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. 442-9326
Mfr. Part No.1SVR550118R1100
BrandABB
PHP3,627.04
Each
units
24 V ac/dc 0.1 → 10 s OFF Delay DIN Rail Single 1 - Seconds External SPDT - - - -
RS Stock No. 442-9310
Mfr. Part No.1SVR550111R4100 - CT-AHE
BrandABB
PHP3,627.04
Each
units
220 → 240 V ac 0.3 → 30 s OFF Delay DIN Rail Single 1 - Seconds External SPDT - - - -
RS Stock No. 442-9332
Mfr. Part No.1SVR550118R4100
BrandABB
PHP3,627.04
Each
units
24 V ac/dc 0.3 → 30 s OFF Delay DIN Rail Single 1 - Seconds External SPDT - - - -
RS Stock No. 442-9297
Mfr. Part No.1SVR550029R8100
BrandABB
PHP4,273.17
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. 442-9398
Mfr. Part No.1SVR550217R4100
BrandABB
PHP2,960.76
Each
units
24 V ac/dc, 200 → 240 V ac 0.3 → 30 s ON Delay DIN Rail Single 2 - Seconds External SPDT 4 A - - 250 V
RS Stock No. 489-7167
Mfr. Part No.1SVR500100R0000
BrandABB
PHP3,915.23
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 100 h ON Delay DIN Rail Single 1 - Hours, Seconds External SPDT 6 A Screw 12 V 250 V
RS Stock No. 746-7006
Mfr. Part No.1SVR730100R0300
BrandABB
PHP6,068.16
Each
units
24 → 240 V ac/dc - - DIN Rail - - - - - - - - - -
RS Stock No. 185-081
Mfr. Part No.1SVR500100R0100 - CT-ERD.22,1SVR5001
BrandABB
PHP5,091.85
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 100 h ON Delay DIN Rail Single 2 - Hours, Seconds External DPDT 6 A - 12 V 250 V
RS Stock No. 489-7173
Mfr. Part No.1SVR500110R0000
BrandABB
PHP3,572.91
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 100 h OFF Delay DIN Rail Single 1 - Hours, Seconds External SPDT 6 A Screw 12 V 250 V
RS Stock No. 442-9045
Mfr. Part No.1SVR550107R4100
BrandABB
PHP2,746.46
Each
units
200 → 240 V ac, 24 V ac/dc 0.3 → 30 s ON Delay DIN Rail Single 1 - Seconds External SPDT 4 A - - 250 V
RS Stock No. 456-0326
Mfr. Part No.1SBN020010R1002
BrandABB
PHP4,760.59
Each
units
110 → 120 V ac 0.8 → 60 s Star Delta DIN Rail Single - - Seconds External - 4 A Screw - 230 V ac
RS Stock No. 442-9354
Mfr. Part No.1SVR550127R4100
BrandABB
PHP3,705.18
Each
units
24 V ac/dc, 200 → 240 V ac 0.3 → 30 s OFF Delay DIN Rail Single 1 - Seconds External SPDT - - - -
RS Stock No. 456-0348
Mfr. Part No.1SBN020010R1004
BrandABB
PHP4,760.59
Each
units
380 → 440 V ac 0.8 → 60 s Star Delta DIN Rail Single - - Seconds External - 4 A Screw - 230 V ac
RS Stock No. 746-6993
Mfr. Part No.1SVR730040R3300
BrandABB
PHP5,512.26
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
RS Stock No. 746-7012
Mfr. Part No.1SVR730110R3300
BrandABB
PHP6,068.16
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 300 h OFF Delay DIN Rail Single 2 - Hours, Seconds External DPDT 4 A Screw 12 V 300 V ac
RS Stock No. 746-6999
Mfr. Part No.1SVR730030R3300
BrandABB
PHP8,564.87
Each
units
- - - - - - - - - - - - - -
RS Stock No. 456-0310
Mfr. Part No.1SBN020010R1001
BrandABB
PHP4,758.17
Each
units
24 V ac/dc 0.8 → 8 s, 6 → 60 s ON Delay DIN Rail Single - - Seconds External - 5 A Screw 24 V ac 240 V ac
RS Stock No. 456-0332
Mfr. Part No.1SBN020010R1003
BrandABB
PHP4,760.59
Each
units
220 → 240 V ac 0.8 → 8 s, 6 → 60 s ON Delay DIN Rail Single - - Seconds External - 5 A Screw 24 V ac 240 V ac
RS Stock No. 442-9168
Mfr. Part No.1SVR550019R0000
BrandABB
PHP4,590.59
Each
units
24 → 240 V ac/dc 0.1 → 300 s Flash Start with OFF, Flash Start with ON, Impulse ON, ON Delay DIN Rail Multi Function - - Seconds External Solid State Output - - - -
RS Stock No. 185-025
Mfr. Part No.1SVR500211R0100 - CT-SDD.22
BrandABB
PHP3,996.83
Each
units
24 → 240 V ac, 24 → 48 V dc 0.05 s → 10 min Star Delta DIN Rail Single 2 - Minutes, Seconds External DPNO 6 A - 12 V 250 V