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. 160-262
Mfr. Part No.E1ZMQ10 24-240V AC/DC
BrandTele
HK$351.50
Each
units
24 → 240 V ac/dc 50 ms → 100 h Flash Pause First, OFF Delay, ON Delay, One Shot Leading Edge Voltage Controlled DIN Rail Multi Function 1 E1ZMQ10 Hours, Milliseconds, Minutes, Seconds External SPDT 8 A - - 250 V ac
RS Stock No. 349-888
Mfr. Part No.2BDE200SLP240VAC
BrandTempatron
HK$586.56
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. 896-8692
Mfr. Part No.RE22R1CMR
HK$580.29
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 OFF Delay 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. 746-5126
Mfr. Part No.3RP1505-1BW30
BrandSiemens
HK$2,019.69
Each
units
24 → 240 V ac/dc 0.5 → 10 min - DIN Rail Multi Function 2 - Minutes External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 798-3511
Mfr. Part No.V2ZE10 24-240V AC/DC
BrandTele
HK$371.96
Each
units
24 → 240 V ac/dc 0.05 → 1 s, 0.15 → 3 s, 0.5 → 10 h, 0.5 → 10 min, 0.5 → 10 s, 1.5 → 30 s, 3 → 60 min, 3 → 60 s, 5 → 100 h, 9 → 180 s Interval DIN Rail Single 1 V2ZE10 - Internal SPDT 0.1 (DC-13) A, 1.5 (AC-15) A, 8 (AC-1) A, 8 (DC-12) A Screw - -
RS Stock No. 774-0326
Mfr. Part No.88827503
BrandCrouzet
HK$813.20
Each
units
12 → 240 V ac/dc 0.1 s → 100 h Asymmetrical, Interval, OFF Delay, ON Delay, ON Pulse, Symmetrical DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Cage Clamp - -
RS Stock No. 308-1579
Mfr. Part No.TE48ML
BrandTempatron
HK$1,901.10
Each
units
12 → 24 V ac/dc 0.1 → 999.9 s, 1 → 9999 min, 1 → 99:59 h 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. 446-0327
Mfr. Part No.80.01.0.240.0000
BrandFinder
HK$654.49
Each
units
12 → 240 V ac/dc 0.1 → 20 min, 0.1 → 20 s, 0.1 → 24 h Interval, Interval with Control Signal ON, OFF Delay with Control Signal, ON & OFF Delay with Control Signal, ON Delay, Symmetrical Flash (Starting Pulse ON) DIN Rail Multi Function 1 80 Series Hours, Minutes, Seconds External SPDT 16A Screw 250 V ac 400 V ac
RS Stock No. 791-2745
Mfr. Part No.RE17RMMU
HK$524.51
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h - DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw - 24 V dc, 240 V ac
RS Stock No. 225-8267
Mfr. Part No.ETR4-11-A
BrandEaton
HK$876.53
Each
units
24 → 240 V ac/dc 0.05 s → 60 h ON Delay DIN Rail Single 1 ETR4 Hours, Seconds External SPDT 3 A Screw 24 V ac/dc 240 V dc, 400 V ac
RS Stock No. 896-6826
BrandRS PRO
HK$284.27
Each
units
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 Stock No. 782-1573
Mfr. Part No.7012AH
HK$4,304.15
Each
units
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS Stock No. 188-4613
Mfr. Part No.H3CR-H8L AC/DC24 M
BrandOmron
HK$861.43
Each
units
24 V ac/dc 0.05 → 12 min OFF Delay DIN Rail, Flush Mount, Surface Mount Single 2 H3CR Minutes, Seconds External - 5 A 8-Pin Connector - 30 V dc, 250 V ac
RS Stock No. 442-9297
Mfr. Part No.1SVR550029R8100
BrandABB
HK$640.13
Each
units
24 → 240 V ac/dc 0.05 s → 100 h Flash Start with OFF, Flash Start with ON, Impulse ON, OFF Delay, ON Delay, Pulse Former DIN Rail Multi Function 1 - Hours, Seconds External SPDT 4 A Screw - 250 V ac/dc
RS Stock No. 759-6659
Mfr. Part No.83.41.0.240.0000
BrandFinder
HK$503.82
Each
units
24 → 240 V ac/dc 0.05-10 d, 0.05-10 h, 0.05-10 min, 0.05-10 s OFF Delay with Control Signal DIN Rail Single 1 83 Series Days, Hours, Minutes, Seconds External SPDT 0.12 A - 16.8 V ac/dc 265 V ac / V dc
RS Stock No. 914-4597
Mfr. Part No.LEDO/2 12-230V AC/DC
HK$315.33
Each
units
12 → 230 V ac/dc 0.1 s → 100 h ON Delay DIN Rail - 2 - Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 230 V ac/dc
RS Stock No. 733-4956
Mfr. Part No.H3DK-M1 AC/DC24-240
BrandOmron
HK$773.55
Each
units
24 → 240 V ac/dc 0.1 s → 1200 h Flicker OFF Start, Flicker ON Start, Interval, OFF Delay, ON Delay, ON/OFF Delay, One Shot Output DIN Rail Multi Function - H3DK Hours, Minutes, Seconds - SPDT 5 A Screw 24 V 30 V dc, 250 V ac
RS Stock No. 897-6728
Mfr. Part No.RE22R1MYMR
HK$716.09
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. 106-6235
Mfr. Part No.H3DT-L1
BrandOmron
HK$535.29
Each
units
24 → 240 V ac/dc 0.1 s → 100 h Delay ON, Delay ON/OFF, Flicker OFF Start, Flicker ON Start, Interval, One Shot DIN Rail Multi Function 2 H3DT - External SPDT 5 A Screw - 30 V dc, 250 V ac
RS Stock No. 746-6993
Mfr. Part No.1SVR730040R3300
BrandABB
HK$821.85
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 300 h Adjustable Impulse with Fixed Time Relay, Fixed Impulse with Adjustable Time Relay, Flash Start with OFF, Flash Start with ON, Impulse ON, ON Delay DIN Rail Multi Function 2 - Hours, Seconds External DPDT 4 A Screw 12 V 300 V ac
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