The breakers are not the issue. It is the load applied when repeatedly switching of the lighting load. It is correct that most breakers are suitable for switching, but like any switch, will eventually fail.
I have found that switching on a lighting contactor is the best way to go. If you use just a switch, you will be replacing them as you are the breakers. same service call different device.
Just use a good quality snap switch and have it close the contactor.

Last edited by JValdes; 12/09/07 01:05 PM.