The MP240D4 is a DC-controlled MP Series relay that switches 240 VAC at up to 4 A.
MP Series power relays are designed for OEMs. They offer a minimum footprint to allow maximum relay density on a printed circuit board.
Lots of information on choosing and using SSRs can be found in the SSR data sheet. Also see the Manufacturers' part number cross-reference list.
This SSR carries a lifetime warranty.