The Crydom SSRs mentioned are available at eg Digikey
>From about $30US up for 10A or more rating.
1.6V peav voltage drop at rated current.

http://www.digikey.com/product-search/en/relays/solid-state-relays/1048664?=
FV=3Dfff40010%2Cfff80058%2C6c80053%2C6c80054%2C6c80055%2C6c80056%2C6c80057%=
2C6c80058%2C6c8005a%2C6c8005b%2C6c8005c%2C6c8008d%2C6c8008e&mnonly=3D0&newp=
roducts=3D0&ColumnSort=3D1000011&page=3D1&stock=3D0&pbfree=3D0&rohs=3D0&k=
=3Dcrydom&quantity=3D&ptm=3D0&fid=3D0&pageSize=3D500&pkeyword=3Dcrydom

_____________________

Their DIN rail versions (from about $US55/1) need no external heatsinking
(some or all?)

http://www.digikey.com/product-search/en/relays/solid-state-relays/1048664?=
FV=3D6c80053%2C6c80054%2C6c80055%2C6c80056%2C6c80057%2C6c80058%2C6c8005a%2C=
6c8005b%2C6c8005c%2C6c8008d%2C6c8008e%2Cfff40010%2Cfff80058%2C11400b2&mnonl=
y=3D0&newproducts=3D0&ColumnSort=3D1000011&page=3D1&stock=3D0&pbfree=3D0&ro=
hs=3D0&k=3Dcrydom&quantity=3D&ptm=3D0&fid=3D0&pageSize=3D500&pkeyword=3Dcry=
dom


___________________
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.