On 1/3/17 12:26, Ken Hohhof wrote:
Why can it not be an electromechanical relay, maybe a latching type? http://www.johnsonelectric.com/en/features/residential-electricity-meter-disconnect-relay
I would expect at 200 amps either a contactor or SCR because of the risk of contact welding, unless they normally only switch it with minimal or no load. Or maybe that's why they catch on fire.
~Seth
