplier at CED can hook you up and arrange a drop
> shipment. Eddie Jensen at 805-543-4700.
>
> Be careful though, these are micro switches that sometimes come
> mis-aligned such that they might barely trip when installed and then not
> quite trip later on. Exercise the switch and observe the throw to ensure it
> is positive.
>
> Good luck.
>
> William
>
> On Wed, Jul 26, 2023 at 3:26 PM Mick Abraham via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with
>> easy manual selection between "A" or "B". The output from the manual switch
>> would feed AC into a set of XW Pro inverter/chargers.
>>
>> I seek a 200a manual xfer switch that can also changeover the 12v+
>> generator automation wire with the same handle. Schneider DTU324N is 3
>> phase (solid neutral) so that does get me a third blade but since the
>> trigger wire is only a few amps this p/n seems like overkill on size/weight
>> and on cost.
>>
>> The manual switch unit doesn't need to make or break live power because
>> folks always tend to shut down any nearby noisy engine before they do any
>> switching. We also don't need 100k short circuit current rating because the
>> machines can't fault as big as grid power can. Non-fusible seems best b/c
>> each genset will have a 200a main breaker. I'd prefer to buy the switch
>> inside a NEMA1 enclosure rather than getting a bare switch that would
>> require me to mount it into a housing. The project won't be code
>> inspected, so thanks in advance for any suggestions.
>>
>> The Wrench List is the Bomb!
>>
>> Mick Abraham, Proprietor
>> www.abrahamsolar.com
>>
>> Landline: 970-731-4675
>> Cell phone or for text messaging: 970-946-6584
>> ᐧ
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>> --
>
> William Miller
> Miller Solar.com
> 805-438-5600
> www.millersolar.com
> _______________________________________________
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-- 

Michael Morningstar


Morningstar Electric

PO Box 1494

Mount Shasta, CA 96067

530-921-0560

mjmorningstar at gmail.com
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