The 700-FS can be panel or DIN rail mounted. Allowing at least 5 mm of open space on each side of the 700-FS for proper ventilation, should result in best long term performance.
A-B Rockwell 700-FSD3KZ12 High Performance Timing Relay, One Shot .5hr to 10hr **FUNCTIONAL REPLACEMENT-BACKWARD COMPATIBLE to 700-FSY7UU23**