The Omron H3Y-4 AC100-120 60S is a socket-mount time delay relay from the H3Y series, offering both off-delay and on-delay functions with a hand-dial-adjustable timing range of 2 seconds to 60 seconds. It switches 4PDT (4 Form C) contacts rated at 3 A at 250 VAC, powered by a 100 ~ 120 VAC supply. The plug-in termination style mates with standard 8- or 11-pin octal sockets, so panel replacement is a straight pull-and-swap — no re-wiring needed.
The 4PDT contact arrangement gives you four independent Form C (changeover) poles, which is useful for controlling multiple loads or interlocks from a single timer — common in conveyor sequencing, motor start/stop delays, or HVAC staging. The 3 A at 250 VAC contact rating covers pilot-duty and small relay/contactor coils; it will not drive a motor directly, but it will switch a contactor coil or a small solenoid valve. Timing initiation is by input voltage, meaning the delay cycle starts as soon as supply is applied (on-delay) or removed (off-delay), depending on the function selected. The hand-dial adjustment lets you set the delay on-site without tools — useful for commissioning tweaks.