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 144-5921
製造零件編號DRTH24A06
HK$539.13
單位
180 → 240 V ac/dc 0.1 s → 100 h Interval DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5935
製造零件編號DRTH24B06R
HK$549.91
單位
90 → 140 V ac/dc 0.1 s → 100 h Interval DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 90 V ac/dc 140 V ac/dc
RS庫存編號 144-5922
製造零件編號DRTL24A06R
HK$639.70
單位
180 → 240 V ac/dc 0.1 s → 100 h Repeat Cycle DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5931
製造零件編號DRTA24A06
HK$539.13
單位
180 → 240 V ac/dc 0.1 s → 100 h Delay on Make DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5919
製造零件編號DRTL06D06
HK$637.81
單位
12 → 24 V ac/dc 0.1 s → 100 h Repeat Cycle DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5929
製造零件編號DRTA24D06
HK$549.98
單位
12 → 24 V ac/dc 0.1 s → 100 h Delay on Make DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5917
製造零件編號DRTU06D06
HK$618.28
單位
12 → 24 V ac/dc 0.1 s → 100 h Multifunction DIN Rail Multi Function 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5936
製造零件編號DRTH24D06
HK$549.98
單位
12 → 24 V ac/dc 0.1 s → 100 h Interval DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5920
製造零件編號DRTA06D06
HK$567.33
單位
12 → 24 V ac/dc 0.1 s → 100 h Delay on Make DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5930
製造零件編號DRTU24A06R
HK$619.61
單位
180 → 240 V ac/dc 0.1 s → 100 h Multifunction DIN Rail Multi Function 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5918
製造零件編號DRTC06D06
HK$540.28
單位
12 → 24 V ac/dc 0.1 s → 100 h Delay on Break DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5923
製造零件編號DRTL24A06
HK$639.70
單位
180 → 240 V ac/dc 0.1 s → 100 h Repeat Cycle DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5932
製造零件編號DRTU24D06
HK$630.62
單位
12 → 24 V ac/dc 0.1 s → 100 h Multifunction DIN Rail Multi Function 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5934
製造零件編號DRTC24A06R
HK$539.13
單位
180 → 240 V ac/dc 0.1 s → 100 h Delay on Break DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5928
製造零件編號DRTB06D06
HK$540.28
單位
12 → 24 V ac/dc 0.1 s → 100 h Single Shot DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5925
製造零件編號DRTA24A06R
HK$539.05
單位
180 → 240 V ac/dc 0.1 s → 100 h Delay on Make DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5927
製造零件編號DRTL24D06
HK$620.22
單位
12 → 24 V ac/dc 0.1 s → 100 h Repeat Cycle DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5926
製造零件編號DRTU24A06
HK$619.61
單位
180 → 240 V ac/dc 0.1 s → 100 h Multifunction DIN Rail Multi Function 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 180 V ac/dc 240 V ac/dc
RS庫存編號 144-5924
製造零件編號DRTH06D06
HK$567.33
單位
12 → 24 V ac/dc 0.1 s → 100 h Interval DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS庫存編號 144-5933
製造零件編號DRTC24D06
HK$577.81
單位
12 → 24 V ac/dc 0.1 s → 100 h Delay on Break DIN Rail Single 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc