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-FSB3GZ12 High Performance Timing Relay, Off Delay .05min to 10min **FUNCTIONAL REPLACEMENT-ENGINEERING REQUIRED to 700-FEM6TZ12**