600 VDC switches [RE-wrenches]

Ron Schroeder ron at 112motors.com
Fri Oct 11 09:27:45 PDT 2002


Hi William,

Are you refering to Square D QO and QOU breakers at 45VDC?  I though 
that they were 48VDC.

My real question is: Is the 48VDC the maximum ABSOLUTE voltage or the 
maximum NOMINAL voltage.  e.g. UL rated 120VAC breakers can be used on 
120VAC NOMINAL which often can be up to 132VAC.

Thanks

Ron


William Miller wrote:
> Matt:
> 
> I believe you missed the thread some months ago (or maybe a year or so?) 
> in
> which I shared some research on Square D breakers.  They are UL rated 
> for
> 45 VDC and factory certified for 125VDC.
<snip>

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