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. 113-8128
Mfr. Part No.H3CR-A AC24-48/DC12-48
BrandOmron
MYR414.61
Each
units
12 → 48 V dc, 24 → 48V ac 0.05 s → 300h - - Multi Function 2 H3CR Hours, Seconds External - 5A 11-Pin Connector - 125 V dc, 250V ac
RS Stock No. 349-771
Mfr. Part No.MDE20SRP30VDC
BrandTempatron
MYR249.34
Each
units
10 → 30V dc 0.5 → 20s - PCB Mount Single - - Seconds External - - - - -
RS Stock No. 341-373
Mfr. Part No.XM-D1
MYR301.32
Each
units
10.5 → 265V ac/dc 0.6 → 60min - DIN Rail Multi Function 1 XM-D1 Minutes External SPDT 8A Screw 10.5 V ac/dc, 24V dc 265V ac/dc
RS Stock No. 798-3514
Mfr. Part No.V2ZM10 12-240V AC/DC
BrandTele
MYR341.65
Each
units
12 → 240V 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 → 180s - DIN Rail Multi Function 1 V2ZM10 - Internal SPDT - Screw - -
RS Stock No. 818-4563
Mfr. Part No.1CMDT0
BrandGIC
MYR122.94
Each
units
12 → 240V ac/dc 0.1 s → 100h - DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 6A Screw 12V ac/dc 240V ac/dc
RS Stock No. 896-8695
Mfr. Part No.RE22R1KMR
MYR373.93
Each
units
24 → 240V ac/dc 0.3 → 300s - DIN Rail Single 1 RE22 R1 Seconds External SPDT 5A Screw 24V ac/dc 240V ac/dc
RS Stock No. 188-4584
Mfr. Part No.H3CR-F8 AC100-240
BrandOmron
MYR603.53
Each
units
100 → 240V ac 0.05 s → 30h - - Single 2 H3CR Hours, Seconds External - 5A - - 30 V dc, 250V ac
RS Stock No. 914-5070
Mfr. Part No.RENF22R2MMW
MYR555.46
Each
units
12 → 240V ac/dc 0.1 s → 100h - DIN Rail Multi Function 2 Zelio Hours, Minutes, Seconds External DPDT 8A Screw 12V ac/dc 240V ac/dc
RS Stock No. 358-7156
Mfr. Part No.BC7932N.81 AC/DC24V + AC230V 0.5-10S
BrandDold
MYR345.68
Each
units
24 V ac/dc, 230V ac 0.5 → 10s - DIN Rail Single 1 BC7932N Seconds External SPDT 3A Screw - 230V ac
RS Stock No. 831-6031
Mfr. Part No.3RP2525-1AW30
BrandSiemens
MYR514.03
Each
units
12 → 240V ac/dc 0.05 s → 100h - - Single 1 - Hours, Seconds - SPDT - Screw 12V ac/dc 240V ac/dc
RS Stock No. 536-2779
BrandRS PRO
MYR197.93
Each
units
250V ac 0 → 120min - Panel Mount - - - - External - - - - -
RS Stock No. 225-8267
Mfr. Part No.031882 & ETR4-11-A
BrandEaton
MYR604.76
Each
units
24 → 240V ac/dc 0.05 s → 60h - DIN Rail Single 1 ETR4 Hours, Seconds External SPDT 3A Screw 24V ac/dc 240 V dc, 400V ac
RS Stock No. 446-0327
Mfr. Part No.80.01.0.240.0000
BrandFinder
MYR332.51
Each
units
12 → 240V ac/dc 0.1 → 20 min, 0.1 → 20 s, 0.1 → 24h - DIN Rail Multi Function 1 80 Series Hours, Minutes, Seconds External SPDT 16A Screw 250V ac 400V ac
RS Stock No. 296-2376
Mfr. Part No.031888 & ETR4-70-A
BrandEaton
MYR917.13
Each
units
24 → 240V ac/dc 0.05 s → 60h - DIN Rail Multi Function 2 ETR4 Hours, Seconds External DPDT 6A Screw 12V ac/dc 240V ac/dc
RS Stock No. 774-0317
Mfr. Part No.88827125
BrandCrouzet
MYR405.83
Each
units
24 → 240 V ac, 24V dc 0.1 s → 100h - DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8A Screw - -
RS Stock No. 774-0304
Mfr. Part No.88827105
BrandCrouzet
MYR395.54
Each
units
24 → 240 V ac, 24V dc 0.1 s → 100h - DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8A Screw - -
RS Stock No. 774-0314
Mfr. Part No.88827145
BrandCrouzet
MYR261.84
Each
units
24 → 240 V ac, 24V dc 0.1 s → 100h - DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8A Screw - -
RS Stock No. 774-0310
Mfr. Part No.88827135
BrandCrouzet
MYR327.72
Each
units
24 → 240 V ac, 24V dc 0.1 s → 100h - DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8A Screw - -
RS Stock No. 834-7515
Mfr. Part No.3RP2005-1BW30
BrandSiemens
MYR1,016.70
Each
units
24 → 240V 0.05 s → 100h - DIN Rail Multi Function 2 - Hours, Minutes, Seconds External DPDT 1A Screw - -
RS Stock No. 791-2723
Mfr. Part No.RE17RCMU
MYR195.94
Each
units
24 V dc, 24 → 240V ac 0.1 s → 100h - DIN Rail Single 2 RE17 Hours, Minutes, Seconds - SPDT 8A Screw 24V ac 24 V dc, 240V ac