Solid State Switching

Thread Starter

Jsw123

Joined Jun 20, 2009
43
What is the difference between a solid state relay and a semiconductor contactor?
Can both switch ac loads? This a link to a company that distinguishes between the two.

http://library.abb.com/global/scot/scot209.nsf/veritydisplay/da7ec357f6a7461cc12573ad004e1e83/$File/2CDC110004C0205_07.pdf
 

mik3

Joined Feb 4, 2008
4,846
If they are designed to switch AC loads then they can do it. Solid state relays use transistors and thyristors (TRIACs) to make the switching whereas contact relays use moving contacts.
 
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