The Omron H3Y-2 DC24 3H is a socketable, mechanical time delay relay from the H3Y series, switching DPDT (2 Form C) contacts rated at 5A at 250VAC. It covers an adjustable delay range from 0.1 hours up to 3 hours, set via a hand dial on the top, and initiates timing on application of the 24VDC supply voltage.
The 5A at 250VAC contact rating covers most pilot-duty and small solenoid loads inside a panel; it will handle a contactor coil or an indicator lamp, but not a motor directly. The 24VDC coil is standard for 24V control systems; verify your supply stays within the rated operating range — the datasheet's hold/dropout voltages matter for reliable pick-up.