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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Nombre de résultats par page
Description Prix 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
N° de stock RS 470-787
Référence fabricant2866161
67,94 €
Each
Unité
24 240 V ac/dc 50 ms 100 h Flash Start with Pause, Flash Start with Pulse, One Shot Leading Edge, One Shot Leading Edge with Control Contact, One Shot Trailing Edge with Control Contact, Release Delay with Control Contact, Switch ON Delay, Switch ON Delay with Control Contact, Voltage Controlled DIN Rail Multi Function 2 ETD-SL-1T-DTF Hours, Milliseconds External - 5 A Screw - 250 V
N° de stock RS 877-8133
Référence fabricant2905813
52,57 €
Each
Unité
- 50 ms → 1 h One Shot with Control Contact, Release Delay with Control Contact, Switch ON Delay, Switch ON Delay with Control Contact DIN Rail Multi Function 2 - Hours, Milliseconds External SPDT - Screw 24 V ac/dc 240 V ac/dc
N° de stock RS 684-3682
Référence fabricant2917467
40,67 €
Each
Unité
19.2 30 V dc 0.3 30 min OFF Delay with Control Contact DIN Rail Single 1 ETD-BL-1T-OFF-CC- 30MIN Minutes External - 6.3 A Screw - -
N° de stock RS 877-8091
Référence fabricant2901481
40,67 €
Each
Unité
- 3 → 300 s Switch ON Delay DIN Rail Single 2 ETD-BL-1T-ON-CC-300S-PT Seconds External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 684-3670
Référence fabricant2917450
40,67 €
Each
Unité
19.2 30 V dc 0.1 10 s OFF Delay with Control Contact DIN Rail Single 1 - Minutes External - 6.3 A Screw - -
N° de stock RS 684-3660
Référence fabricant2917418
40,67 €
Each
Unité
19.2 30 V dc 0.1 10 s ON Delay with Control Contact DIN Rail Single 1 ETD-BL-1T-ON-CC- 10S Seconds External - 6.3 A Spring Clamp - -
N° de stock RS 877-8102
Référence fabricant2901486
40,67 €
Each
Unité
- 3 → 300 s Switch OFF Delay DIN Rail Single 2 ETD-BL-1T-OFF-CC-300S-PT Seconds External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 877-8079
Référence fabricant2867924
71,24 €
Each
Unité
- 500 ms → 3 min Star Delta DIN Rail Single 2 ETD-SL-1T-S Milliseconds, Minutes External DPDT - Screw 24 V dc 230 V dc
N° de stock RS 877-8076
Référence fabricant2866174
76,07 €
Each
Unité
- 50 ms → 100 h Switched Mode DIN Rail Single 2 ETD-SL-2T-I Hours, Milliseconds External DPDT - Screw 24 V dc 240 V dc
N° de stock RS 877-8073
Référence fabricant2901476
40,67 €
Each
Unité
- 0.1 → 10 s Switch ON Delay DIN Rail Single 2 ETD-BL-1T-ON- 10S-PT Seconds External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 684-3692
Référence fabricant2917515
40,67 €
Each
Unité
19.2 30 V dc 0.3 30 min Flash Start with Pulse DIN Rail Single 1 ETD-BL-1T-F- 30MIN Minutes External - 6.3 A Screw - -
N° de stock RS 684-3686
Référence fabricant2917489
40,67 €
Each
Unité
19.2 30 V dc 3 300 min OFF Delay with Control Contact DIN Rail Single 1 ETD-BL-1T-OFF-CC-300MIN Minutes External - 6.3 A Screw - -
N° de stock RS 877-8114
Référence fabricant2901488
40,67 €
Each
Unité
- 3 → 300 min Switch OFF Delay DIN Rail Single 2 ETD-BL-1T-OFF-CC-300MIN-PT Minutes External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 684-3698
Référence fabricant2917502
40,67 €
Each
Unité
19.2 30 V dc 3 300 s Flash Start with Pulse DIN Rail Single 1 ETD-BL-1T-F-300S Seconds External - 6.3 A Screw - -
N° de stock RS 684-3651
Référence fabricant2917379
40,67 €
Each
Unité
19.2 30 V dc 0.1 10 s ON Delay DIN Rail Single 1 ETD-BL-1T-ON- 10S Seconds External - 6.3 A Spring Clamp - -
N° de stock RS 877-8120
Référence fabricant2901491
40,67 €
Each
Unité
- 0.3 30 min Flasher DIN Rail Single 2 - Minutes External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 684-3673
Référence fabricant2917434
40,67 €
Each
Unité
19.2 30 V dc 0.3 30 min ON Delay with Control Contact DIN Rail Single 1 ETD-BL-1T-ON-CC- 30MIN Minutes External - 6.3 A Screw - -
N° de stock RS 877-8089
Référence fabricant2901479
40,67 €
Each
Unité
- 3 → 300 min Switch ON Delay DIN Rail Single 2 ETD-BL-1T-ON-300MIN-PT Minutes External SPDT - Screw 19.2 V dc 30 V dc
N° de stock RS 189-2323
Référence fabricant2910141
55,59 €
Each
Unité
19.2 30 V dc 0.1 s 300 min Flashing Beginning with Pulse, Release Delay and Control Contact, Switch-On Delay, Switch-On Delay and Control Contact DIN Rail - 1 PLC-TR-1T-MUL-300M-PT Minutes, Seconds - SPDT 6 A Push-In 19.2 V dc 30 V dc
N° de stock RS 189-2322
Référence fabricant2910140
55,59 €
Each
Unité
19.2 30 V dc 0.1 s 300 min Flashing Beginning with Pulse, Release Delay and Control Contact, Switch-On Delay, Switch-On Delay and Control Contact DIN Rail - 1 PLC-TR-1T-MUL-300M Minutes, Seconds - SPDT 6 A Screw 19.2 V dc 30 V dc