What lands in the panel when this timer arrives
The Omron H3Y-2 DC24 5S is a plug-in, socketable timer in the H3Y series, built around a DPDT (2 Form C) mechanical relay that switches 5A at 250VAC on its output — the contact pair that decides whether the downstream contactor, solenoid valve, or indicator stage actually fires after the delay window. Timing is adjustable from 0.2 Sec to 5 Sec via a hand dial on the front face, initiated by the input voltage itself, so a single 24VDC control rail both powers the unit and starts the delay — common in control panels where a 24VDC logic supply is already present and a separate trigger wire would be wasted copper.
Off-delay vs on-delay in the same package
Function is listed as both off-delay and on-delay, which on the H3Y line is selected at the socket or terminal block rather than by internal strapping — useful where the same panel builder stock number covers either a drop-out delay (fan run-on) or a pick-up delay (sequenced start) without holding two SKUs. Termination is plug-in, so field replacement is a pull-and-swap from the 8-pin (or 11-pin, family-typical) socket without disturbing the wired loom — a serviceability point that matters when the timer lives in a densely packed relay row behind a wiring duct.
Procurement posture
Supply is quoted to order through independent industrial distribution, with availability and current unit pricing confirmed at RFQ against the BOM line; no channel exclusivity is implied and no stock count is asserted here.