Omron H3YN-21 AC100-120 Solid-State Timer Relay

The Omron H3YN-21 AC100-120 Solid-State Timer Relay is a compact, solid-state timer relay for industrial control and automation systems that provides multi-range adjustable timing for time-delay switching and sequence control. It operates on 100–120 VAC and uses a DPDT (2 Form C) contact configuration, with an 8-pin plug-in socket for easy panel mounting. This timer is commonly used in control panels, packaging machinery, conveyor systems, and other manufacturing equipment requiring precise ON-delay or interval timing. Its plug-in form factor suits factory automation cabinets and OEM machinery, enabling straightforward replacement or expansion of timing functions. In factory settings, the H3YN-21 supports machine sequencing and motor control circuits where adjustable timing is critical. Common replacements include the Omron H3CR-A8 Timer Relay and Schneider Electric RE17 for similar timing needs.