Your understanding and mine or the same. Perhaps Jeff Blamey was thinking of AC versus DC ratings. I have one of these circuit breakers in my truck and expect it to be able to break full pack current at full voltage (80 volts of BB600 Nicads). Of course, I also have a fuse and a main contactor which should be up to the task as well and retained my clutch for a physical disconnect. damon
Date: Tue, 18 Mar 2008 23:58:32 -0600From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Re: [ElectricMotorcycles] eBay: Airpax 150 Amp 80 Volt DC Circuit Breaker (old discussion revived)I noticed these are still up. I also reviewed some of this discussion, to try and understand the potential safety issue of using a circuit breaker.Jeff Blamey: Don't mistake a DC breaker for a DC disconnect. A DC disconnect has a positive break capability up to the rated capacity. What's the use of a breaker if it doesn't have a positive break capability? Isn't that it's purpose to begin with? Jeff Blamey: A dc disconnect is a positive shut-off with contacts meant to make/break large current, a breaker could become stuck (or unreliable as a shut-off) and with the current these batteries hold, watch out! Isn't that the reason for an arc interrupt current (AIC) rating? I checked the original breaker this discussion was about, ebay item: 290058376726, and it's rated at 10,000. Does this mean it can break 10,000 amps, or am I missing something?Regards,Andrew On Sat, Mar 24, 2007 at 6:42 PM, Mike <[EMAIL PROTECTED]> wrote: I was poking around eBay, waiting for the spray paint to dry on someebike parts, and found this: Airpax 150 Amp 80 Volt DC CircuitBreaker with a buy it now for $5. Item number: 290058376726# DC Circuit Breaker# Maximum Voltage 80 Volts DC# Rated Amperage 150 Amps# Trip Amps 180# Delay 52# Auxiliary Switch N.O/N.C. 10 Amp 250 Volt AC# Panel Mount# Approximate Dimensions 1-1/2" Wide x 2-1/2" Long x 3-14" High# New SurplusDunno if anyone is interested or not but I thought I'd run it up the flag pole.--The Electric Motorcycle Portalhttp://www.electricmotorcycles.net/Electric Motorcycle Listservhttp://www.electricmotorcycles.net/listserv _________________________________________________________________ Climb to the top of the charts! Play the word scramble challenge with star power. http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_jan
