The HK1654 time relay is a ready-to-use enclosed device designed to control electrical loads with an adjustable operating time. The device operates in Delay OFF mode.
When power is applied, the relay switches ON immediately and the preset time starts counting. After the time expires, the relay switches OFF and remains OFF until the power supply is removed. Each power-up restarts the timing cycle.
The operating time is smoothly adjustable from 1 to 30 units using a trimmer potentiometer. The time unit (seconds, minutes or hours) is selected via jumpers and must be set while the power is OFF.
The device features LED indicators for power supply and relay status. The timer is fully assembled and housed in a plastic enclosure, ready for immediate use.
Technical Specifications:
Operating principle: Delay OFF time relay.
Operating time: 1 - 30 seconds, minutes or hours.
Time range selection:
- W1 closed, W2 closed - seconds,
- W1 closed, W2 open - minutes,
- W1 open, W2 closed - hours.
Time adjustment: trimmer potentiometer.
Indication:
- power LED,
- relay ON LED.
Dimensions:
- PCB: 49 x 29 mm.
Enclosure: 55 x 35 x 20 mm.
Relay output:
- Normally Open contact (NO),
- Common contact (COM),
- Normally Closed contact (NC).
Relay ratings:
- 15 A / 125 V DC,
- 15 A / 24 V DC or AC,
- 10 A / 250 V AC.
Supply voltage: 10 - 14 V DC.
Current consumption:
- relay OFF: 8 mA,
- relay ON: 48 mA.

This product is a boxed finished product.
It is also available as a fully assembled module (without box) - Product code 1604 (separate product).