AC 220V Delay Timer Relay Module – 10A Adjustable Time Delay

The AC 220V Delay Timer Relay Module is an adjustable timing controller designed to switch a connected load ON after a preset delay following application of power.

Once 220V AC power is applied, the module begins counting the selected delay period. At the end of the delay, the relay activates and remains energized while power is maintained.

Available timing versions include ranges from 0–10 seconds up to 0–10 hours, making the module suitable for delayed equipment startup, sequential control, lighting, pumps, fans, automation systems, and other timed switching applications.

Technical Specifications

• Module Type: Delay-On Timer Relay
• Input / Operating Voltage: 220V AC
• Relay Contact Rating: Up to 10A at 250V AC
• DC Contact Rating: Up to 10A at 30V DC
• Timing Function: Power-On Delay
• Available Time Ranges: 0–10 Seconds / 0–10 Minutes / 0–100 Minutes / 0–10 Hours
• Minimum Adjustment: Approximately 1% of Selected Full-Scale Range
• Time Delay Error: Approximately ±2% as specified
• Standby Power Consumption: Approx. 0.8W
• Module Dimensions: Approx. 58 × 43 × 20mm
• Dimensions in Inches: Approx. 2.28 × 1.69 × 0.78in
• Output Type: Electromechanical Relay

Operating Sequence

The module operates according to the following sequence:

Power ON → Timing Begins → Preset Delay Expires → Relay ON → Relay Remains ON

When 220V AC power is first applied, the relay does not immediately activate. Instead, the module starts the preset timing period.

Once the selected delay has elapsed, the relay switches ON and remains activated while the module continues to receive power.

Removing power resets the timing cycle. When power is applied again, a new delay cycle begins.

Available Timing Ranges

Different timing-range versions are specified:

0–10 Seconds
0–10 Minutes
0–100 Minutes
0–10 Hours

The minimum practical adjustment is approximately 1% of the selected full-scale timing range.

For example, on the 0–100 minute version, the minimum adjustment is approximately 1 minute. On the 0–10 hour version, 1% corresponds to approximately 0.1 hour or 6 minutes.

Applications

Ideal for delayed equipment startup, sequential power control, lighting systems, pumps, fans, motors through suitable contactors, industrial automation, control panels, ventilation systems, alarm circuits, machinery control, and DIY timing applications.

The delay-on function is particularly useful when equipment should not start immediately after power is applied.

Important Note

The specified 0–10 seconds, 0–10 minutes, 0–100 minutes, and 0–10 hours appear to represent different optional module versions. Confirm the timing range of the selected module before ordering rather than assuming all four ranges are available on a single board.

The 10A relay rating is a maximum contact rating under specified conditions. Inductive loads such as motors, pumps, transformers, and solenoids can produce high startup and switching currents, so an appropriately rated contactor or external switching device may be required.

Safety Warning

This module operates directly from 220V AC mains voltage. Potentially lethal voltage is present on the PCB and terminals while powered.

Install the module inside a suitable insulated enclosure and use correctly rated wiring, terminals, fuses, circuit protection, and electrical clearances.

Always disconnect mains power before installation or adjustment. Installation of mains-voltage equipment should be performed by a suitably qualified person.

Package Includes

1 × AC 220V Adjustable Delay Timer Relay Module