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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รายละเอียดสินค้า / Description ราคา / 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. 536-2555
Brand :RS PRO
THB1,001.52
Each
Units
250 V ac 0 30 min - Panel Mount - - - - External - - - - -
RS Stock No. 896-6822
Brand :RS PRO
THB771.90
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. 896-6813
Brand :RS PRO
THB918.98
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. 896-6810
Brand :RS PRO
THB698.44
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. 896-6816
Brand :RS PRO
THB688.49
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. 896-6835
Brand :RS PRO
THB1,112.91
Each
Units
115 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. 808-6620
Brand :RS PRO
THB2,448.76
Each
Units
230 V ac - One Shot Panel Mount Single 1 - Minutes, Seconds External SPDT 50 mA - - 230 V ac
RS Stock No. 896-6841
Brand :RS PRO
THB1,644.41
Each
Units
24 → 240 V ac/dc 0.1 s → 120 days Multi Function DIN Rail Multi Function 1 - Seconds External SPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS Stock No. 102-6122
Brand :RS PRO
THB1,176.06
Each
Units
12 → 230 V ac/dc - - DIN Rail Multi Function - - - - SPDT - Screw - -
RS Stock No. 808-6623
Brand :RS PRO
THB2,676.29
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. 102-6127
Brand :RS PRO
THB1,036.47
Each
Units
12 230 V ac/dc - - DIN Rail - - - - - SPDT - Screw - -
RS Stock No. 179-2937
Brand :RS PRO
THB1,324.00
Each
Units
110 V ac 0.1 1 s On-Delay Plug-In Mount Single 2 - - - DPDT 5 A - - 110 V ac
RS Stock No. 179-2934
Brand :RS PRO
THB1,260.00
Each
Units
230 V ac 0.2 5 min On-Delay Plug-In Mount Single 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 179-2935
Brand :RS PRO
THB1,260.00
Each
Units
230 V ac 0.5 10 min On-Delay Plug-In Mount Single 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 896-6857
Brand :RS PRO
THB1,540.03
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. 179-2903
Brand :RS PRO
THB5,755.00
Each
Units
12 48 V dc 99.99 s Power On Delay Plug-In Mount Single 1 - - External SPDT 5 A - 12 V dc 48 V dc
RS Stock No. 896-6866
Brand :RS PRO
THB1,577.94
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
RS Stock No. 179-2956
Brand :RS PRO
THB1,411.00
Each
Units
24 V dc 1 30 min On-Delay Plug-In Mount Single 2 - - - DPDT 5 A - - 24 V dc
RS Stock No. 179-2917
Brand :RS PRO
THB2,627.00
Each
Units
100 125 V dc, 100 240 V ac 0.1 s 300 h A: ON-Delay, B2: Flicker ON Start, E: Interval, J: One-Shot Panel Mount, Plug-In Mount - 2 - - - DPDT 5 A - 100 V ac/dc 125 V dc, 240 V ac
RS Stock No. 161-7612
Brand :RS PRO
THB2,015.56
Each
Units
10.5 265 V ac/dc 0.6 s 60 min Off Pulse, ON Pulse with Control Switch, ON Pulse without Control Switch, On-Off Pulse Plug In Multi Function 1 - Minutes, Seconds External - 8 A 11-Pin Connector 10.5 V ac/dc 265 V ac/dc
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