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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Viewing 1 - 20 of 49 products
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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. 774-0304
Mfr. Part No.88827105
BrandCrouzet
$91.27
Each
units
24 → 240 V ac, 24 V 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 Screw - -
RS Stock No. 774-0314
Mfr. Part No.88827145
BrandCrouzet
$66.74
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h Interval DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0310
Mfr. Part No.88827135
BrandCrouzet
$74.39
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h OFF Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0317
Mfr. Part No.88827125
BrandCrouzet
$74.39
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h ON Pulse Timer DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0308
Mfr. Part No.88827115
BrandCrouzet
$68.64
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h ON Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0301
Mfr. Part No.88827103
BrandCrouzet
$109.80
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 Screw - -
RS Stock No. 774-0348
Mfr. Part No.88827004
BrandCrouzet
$104.96
Each
units
20 → 240 V ac 0.1 s → 100 h Asymmetrical, Interval, OFF Delay, ON Delay, ON Pulse, Symmetrical DIN Rail Multi Function 1 - Hours, Minutes, Seconds External Solid State NO/NC 0.7 A Screw - -
RS Stock No. 467-6869
Mfr. Part No.88886016
BrandCrouzet
$170.05
Each
units
12 → 240 V dc, 24 → 240 V ac 0.02 → 300 h, 0.02 → 300 min, 0.02 → 300 s A, AC, B, BW, C, G, W Plug In Multi Function 2 - Hours, Minutes, Seconds External DPDT 5 A 11-Pin Connector 12 V dc, 24 V ac 240 V ac/dc
RS Stock No. 467-6875
Mfr. Part No.88886116
BrandCrouzet
$171.47
Each
units
12 → 240 V dc, 24 → 240 V ac 0.02 → 300 h, 0.02 → 300 min, 0.02 → 300 s A1, A2, D, Di, H1, H2, Q1, Q2 Plug In Multi Function 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector 12 V dc, 24 V ac 240 V ac/dc
RS Stock No. 774-0339
Mfr. Part No.88827014
BrandCrouzet
$81.53
Each
units
24 → 240 V ac/dc 0.1 s → 100 h ON Delay DIN Rail Single 1 - Hours, Minutes, Seconds External Solid State NO/NC 0.7 A Screw - -
RS Stock No. 349-6858
Mfr. Part No.88865265
BrandCrouzet
$203.45
Each
units
24 V dc, 24 → 240 V ac 0.6 → 160 s OFF Delay DIN Rail Single 2 - Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 433-3887
Mfr. Part No.88901308
BrandCrouzet
$176.67
Each
units
100 → 240 V ac/dc 0.1 → 1 s ON Delay Panel Mount Single - - Seconds External - 400 mA Screw - -
RS Stock No. 467-6897
Mfr. Part No.88886106
BrandCrouzet
$152.81
Each
units
12 → 240 V dc, 24 → 240 V ac 0.02 → 300 h, 0.02 → 300 min, 0.02 → 300 s ON Delay Plug In Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector 12 V dc, 24 V ac 240 V ac, 240 V dc
RS Stock No. 774-0323
Mfr. Part No.88827155
BrandCrouzet
$79.50
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h Asymmetrical DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0336
Mfr. Part No.88827044
BrandCrouzet
$65.56
Each
units
24 → 240 V ac 0.1 s → 100 h Interval DIN Rail Single 1 - Hours, Minutes, Seconds External Solid State NO/NC 0.7 A Screw - -
RS Stock No. 774-0326
Mfr. Part No.88827503
BrandCrouzet
$104.09
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. 774-0332
Mfr. Part No.88827185
BrandCrouzet
$86.05
Each
units
24 → 240 V ac, 24 V dc 0.1 s → 100 h Flip Flop, Impulse Counter, ON Delay, Safe Guard, Timed Impulse Relay DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 433-3900
Mfr. Part No.88901302
BrandCrouzet
$141.64
Each
units
24 V dc 0.1 → 1 s ON Delay Panel Mount Single - - Seconds External - 200 mA Screw - -
RS Stock No. 837-7471
Mfr. Part No.88866175
BrandCrouzet
$106.79
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h Star Delta DIN Rail Multi Function, Single 2 - Hours, Minutes, Seconds External - 16 A Screw - -
RS Stock No. 774-0345
Mfr. Part No.88827054
BrandCrouzet
$108.78
Each
units
24 → 240 V ac 0.1 s → 100 h Asymmetrical DIN Rail Single 1 - Hours, Minutes, Seconds External Solid State 0.7 A Screw - -