The Omron H3Y-2 DC24 120S is a miniature time delay relay from the H3Y series, offering both Off-Delay and On-Delay functions. It switches a DPDT (2 Form C) contact set rated for 5 A at 250 VAC, powered by a 24 VDC supply. The delay is adjustable via a front-panel hand dial from 5 seconds to 120 seconds, making it a straightforward fit for control panels requiring a socketable, plug-in timer.
The 5 A at 250 VAC contact rating (resistive load) governs the switching capacity — sufficient for pilot lights, contactor coils, solenoid valves, or small relays in a control panel. The 24 VDC coil is the standard control voltage for many PLC outputs and industrial DC supplies; verify your supply stays within the rated operating voltage range. The DPDT (2 Form C) output gives one normally-open and one normally-closed set per pole, allowing both a timed-on and timed-off signal from a single device.