What the H3CR-FN does in the panel
The H3CR-FN AC100-240/DC100-125 is an Omron H3CR-F series electronic timer built around a mechanical DPDT relay (2 Form C) with a repeat-cycle / twin-timer function, accepting 100–240 VAC or 100–125 VDC on the supply terminals and switching 5 A at 250 VAC on the output contacts — the spec a panel builder sizes against when the load is a contactor coil, solenoid, or indicator lamp fed from the timed contacts. Delay range is 0.05 s to 30 h, set by the hand dial on the face, with timing initiated by the input voltage — the wide span covers everything from a short off-delay on a conveyor latch to a multi-hour process interval, so one socket position handles both sequencing and long-period duty without re-specifying the timer.
Socket, pins, and panel fit
It is socketable on an 11-pin octal base — the same round-pin footprint used across the H3CR family, so a swap into an existing panel does not change the wiring or the cutout, only the dial setting on the front.