The Omron H3Y Series consists of miniature, solid-state "On-Delay" timers. They are widely used in industrial automation for their compact size and compatibility with the standard MY-series relay sockets.

The primary difference between the H3Y-2 and H3Y-4 is the number of poles and the contact current rating.

General Specifications

• Operating Mode: ON-delay (timer starts when power is applied; contacts switch after the set time).

• Time Ranges: These are fixed-range timers. Common setups include:

  • Seconds: 1s, 5s, 10s, 30s, 60s.

  • Minutes: 1m, 3m, 5m, 10m, 30m, 60m.

• Voltage Options: Available in 12VDC, 24VDC, 110VAC, and 220-240VAC.

• Repeat Accuracy: ±1%FS max (High precision for consistent industrial cycles).

• Reset Time: 0.1 seconds maximum (Fast reset for high-speed machinery).

• Indicators: * Green LED: Power is ON.

  • Orange LED: Time is UP (Output relay is energized).

Key Benefits

• Ultra-Compact: Fits into tight control panels where space is a premium.

• Large Setting Dial: Features a transparent knob for easy manual adjustment using a screwdriver.

• Standard Mounting: Plugs directly into standard MY-style relay sockets, making replacements quick and tool-free.

• Durability: Mechanical life expectancy of over 10 million operations.

Wiring Tip

• For H3Y-2 (8-pin): Pins 13 and 14 are typically the coil power. Pins 9 & 12 are common, with 1 & 4 being Normally Closed (NC) and 5 & 8 being Normally Open (NO).

• For H3Y-4 (14-pin): Pins 13 and 14 are coil power. It provides four separate sets of switchable contacts for controlling multiple circuits simultaneously.