Omron DIN Rail Timer Relay, 4-Contact, ON Delay, 2 - 60 s, 100 - 120V AC, 125V DC, 5A, 4PDT, IP40, H3Y-4 100-120VAC 60S

The Omron H3Y-4 100-120VAC 60S Timer Relay is a DIN rail and panel mount automation timer designed to provide precise ON delay control for industrial and commercial applications. With a timing range adjustable from 2 to 60 seconds, it is engineered to facilitate timing functions in automation systems, manufacturing processes, lighting, and HVAC control panels.

This timer relay integrates four contacts in a 4PDT (Four Pole Double Throw) arrangement, enabling it to control multiple circuit branches simultaneously. Its plug-in design streamlines installation and maintenance, fitting into standard DIN rail sockets or panels with ease. The device features a large transparent adjustment knob for convenient and accurate time setting, supporting tool-free operation with the option of a flat-blade or Phillips screwdriver for more precision.

The relay is compatible with both AC and DC supply voltages, specifically 100 - 120V AC and 125V DC, enhancing its versatility across various power systems. It is constructed to handle a contact switching voltage up to 250V AC and resistive load currents up to 5A, making it well-suited for tasks such as delay timing in machinery, lighting automation, sequence operations, and control in HVAC and process systems.

An IP40 enclosure protects the electronics from ingress of solid foreign particles, supporting reliable operation in panel environments. The relay operates within a temperature range of -10°C to +50°C and a humidity range of 35% to 85%, ensuring durability and stability even in challenging industrial environments. Robust compliance with international safety and EMC standards, including CE and UL certifications, adds to its suitability for use in regulated industrial applications.

Built-in LED indicators provide at-a-glance status monitoring of both power and output states, facilitating rapid diagnostics in service and installation. For optimal performance and safety, maintain at least 5mm spacing from adjacent units to ensure proper heat dissipation, and avoid exposure to excessive dust or corrosive atmospheres.

Typical applications include machinery timing control, process sequencing, lighting automation, and HVAC system management. The relay’s flexibility and reliability make it popular in panel building, manufacturing automation, and other sectors requiring repeatable, precise timing tasks.

For those seeking to explore more options in Timer Relays or additional Omron automation solutions, refer to the relevant industrial controls selection at EnvMart.