600 VDC switches [RE-wrenches]

[Jeff Clearwater]

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Hi Travis,

I used a Cutler Hammer 250VDC rated disconnect on my last job.  It 
was only a 48 volt off-grid system but when I saw the 250 VDC rating 
and the price was only $52 I also thought it warranted more research 
for my next SB job.  Home Depot sells them!  (not that I like to 
support them).

Please let us know what you find out!

Jeff C.


>What can anyone tell me about the Cutler Hammer DH361URK for use with Sunny
>Boy's?  It's a non-fused 3 pole 600 volt 30 amp Nema 3R safety switch.  My
>local supplier sold it to me as a 600 VDC rated switch but the inside cover
>says 250 volts.  I've asked him to contact CH about the DC rating if you
>were to wire the three poles in series but have yet to hear back from them.
>My application will have a Vmp of less than 300 volts and a Ocv of less than
>400.  Is it safe to assume that wiring the 3 poles in series will increase
>the DC rating of any non fusible switch that starts out with a DC rating of
>250?
>
>
>Thanks
>Travis Creswell
>Ozark Energy Services
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jeff Clearwater
Ecovillage Design Associates - Whole Systems Design
Community and Village Scale Renewable Energy & Water Systems

Cell: 720-480-8455
Office:  800-440-2523 (PIN-7071)
Fax:  720-528-7813
jeffc at ic.org

2525 Arapahoe Ave.
Boulder, CO 80302

PO Box 2255
Redway, CA 95560

Council Member - Ecovillage Network of the Americas - http://www.ecovillage.org
Advisory Board - Living Routes - Ecovillage Education - 
http://www.livingroutes.org
Founder:  Ecovillage Research, Development, and Demonstration Program:
http://www.home.earthlink.net/~clrwater/RDD/rdd.html
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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