The Omron H3Y-4 DC24 60S is a mechanical time delay relay from the H3Y series, offering a 4PDT (4 Form C) contact arrangement. It operates on a 24 VDC supply and provides an adjustable delay range from 2 seconds to 60 seconds, configurable for either off-delay or on-delay timing functions via a hand dial. The 3 A at 250 VAC contact rating covers typical pilot duty and small load switching in control panels.
The 4PDT arrangement gives you four independent form-C (changeover) contacts, which means this single relay can switch four separate circuits — useful for sequencing multiple solenoid valves or signalling a PLC across different voltage domains. The 3 A at 250 VAC rating is resistive/pilot-duty level; it will handle contactors, small relays, and indicator loads, but not direct motor inrush. The 24 VDC coil is standard for industrial control supplies, and the socketable plug-in base (separate, not included) means a failed unit swaps in seconds without rewiring.
Deployment context
Socketable plug-in termination and the 4PDT form factor suit DIN-rail or panel-mount timer sockets. The hand-dial adjustment is accessible without removing the relay, which helps during commissioning when timing tweaks are frequent.