H3D1

H3D1 – Product Description

• The H3D1 is a multi-function analog electronic timer designed for industrial automation.

• Provides reliable timing control with multiple selectable modes (ON-delay, OFF-delay, Interval, Cyclic, etc. depending on variant).

• Features a large dial with pointer for easy and precise time setting.

• Compact, panel-mounted design with transparent protective cover for durability.

• Widely used in control panels, automation systems, and machinery requiring precise timed operations.

Key Specifications

• Function: Multi-function timer with selectable operating modes (ON-delay, OFF-delay, Interval, Cyclic).

• Supply Voltage: Wide operating range options available (commonly 24 V to 240 V AC and 24 V to 220 V DC).

• Time Range: Adjustable from 0.1 seconds to 60 hours depending on model and range selection.

• Output: 1 C/O (Change-over) relay contact, rated 5 A at 250 VAC / 28 VDC resistive load.

• Control Method: Large front dial with pointer for time setting, plus mode selector switches.

• Accuracy:

  • Setting accuracy: ±10% of full scale.

  • Repeat accuracy: ±1%.

• Indicators: LED indicators for power and operation status.

• Environmental Ratings:

  • Operating temperature: –10 °C to +55 °C.

  • Storage temperature: –25 °C to +80 °C.

  • Humidity: Up to 85–95% RH at 40 °C.

• Mechanical Life: ≥1 million operations (no load).

• Electrical Life: ≥100,000 operations at rated load.

• Mounting: Panel-mounted with front transparent cover for dust protection.

• Dimensions: Approx. 48 mm × 48 mm × 80 mm (standard analog timer size).

Applications

• Motor control with start or stop delays.

• Pumps, compressors, and fans requiring timed operation.

• Lighting and heating systems with automatic control.

• Sequential machinery operations in industrial automation.

• Cyclic operations in packaging, textile, or process equipment.

• Control panels, MCCs, and relay-based logic systems needing reliable timing functions.

Summary

• The H3D1 is a versatile multi-function timer with wide time ranges and selectable modes.

• Features a robust, panel-mounted design with a clear dial for easy adjustment.

• Offers reliable accuracy, long operational life, and flexibility for various industrial uses.

• Ideal for automation panels, machinery, and process industries where precise timing is critical.