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 Stock No. 791-2711
Mfr. Part No.RE17RAMU
kr 203,29
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h ON Delay DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 914-5070
Mfr. Part No.RENF22R2MMW
kr 730,52
Each
Units
12 240 V ac/dc 0.1 s 100 h Multi Function with NFC DIN Rail Multi Function 2 Zelio Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 240 V ac/dc
RS Stock No. 791-2708
Mfr. Part No.RE17LAMW
kr 241,67
Each
Units
24 240 V ac/dc 0.1 s 100 h ON Delay DIN Rail Single - RE17 Hours, Minutes, Seconds - - 20 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 791-2714
Mfr. Part No.RE17LLBM
kr 318,49
Each
Units
24 240 V ac 0.1 s 100 h Asymmetrical DIN Rail Multi Function - RE17 Hours, Minutes, Seconds - - 0.7 A Screw 24 V ac 240 V ac
RS Stock No. 791-2739
Mfr. Part No.RE17RLMU
kr 357,48
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h Asymmetrical DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 791-2733
Mfr. Part No.RE17RMEMU
kr 305,12
Each
Units
24 240 V ac, 24 V dc 0.1 s 10 h - DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 791-2723
Mfr. Part No.RE17RCMU
kr 237,05
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h OFF Delay DIN Rail Single 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 914-8246
Mfr. Part No.RE48ATM12MW
kr 577,00
Each
Units
24 240 V ac/dc 0.02 s 300 h Power On Delay Panel Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A Plug In 24 V ac/dc 240 V ac/dc
RS Stock No. 872-5817
Mfr. Part No.RE22R2MMU
kr 600,47
Each
Units
24 240 V ac 0.1 s 100 h Multi Function DIN Rail Multi Function 4 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw - -
RS Stock No. 897-6728
Mfr. Part No.RE22R1MYMR
kr 678,72
Each
Units
24 240 V ac/dc 0.05 1 s, 0.3 3 s, 1 10 s, 3 30 h, 3 30 min, 3 30 s, 10 100 s, 30 300 h, 30 300 min, 30 300 s Dw Symmetrical with Retrigger/Restart Control Signal, Interval Delay, Interval Delay with Control Signal Off, Interval Delay with Control Signal Off and with Pause/Summation Control, Interval Delay with Pause/Summation Control Signal, Interval Delay with Retrigger/Restart Control Signal, Off Delay with Control Signal, Off Delay with Control Signal and with Pause/Summation, On Delay and Off Delay with Control Signal, Power On Delay, Power On Delay with Pause/Summation Control Signal, Power On Delay with Retrigger/Restart Control, Symmetrical, Symmetrical with Pause/Summation Control Signal DIN Rail Multi Function 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 897-6722
Mfr. Part No.RE22R1MLMR
kr 825,17
Each
Units
24 240 V ac/dc 0.05 1 s, 0.3 3 s, 1 10 s, 3 30 h, 3 30 min, 3 30 s, 10 100 s, 30 300 h, 30 300 min, 30 300 s Asymmetrical DIN Rail Single 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 791-2727
Mfr. Part No.RE17RHMU
kr 237,05
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h ON Pulse DIN Rail Multi Function 1 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 872-5805
Mfr. Part No.RE22R2AMU
kr 508,02
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h ON Delay DIN Rail Multi Function 4 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw - -
RS Stock No. 896-8676
Mfr. Part No.RE22R2AMR
kr 533,28
Each
Units
24 240 V ac/dc 0.05 1 s, 0.3 3 s, 1 10 s, 3 30 h, 3 30 min, 3 30 s, 10 100 s, 30 300 h, 30 300 min, 30 300 s ON Delay DIN Rail Single 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 897-6731
Mfr. Part No.RE22R2QTMR
kr 817,00
Each
Units
24 240 V ac/dc 0.05 1 s, 0.3 3 s, 1 10 s, 3 30 h, 3 30 min, 3 30 s, 10 100 s, 30 300 h, 30 300 min, 30 300 s Star Delta DIN Rail Single 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 872-5808
Mfr. Part No.RE22R1QMQ
kr 341,62
Each
Units
230 240 V ac, 380 440 V ac 0.1 s 100 h Star Delta DIN Rail Single 2 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 791-2701
Mfr. Part No.RE17LCBM
kr 310,99
Each
Units
24 240 V ac 0.1 s 100 h OFF Delay DIN Rail Single - RE17 Hours, Minutes, Seconds - - 20 A Screw 24 V ac 240 V ac
RS Stock No. 896-8682
Mfr. Part No.RE22R1DMR
kr 533,28
Each
Units
24 240 V ac/dc 0.05 1 s, 0.3 3 s, 1 10 s, 3 30 h, 3 30 min, 3 30 s, 10 100 s, 30 300 h, 30 300 min, 30 300 s Symmetrical DIN Rail Single 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 914-8218
Mfr. Part No.REXL4TMB7
kr 459,00
Each
Units
24 V ac 0.1 s → 100 h Electromechanical Plug In Multi Function 4 - Hours, Minutes, Seconds - - 3 A - - -
RS Stock No. 914-8209
Mfr. Part No.REXL2TMP7
kr 402,00
Each
Units
230 V ac 0.1 → 1 h, 0.1 → 1 min, 0.1 → 1 s, 1 → 10 h, 1 → 10 min, 1 → 10 s, 10 → 100 h ON Delay Plug In Single 2 - Hours, Minutes, Seconds External DPDT 5 A Plug 0.85 V 230 V ac