[ausev] switching the mainline power

[Mark Farver]

Erik Bigelow wrote:
> Check these out:
>
> http://www.evparts.com/shopping/index.php?id=679
>
> Key switched and sized for the right number of amps. The voltage
> rating is a little below what you're looking at, but if you're not
> expecting to use the switch to break that current, there should be no
> problems at 48V.
>   
Nearly any automotive battery disconnect or ignition switch will 
probably do just fine in this application.  Automotive switches are 
usually rated to break about 32V, and ignition switches are usually 
designed to carry 60amps or so.  In your case if it will _never_ break 
under load using a switch with a lower voltage rating will be ok.

OTOH I think in this case I would be tempted to use a switch that can 
break the full pack voltage and current, since it is the switch most 
accessible to the rider in case of a runaway controller failure.  The 
breaker will not necessarily open if the controller fails full on.  You 
could use a lower amperage switch and a small contactor instead.

Mark Farver