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. 782-1573
Mfr. Part No.7012AH
HK$6,247.64
Each
units
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS Stock No. 782-1576
Mfr. Part No.7012AD
HK$4,544.56
Each
units
- 5 → 50 s - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS Stock No. 782-1582
Mfr. Part No.7012PC
HK$5,110.22
Each
units
- 1.5 → 15 s - Panel Mount - - - - - - 15 A Screw - 125 V dc
RS Stock No. 782-1488
Mfr. Part No.7022AF
HK$6,707.14
Each
units
- 1 → 10 min - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1611
Mfr. Part No.7012CK
HK$6,585.67
Each
units
- 1 → 300 s - Panel Mount - - - - - - 15 A Screw - 480 V ac
RS Stock No. 782-1508
Mfr. Part No.7022PF
HK$9,005.48
Each
units
125 V dc 1 → 10 min - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1491
Mfr. Part No.7022AI
HK$7,314.83
Each
units
- 6 → 60 min - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1510
Mfr. Part No.7022BC
HK$9,853.95
Each
units
- 1.5 → 15 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1494
Mfr. Part No.7022AH
HK$7,117.17
Each
units
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1586
Mfr. Part No.7012PF
HK$5,408.98
Each
units
- 1 → 10 min - Panel Mount - - - - - - 15 A Screw - 125 V dc
RS Stock No. 782-1514
Mfr. Part No.7022BK
HK$6,723.76
Each
units
- 1 → 300 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1497
Mfr. Part No.7022AD
HK$5,634.84
Each
units
- 5 → 50 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 781-2623
Mfr. Part No.7012BC
HK$4,581.19
Each
units
- 1.5 → 15 s - Panel Mount - - - - - - 15 A Screw - 240 V ac
RS Stock No. 782-3131
Mfr. Part No.7012PJL
HK$4,828.07
Each
units
- 3 → 120 s - Panel Mount - - - - - - - - - 125 V dc
RS Stock No. 782-1463
Mfr. Part No.7024AD
HK$8,622.74
Each
units
- 5 → 50 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1517
Mfr. Part No.7022PD
HK$6,119.67
Each
units
- 5 → 50 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1481
Mfr. Part No.7022AK
HK$5,635.29
Each
units
- 1 → 300 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1501
Mfr. Part No.7022PB
HK$5,711.55
Each
units
- 0.5 → 5 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 782-1548
Mfr. Part No.7014PD
HK$8,412.69
Each
units
- 10 → 100 s - Panel Mount - - - - - - 15 A Screw - 125 V dc
RS Stock No. 782-1554
Mfr. Part No.7012AB
HK$4,544.56
Each
units
- 0.5 → 5 s - Panel Mount - - - - - - 15 A Screw - 120 V ac