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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Omschrijving Prijs 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-stocknr. 896-6810
FabrikantRS PRO
€ 27,48
Each
Aantal stuks
24 V ac/dc, 240 V ac 0.3 s → 30 h ON Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS-stocknr. 536-2779
FabrikantRS PRO
€ 33,81
Each
Aantal stuks
250 V ac 0 → 120 min - Panel Mount - - - - External - - - - -
RS-stocknr. 896-6813
FabrikantRS PRO
€ 34,72
Each
Aantal stuks
12 → 240 V ac/dc 0.1 s → 100 h Multi Function DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 6 A Screw 12 V ac/dc 240 V ac/dc
RS-stocknr. 536-2555
FabrikantRS PRO
€ 33,87
Each
Aantal stuks
- 0 → 30 min - Panel Mount - - - - External - - - - -
RS-stocknr. 896-6822
FabrikantRS PRO
€ 29,93
Each
Aantal stuks
24 V ac/dc, 240 V ac 0.3 s → 30 h OFF Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS-stocknr. 896-6860
FabrikantRS PRO
€ 51,69
Each
Aantal stuks
24 → 240 V ac/dc 01. s → 999 h Multi Function DIN Rail Multi Function 2 - Hours, Minutes, Seconds External DPNO 8 A - 24 V ac/dc 240 V ac/dc
RS-stocknr. 808-6620
FabrikantRS PRO
€ 69,53
Each
Aantal stuks
230 V ac - One Shot Panel Mount Single 1 - Minutes, Seconds External SPDT 50 mA - - 230 V ac
RS-stocknr. 896-6841
FabrikantRS PRO
€ 51,17
Each
Aantal stuks
24 → 240 V ac/dc 0.1 s → 120 days Multi Function DIN Rail Multi Function 1 - Seconds External SPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS-stocknr. 102-6123
FabrikantRS PRO
€ 35,72
Each
Aantal stuks
12 → 230 V ac/dc - - DIN Rail - - - - - DPDT - Screw - -
RS-stocknr. 896-6872
FabrikantRS PRO
€ 99,69
Each
Aantal stuks
110 → 240 V ac 01.s → 999 days Multi Function Panel Mount Multi Function 2 - Days, Hours, Minutes, Seconds External - 5 A PCB Pin 110 V ac 240 V ac
RS-stocknr. 102-6122
FabrikantRS PRO
€ 33,36
Each
Aantal stuks
12 → 230 V ac/dc - - DIN Rail Multi Function - - - - SPDT - Screw - -
RS-stocknr. 896-6838
FabrikantRS PRO
€ 35,82
Each
Aantal stuks
240 V ac 3 → 120 s Star Delta DIN Rail Single 2 - Seconds External SPNO 5 A Screw - 24 V ac/dc, 240 V ac
RS-stocknr. 896-6816
FabrikantRS PRO
€ 28,43
Each
Aantal stuks
24 V ac/dc, 110 V ac 0.3 s → 30 h ON Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 110 V ac
RS-stocknr. 798-3444
FabrikantRS PRO
€ 42,10
Each
Aantal stuks
230 V ac - Interval Clamp Single 1 - Hours, Minutes, Seconds External NC, SPNO - - - 230 V ac
RS-stocknr. 798-3448
FabrikantRS PRO
€ 62,40
Each
Aantal stuks
10 → 30 V dc - Interval Clamp Single 1 - Hours, Minutes, Seconds External NC, SPNO - - 10 V dc 30 V dc
RS-stocknr. 896-6826
FabrikantRS PRO
€ 43,07
Each
Aantal stuks
12 → 240 V ac/dc 0.1 s → 100 h Asymmetric OFF/ON, Asymmetric ON/OFF DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Screw 12 V ac/dc 240 V ac/dc
RS-stocknr. 896-6879
FabrikantRS PRO
€ 99,21
Each
Aantal stuks
110 → 240 V ac 0.1 s → 999 Days Multi Function Panel Mount Multi Function 2 - Days, Hours, Minutes, Seconds External DPDT 5 A PCB Pin 110 V ac 240 V ac
RS-stocknr. 896-6848
FabrikantRS PRO
€ 47,28
Each
Aantal stuks
24 → 240 V ac/dc 0.1 s → 10 h ON Delay DIN Rail Multi Function 2 - Seconds External DPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS-stocknr. 179-2957
FabrikantRS PRO
€ 35,03
Each
Aantal stuks
230 V ac 0.1 → 1 s On-Delay Plug In Single 4 - - - 4PDT 3 A - - 230 V ac
RS-stocknr. 179-2950
FabrikantRS PRO
€ 32,90
Each
Aantal stuks
24 V dc 1 → 30 s On-Delay Plug In Single 2 - - - DPDT 5 A - - 24 V dc