SSRs for AC normally have a triac for switching which is a bidirectional SCR. In any event, it has pretty low on resistance but you still have to heat sink them for any decent amount of current. Perhaps the smart meter has a way to get the heat out of the switch. I would think it would not be electromechanical due to the physical size that would be required for 200 amps.
From: Bill Prince Sent: Tuesday, January 03, 2017 1:11 PM To: af@afmug.com Subject: Re: [AFMUG] Smartmeter Security question SSRs (Solid State Relays). These can be pretty robust in my experience. On Tuesday, January 3, 2017 12:09 PM, Seth Mattinen <se...@rollernet.us> wrote: On 1/3/17 11:12, Nate Burke wrote: > I just happened to be at a property today where they were install a new > smartmeter. The Tech confirmed that they do have the ability to cut to > the power to the house from the meter. Must have SCRs in it then. ~Seth
