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庫存編號 914-5070
製造零件編號RENF22R2MMW
HK$676.40
單位
12 → 240 V ac/dc 0.1 s → 100 h Multi Function with NFC DIN Rail Multi Function 2 Zelio Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 240 V ac/dc
RS庫存編號 897-6700
製造零件編號RE22R2ACMR
HK$623.76
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s OFF Delay, ON Delay DIN Rail Multi Function 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 897-6738
製造零件編號RE22R1QCMU
HK$431.84
單位
24 → 240 V ac/dc 0.05 → 300 s Star Delta DIN Rail Single 1 RE22 R1 Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 791-2723
製造零件編號RE17RCMU
HK$381.05
單位
24 V dc, 24 → 240 V ac 0.1 s → 100 h OFF Delay DIN Rail Single 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS庫存編號 897-6725
製造零件編號RE22R2MYMR
HK$815.67
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s OFF Delay, ON Delay DIN Rail Multi Function 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 896-8698
製造零件編號RE22R2KMR
HK$669.28
單位
24 → 240 V ac/dc 0.3 → 300 s OFF Delay DIN Rail Single 2 RE22 R2 Seconds External DPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 897-6740
製造零件編號RE22R2QEMR
HK$876.89
單位
24 → 240 V ac/dc 0.3 → 30 s Star Delta DIN Rail Single 2 RE22 R2 Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 791-2727
製造零件編號RE17RHMU
HK$308.75
單位
24 V dc, 24 → 240 V ac 0.1 s → 100 h ON Pulse DIN Rail Multi Function 1 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS庫存編號 914-8198
製造零件編號REXL2TMB7
HK$460.91
單位
24 V ac 0.1 s → 100 h Electromechanical Plug In Multi Function 2 - Hours, Minutes, Seconds - - 5 A - - -
RS庫存編號 827-3436
製造零件編號RUW101MW
HK$663.62
單位
- - Multi Function Plug In - - - - - - - - 24 V ac/dc 240 V ac/dc
RS庫存編號 791-2711
製造零件編號RE17RAMU
HK$207.64
單位
24 V dc, 24 → 240 V ac 0.1 s → 100 h ON Delay DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS庫存編號 791-2745
製造零件編號RE17RMMU
HK$494.40
單位
24 V dc, 24 → 240 V ac 0.1 s → 100 h - DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw - 24 V dc, 240 V ac
RS庫存編號 914-8215
製造零件編號REXL4TMF7
HK$438.85
單位
110 V ac 0.1 s → 100 h Electromechanical Plug In Multi Function 4 - Hours, Minutes, Seconds - - 3 A - - -
RS庫存編號 914-8209
製造零件編號REXL2TMP7
HK$240.95
單位
230 V ac 0.1 → 1 h, 0.1 → 1 min, 0.1 → 1 s, 1 → 10 h, 1 → 10 min, 1 → 10 s, 10 → 100 h ON Delay Plug In Single 2 - Hours, Minutes, Seconds External DPDT 5 A Plug 0.85 V 230 V ac
RS庫存編號 897-6728
製造零件編號RE22R1MYMR
HK$671.72
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s Dw Symmetrical with Retrigger/Restart Control Signal, Interval Delay, Interval Delay with Control Signal Off, Interval Delay with Control Signal Off and with Pause/Summation Control, Interval Delay with Pause/Summation Control Signal, Interval Delay with Retrigger/Restart Control Signal, Off Delay with Control Signal, Off Delay with Control Signal and with Pause/Summation, On Delay and Off Delay with Control Signal, Power On Delay, Power On Delay with Pause/Summation Control Signal, Power On Delay with Retrigger/Restart Control, Symmetrical, Symmetrical with Pause/Summation Control Signal DIN Rail Multi Function 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 897-6722
製造零件編號RE22R1MLMR
HK$812.72
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s Asymmetrical DIN Rail Single 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 872-5811
製造零件編號RE22R2MMW
HK$678.30
單位
12 → 240 V ac/dc 0.1 s → 100 h Multi Function DIN Rail Multi Function 4 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw - 250 V
RS庫存編號 914-8192
製造零件編號REXL2TMBD
HK$453.94
單位
24 V dc 0.1 s → 100 h Electromechanical Plug In Multi Function 2 - Hours, Minutes, Seconds - - 5 A - - -
RS庫存編號 896-8670
製造零件編號RE22R1HMR
HK$525.97
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s Interval Delay DIN Rail Single 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 896-8692
製造零件編號RE22R1CMR
HK$541.75
單位
24 → 240 V ac/dc 0.05 → 1 s, 0.3 → 3 s, 1 → 10 s, 3 → 30 h, 3 → 30 min, 3 → 30 s, 10 → 100 s, 30 → 300 h, 30 → 300 min, 30 → 300 s OFF Delay DIN Rail Single 1 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw 24 V ac/dc 240 V ac/dc