Timer Relays

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. 237-8793
Mfr. Part No.TT32ML
BrandTempatron
£83.26
Each
Units
12 → 24 V ac/dc 0 → 99:59 h, 0.1 → 999.9 s, 1 → 99:59 min 24 Hour Clock, Cycle, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval, Pulse Delay Panel Mount Multi Function 2 - Hours, Minutes, Seconds External SPNC, SPNO - - - 30 V dc
RS Stock No. 343-997
Mfr. Part No.UDT
BrandTempatron
£107.93
Each
Units
18 → 264 V ac, 18 → 300 V dc 0.01 → 99.9 min, 0.01 → 99.9 h, 0.1 → 99.9 s Delay Cycle, Delay Pulse, Immediate Cycle, Interval, ON Delay Deenergise, ON Delay Energise Plug In Multi Function 1 - Hours, Minutes, Seconds External SP-NO/NC 10 A 11-Pin Connector - 30 V dc, 240 V ac
RS Stock No. 349-872
Mfr. Part No.2BDE20SLP240VAC
BrandTempatron
£50.06
Each
Units
240 V ac 0.5 → 20 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS Stock No. 398-6200
Mfr. Part No.UMT500ML
BrandTempatron
£97.25
Each
Units
12 → 24 V ac/dc 0.1 → 999.9 s, 00:01 → 99.59 h, 00:01 → 99.59 min Cycle Timer with Cycle Limiter, Externally Activated Relay, Interval, ON Delay Deenergise, ON Delay/OFF Delay DIN Rail Multi Function 1 - Hours, Minutes, Seconds External 3P-NO, DP-NO/NC 5 A - - 240 V ac, 30 V dc
RS Stock No. 308-1579
Mfr. Part No.TE48ML
BrandTempatron
£166.18
Each
Units
12 → 24 V ac/dc 0.1 → 999.9 s, 1 → 99:59 h, 1 → 9999 min Cycle Time Monitor, Delay Cycle, Delay Pulse, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval, Sequence Panel Mount Multi Function 2 - Hours, Minutes, Seconds External SPDT, SPNO - - - 26.4 V ac/dc
RS Stock No. 308-1585
Mfr. Part No.TE48MH
BrandTempatron
£166.18
Each
Units
90 → 264 V ac 0.1 → 999.9 s, 1 → 99:59 h, 1 → 9999 min Cycle Time Monitor, Delay Cycle, Delay Pulse, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval, Sequence Panel Mount Multi Function 2 - Hours, Minutes, Seconds External SPDT, SPNO - - - 264 V ac/dc
RS Stock No. 349-771
Mfr. Part No.MDE20SRP30VDC
BrandTempatron
£34.01
Each
Units
10 → 30 V dc 0.5 → 20 s ON Delay PCB Mount Single - - Seconds External - - - - -
RS Stock No. 349-894
Mfr. Part No.2BDE20SLP110VAC
BrandTempatron
£51.03
Each
Units
110 V ac 0.5 → 20 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS Stock No. 347-753
Mfr. Part No.FBDE200SLP230VAC
BrandTempatron
£58.23
Each
Units
230 V ac 5 → 200 s ON Delay Energise Panel Mount, Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - 30 V dc, 240 V ac
RS Stock No. 354-9514
Mfr. Part No.TTDRML
BrandTempatron
£80.28
Each
Units
12 → 24 V ac/dc 0 → 99:59 h, 0.1 → 999.9 s, 1 → 99:59 min 24 Hour Clock, Cycle, Delay Pulse, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval DIN Rail Multi Function 2 - Hours, Minutes, Seconds External SPDT, SPNO - - - 30 V dc, 240 V ac
RS Stock No. 398-6216
Mfr. Part No.UMT500MH
BrandTempatron
£132.49
Each
Units
110 V ac, 230 V ac 0.1 → 999.9 s, 00:01 → 99.59 h, 00:01 → 99.59 min Cycle Timer with Cycle Limiter, Externally Activated Relay, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay/OFF Delay DIN Rail Multi Function 1 - Hours, Minutes, Seconds External 3P-NO, DP-NO/NC 5 A - - 240 V ac, 30 V dc
RS Stock No. 349-888
Mfr. Part No.2BDE200SLP240VAC
BrandTempatron
£51.03
Each
Units
240 V ac 5 → 200 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS Stock No. 349-917
Mfr. Part No.2BDC200SLP200SLP240VAC
BrandTempatron
£69.17
Each
Units
240 V ac 5 → 200 s Delay Cycle Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - 240 V ac, 30 V dc
RS Stock No. 349-923
Mfr. Part No.2BDE20SLP24VDC
BrandTempatron
£51.03
Each
Units
24 V dc 0.5 → 20 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS Stock No. 347-769
Mfr. Part No.FBDE20SLP230VAC
BrandTempatron
£55.41
Each
Units
230 V ac 0.5 → 20 s ON Delay Energise Panel Mount, Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - 30 V dc, 240 V ac
RS Stock No. 420-9166
Mfr. Part No.MDD20SRP30VDC
BrandTempatron
£36.07
Each
Units
10 → 30 V dc 0.5 → 20 s Encapsulated ON Delay Deenergise Panel Mount, PCB Mount Single - - Seconds External - - - - -
RS Stock No. 347-804
Mfr. Part No.2BDC20SLP20SLP240VAC
BrandTempatron
£69.17
Each
Units
240 V ac 0.5 → 20 s Delay Cycle Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - 240 V ac, 30 V dc
RS Stock No. 217-1328
Mfr. Part No.TT4801-01
BrandTempatron
£57.13
Each
Units
230 V ac 6 s → 6 h ON Delay Energise Panel Mount, Plug In Single 2 TT4801 Hours, Minutes, Seconds External DP-NO/NC 5 A 8-Pin Connector - 30 V dc, 240 V ac
RS Stock No. 349-951
Mfr. Part No.2BDE200SLP12VDC
BrandTempatron
£51.03
Each
Units
12 V dc 5 → 200 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS Stock No. 354-9520
Mfr. Part No.TTDRMH
BrandTempatron
£86.48
Each
Units
110 V ac, 230 V ac 0 → 99:59 h, 0.1 → 999.9 s, 1 → 99:59 min 24 Hour Clock, Cycle, Delay Pulse, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval DIN Rail Multi Function 2 - Hours, Minutes, Seconds External SPDT, SPNO - - - 30 V dc, 240 V ac