1-120 s off-delay window
The H3DK-HBL AC/DC24-48 is an off-delay timer in Omron's H3DK-H series — the timing sequence starts on input voltage removal and runs down through the 1 s to 120 s adjustment range. The screwdriver-slot adjustment on the front face sets the interval without pulling the unit off the DIN rail. The SPDT (1 Form C) contact carries 5 A at 250 VAC, which covers standard coil and indicator switching on a control panel — for heavier inductive loads the user-side suppression or a higher-rated contactor picks up the actual motor switching duty.
24-48 VAC/DC supply, panel-friendly footprint
Supply is 24 to 48 VAC/DC on a single pair, which lets the same timer drop into either a 24 VDC control rail or a 48 VAC auxiliary without a different order code. Screw terminals take the field wiring directly, and the DIN rail housing clicks onto a standard 35 mm rail inside a panel enclosure. Timing initiates from input voltage, so the off-delay starts the moment power is removed — typical for fan-run-on, post-purge, or sequential-stop logic where downstream equipment must complete a cycle after the start command drops.
Active status, quoted against the BOM
For panel builds and MRO spares, this is the kind of timer that stays in the BOM without a forced re-spec.