Timer Relays

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Timer Relays are a type of Control Relay with a time delay built in.


Timer Relay or Electromechanical Relay?


The difference between the timer relay and electromechanical relay is that when the output contacts open or close. On a conventional Control Relay, the contacts are opened or closed when a voltage is applied and removed from the coil - for timer relays, however, the contacts will open or close before or after an intentional time period. When choosing the right Timer Relay it is important to consider the right kind of delay required for your application.


What are the types of Timer Relays that I can choose from?


The most common timing function of Time Delay Relay are:


  • On Delay (Time delay starts on the application of voltage)

  • Off Delay (When a voltage is applied the relay is ready to accept a trigger)

  • Single Shot (One-shot)

  • Interval On (Interval) and Flasher (On First / Off First)

  • Repeat Cycle (When a voltage is applied the relay contacts change state and the timer starts)

When designing your application it is important to understand the difference between the particular types of the timer relays. That means to consider what should initiate the delay and whether the timing should start at the same time as the application as well as when the voltage is released.


Timer Relays are triggered/initiated by either:


  • Voltage being applied or

  • The closing or opening of a trigger signal

Trigger signals are either:


  • Control Switch ( Dry Contact) such as a limit switch, float switch or push button or

  • Voltage ( Power Trigger)

Where can I use Timer Relay?


Time Delay Relays are typically used in industrial applications and OEM equipment play an important role for many industrial processes such as small panel or sub-panels requirements.


  • Lighting circuits

  • Motor start control

  • Sensitive equipment

  • Safety control

  • Conveyor belt sequence delay
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Description Price Supply Voltage Time Range Mode of Operation Mounting Type Number of Timer Functions Number of Contacts Series Time Increment Power Supply Contact Configuration Current Maximum Terminal Type Minimum Voltage Maximum Voltage
RS庫存編號 877-8076
製造零件編號2866174
HK$1,215.65
單位
- 50 ms → 100h - DIN Rail Single 2 ETD-SL-2T-I Hours, Milliseconds External DPDT - Screw 24V dc 240V dc
RS庫存編號 470-787
製造零件編號2866161
HK$1,285.56
單位
24 → 240V ac/dc 50 ms → 100h - DIN Rail Multi Function 2 ETD-SL-1T-DTF Hours, Milliseconds External - 5A Screw - 250V
RS庫存編號 877-8120
製造零件編號2901491
HK$519.95
單位
- 0.3 → 30min - DIN Rail Single 2 - Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8127
製造零件編號2901490
HK$439.00
單位
- 3 → 300s - DIN Rail Single 2 ETD-BL Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8118
製造零件編號2901489
HK$642.23
單位
- 0.1 → 10s - DIN Rail Single 2 ETD-BL Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8102
製造零件編號2901486
HK$781.15
單位
- 3 → 300s - DIN Rail Single 2 ETD-BL-1T-OFF-CC-300S-PT Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8098
製造零件編號2901480
HK$625.17
單位
- 0.1 → 10s - DIN Rail Single 2 ETD-BL-1T-ON-CC- 10S-PT Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 684-3682
製造零件編號2917467
HK$781.15
單位
19.2 → 30V dc 0.3 → 30min - DIN Rail Single 1 ETD-BL-1T-OFF-CC- 30MIN Minutes External - 6.3A Screw - -
RS庫存編號 684-3660
製造零件編號2917418
HK$379.39
單位
19.2 → 30V dc 0.1 → 10s - DIN Rail Single 1 ETD-BL-1T-ON-CC- 10S Seconds External - 6.3A Spring Clamp - -
RS庫存編號 877-8085
製造零件編號2901478
HK$520.44
單位
- 0.3 → 30min - DIN Rail Single 2 ETD-BL-1T-ON- 30MIN-PT Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8089
製造零件編號2901479
HK$439.00
單位
- 3 → 300min - DIN Rail Single 2 ETD-BL-1T-ON-300MIN-PT Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 684-3689
製造零件編號2917463
HK$743.95
單位
19.2 → 30V dc 3 → 300s - DIN Rail Single 1 ETD-BL-1T-OFF-CC-300S Seconds External - 6.3A Screw - -
RS庫存編號 877-8082
製造零件編號2901477
HK$656.43
單位
- 3 → 300s - DIN Rail Single 2 ETD-BL-1T-ON-300S-PT Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8124
製造零件編號2901492
HK$642.23
單位
- 0.1 → 10 s, 3 → 300min - DIN Rail Single 2 ETD-BL Minutes, Seconds External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 684-3698
製造零件編號2917502
HK$644.04
單位
19.2 → 30V dc 3 → 300s - DIN Rail Single 1 ETD-BL-1T-F-300S Seconds External - 6.3A Screw - -
RS庫存編號 877-8095
製造零件編號2901483
HK$611.65
單位
- 0.3 → 30min - DIN Rail Single 2 ETD-BL-1T-ON-CC- 30MIN-PT Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8136
製造零件編號2905814
HK$524.57
單位
- 50 ms → 1h - DIN Rail Multi Function 2 ETD-BL-1T-230-PT Hours, Milliseconds External SPDT - Screw 24V ac/dc 240V ac/dc
RS庫存編號 877-8105
製造零件編號2901484
HK$642.23
單位
- 3 → 300min - DIN Rail Single 2 ETD-BL-1T-ON-CC-300MIN-PT Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8114
製造零件編號2901488
HK$611.65
單位
- 3 → 300min - DIN Rail Single 2 ETD-BL-1T-OFF-CC-300MIN-PT Minutes External SPDT - Screw 19.2V dc 30V dc
RS庫存編號 877-8091
製造零件編號2901481
HK$642.23
單位
- 3 → 300s - DIN Rail Single 2 ETD-BL-1T-ON-CC-300S-PT Seconds External SPDT - Screw 19.2V dc 30V dc