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

...
Read more Read less

Filters

Viewing 1 - 20 of 1047 products
Results per page
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. 896-6829
BrandRS PRO
£22.26
Each
Units
24 V ac/dc, 110 V ac 0.3 s → 30 h OFF Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 110 V ac
RS Stock No. 896-6822
BrandRS PRO
£21.62
Each
Units
24 V ac/dc, 240 V ac 0.3 s → 30 h OFF Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS Stock No. 896-6810
BrandRS PRO
£19.85
Each
Units
24 V ac/dc, 240 V ac 0.3 s → 30 h ON Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS Stock No. 536-2555
BrandRS PRO
£24.42
Each
Units
- 0 → 30 min - Panel Mount - - - - External - - - - -
RS Stock No. 808-6620
BrandRS PRO
£55.23
Each
Units
230 V ac - One Shot Panel Mount Single 1 - Minutes, Seconds External SPDT 50 mA - - 230 V ac
RS Stock No. 536-2779
BrandRS PRO
£24.37
Each
Units
250 V ac 0 → 120 min - Panel Mount - - - - External - - - - -
RS Stock No. 896-6813
BrandRS PRO
£25.46
Each
Units
12 → 240 V ac/dc 0.1 s → 100 h Multi Function DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 6 A Screw 12 V ac/dc 240 V ac/dc
RS Stock No. 896-6816
BrandRS PRO
£20.53
Each
Units
24 V ac/dc, 110 V ac 0.3 s → 30 h ON Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 110 V ac
RS Stock No. 896-6826
BrandRS PRO
£34.77
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. 896-6844
BrandRS PRO
£45.94
Each
Units
24 → 240 V ac/dc 0.6 → 600 s True Off Delay DIN Rail Single 2 - Seconds External DPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 896-6832
BrandRS PRO
£28.66
Each
Units
240 → 415 V ac 3 → 120 s Star Delta DIN Rail Single 2 - Seconds External CO (Delta), CO (Star) 5 A Screw 240 V ac 415 V ac
RS Stock No. 808-6623
BrandRS PRO
£60.41
Each
Units
24 V ac/dc - One Shot Panel Mount Single 1 - Hours, Minutes, Seconds External SPDT 50 mA - - 24 V ac/dc
RS Stock No. 896-6848
BrandRS PRO
£34.65
Each
Units
24 → 240 V ac/dc 0.1 s → 10 h ON Delay DIN Rail Multi Function 2 - Seconds External DPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 798-3444
BrandRS PRO
£32.71
Each
Units
230 V ac - Interval Clamp Single 1 - Hours, Minutes, Seconds External NC, SPNO - - - 230 V ac
RS Stock No. 896-6863
BrandRS PRO
£37.21
Each
Units
24 → 240 V ac/dc 01. s → 999 h Multi Function DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A - 24 V ac/dc 240 V ac/dc
RS Stock No. 102-6122
BrandRS PRO
£24.92
Each
Units
12 → 230 V ac/dc - - DIN Rail Multi Function - - - - SPDT - Screw - -
RS Stock No. 896-6872
BrandRS PRO
£73.07
Each
Units
110 → 240 V ac 01.s → 999 days Multi Function Panel Mount Multi Function 2 - Days, Hours, Minutes, Seconds External - 5 A PCB Pin 110 V ac 240 V ac
RS Stock No. 896-6857
BrandRS PRO
£35.63
Each
Units
24 → 240 V ac/dc 3 → 120 s Star Delta DIN Rail Single 2 - Seconds External SPNO 5 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 896-6838
BrandRS PRO
£25.71
Each
Units
240 V ac 3 → 120 s Star Delta DIN Rail Single 2 - Seconds External SPNO 5 A Screw - 24 V ac/dc, 240 V ac
RS Stock No. 896-6866
BrandRS PRO
£34.08
Each
Units
24 → 240 V ac/dc 01. s → 999 h Multi Function DIN Rail Multi Function 2 - Hours, Minutes, Seconds External DPNO 8 A - 24 V ac/dc 240 V ac/dc
Related Products
These PCB mount polarized power relays are compact ...
Description:
These PCB mount polarized power relays are compact (29x13x16.5mm) with a high capacity and are availble with a test button to facilitate circuit checks. Typical applications for these PCB power relays include FA equipment, electric power devices, household appliance networks and time switches. Variety of contact arrangements Power latching, high ...
These PCB relays are a flat, compact size ...
Description:
These PCB relays are a flat, compact size being only 5 mm in height. High efficiency magnetic circuits enable high density mounting. These 5 mm PCB relays also offer a low thermal electromotive force and high contact reliability.Typical applications include communications, OA and measurement equipment and industrial machines. Low profile,flat ...
Timing relay SIRIUS 3RP25, 27 functions, for all ...
Description:
Timing relay SIRIUS 3RP25, 27 functions, for all switching operations involving time delays in control, starting, protection and regulation circuits.Wide range of applications due to wide variety of functions within a very small space. Can be used worldwide thanks to international approvals and wide range of voltages. The innovative enclosure ...
OFF-Delay timing relays SIRIUS 3RP15 are used in ...
Description:
OFF-Delay timing relays SIRIUS 3RP15 are used in control, starting, and protective circuits for all switching operations involving time delays. They guarantee a high level of functionality and a high repeat accuracy of timer settings. OFF-Delay Function LED for indicating timing relay on voltage LED for indicating relay switched Time ...