The Omron H5S-YB4D-X is a programmable multi-function time delay relay from the H5S series, offering a delay range from 1 minute up to 1 year via up/down digit keys. It switches four independent SPST-NO (1 Form A) circuits, each rated at 3 A at 250 VAC, making it suitable for sequencing or interval timing in control panels where a single timer governs multiple loads.
The 1-minute to 1-year delay range covers applications from short-cycle process timing to long-duration maintenance reminders or seasonal HVAC scheduling — the up/down digit key adjustment makes field reconfiguration straightforward without DIP switches. The 3 A at 250 VAC contact rating per channel handles pilot-duty loads like contactor coils, signal lamps, and small solenoid valves; for higher inrush loads, verify the make/break capacity against your specific device. Operating on 24 VDC supply, it integrates directly into standard DC control buses common in industrial panels and building automation systems.
Panel mount with screw terminals — installs into a standard panel cutout and wires directly to the control circuit without a socket.
Listed as active in production.