Definition: a plug-in multi-function timer in the H3YN line
The H3YN-4-B AC200-230 is an Omron H3YN-series multi-function electronic timer in a 4PDT (4 Form C) contact arrangement, built around a mechanical relay that switches 3 A at 250 VAC across four independent poles. It is a discrete timing module, not a PLC: the time base is set on the dial, and the contacts open and close on their own once the run input is applied. The supply is 200–230 VAC, with timing initiated by the input voltage and the dial used to set the delay window from 0.1 s to 10 min. The housing is socketable and plugs into a standard 14-pin round-base timer socket, so the timer itself can be lifted out and replaced without disturbing the panel wiring.
Where the 0.1 s–10 min window and 4PDT contacts fit
The 0.1 s to 10 min timing range covers the typical process-duty intervals a panel builder needs from a single multi-function unit — short-cycle machine sequencing, conveyor dwell, lubrication pulse, or a longer start-up delay — without having to stock several specialty timers. Because timing is initiated by the input voltage, the same module can be wired for on-delay, interval, or other operating modes by reconfiguring the external connections, which is the practical meaning of the multi-function label for the buyer. Four Form C contacts on one mechanical relay give the wiring enough poles to run two independent loads off the same timer — for example, a motor contactor coil and a status indicator — or to drive a selector logic block, which is the main reason a 4PDT is picked over a DPDT in this class. The 3 A at 250 VAC rating is the per-contact ceiling and is the figure that decides whether the timer is driving a contactor coil directly or only an interposing relay.
Panel fit: 200–230 VAC supply and 14-pin plug-in mount
The 200–230 VAC supply matches the standard European and Asian control-panel feeder, so the H3YN-4-B AC200-230 drops into a 230 VAC control circuit without a step-down transformer. The socketable, plug-in termination means the panel builder lands wiring on the base socket once and can swap the timer body for a replacement or a different H3YN variant in the same family without re-stripping conductors.