RE: [TCML] using an AC breaker for DC

["Dave Halliday" <dh@xxxxxxxxxxxxxx>]

SolarSeller has 75A 125VDC breakers for sale for $24

http://www.solarseller.com/dc_circuit_breakers__dc_circuit_breaker_ul_listed
_to_125_volts_dc.htm


Bad website (really cluttered), good people.

Dave 

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx 
> [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Nick Andrews
> Sent: Tuesday, September 09, 2008 10:09 AM
> To: tesla@xxxxxxxxxx
> Subject: [TCML] using an AC breaker for DC
> 
> Okay, so this is marginally on topic, as it also applies to 
> power cabinets for coils, etc.  The question is, can you 
> safely use 125VAC-rated breakers on a DC circuit for 72VDC in 
> a solar power application as a battery disconnect?  I told my 
> brother that it was harder for a DC arc to extinguish, but 
> that I thought they would be okay as a disconnect.  But I 
> wanted the opinion of the power engineers here, so thanks for 
> any input...
> 
> Nick A
> 
> 
> 
> 
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