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. 782-1598
Mfr. Part No.7012PE
kr 7 414,54
Each
Units
- 20 → 200 s - Panel Mount - - - - - - 15 A Screw - 125 V dc
RS Stock No. 134-5386
Mfr. Part No.XB5DTB22
kr 712,80
Each
Units
24 V dc 0.5 → 10 s - Panel Mount Single - Harmony XB5 - External - 10 A Screw - 24 V dc
RS Stock No. 834-7495
Mfr. Part No.3RP1540-1AJ31
BrandSiemens
kr 1 137,94
Each
Units
100 127 V 0.05 600 s OFF Delay DIN Rail Single 1 - Seconds External SPDT 1 A Screw - -
RS Stock No. 144-5919
Mfr. Part No.DRTL06D06
kr 511,62
Each
Units
12 24 V ac/dc 0.1 s 100 h Repeat Cycle DIN Rail 1 2 SeriesOneDR Hours, Minutes, Seconds External SPNO 6 A Screw 12 V ac/dc 24 V ac/dc
RS Stock No. 782-1497
Mfr. Part No.7022AD
kr 6 024,21
Each
Units
- 5 → 50 s - Panel Mount - - - - - - 15 A Screw - 30 V dc, 600 V ac
RS Stock No. 746-7084
Mfr. Part No.1SVR740120R3100
BrandABB
kr 1 157,52
Each
Units
24 240 V ac/dc 0.05 s 10 min OFF Delay without Auxiliary Voltage DIN Rail Single 1 - Minutes, Seconds External SPDT 4 A Push In 12 V 300 V ac
RS Stock No. 159-600
Mfr. Part No.85.04.0.125.0000
BrandFinder
kr 397,37
Each
Units
110 125 V ac/dc 0.05 100s, 0.5 100min Interval, On Delay, Pulse Delayed, Symmetrical Flasher Plug In Multi Function 4 85 Series Hours, Minutes, Seconds External 4PDT 7 A 14-Pin Connector 93.5 V ac/dc 137.5 V ac/dc
RS Stock No. 178-5024
BrandRS PRO
kr 516,94
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 746-7097
Mfr. Part No.1SVR740211R2300
BrandABB
kr 906,27
Each
Units
380 440 V ac 0.05 s 10 min Star Delta Changeover DIN Rail Single 2 - Minutes, Seconds External DPNO 4 A Push In 12 V 300 V ac
RS Stock No. 179-2985
BrandRS PRO
kr 328,61
Each
Units
24 V dc 0.5 → 10 min On-Delay Plug-In Mount 1 4 - - - 4PDT 3 A - - 24 V dc
RS Stock No. 746-6977
Mfr. Part No.1SVR730010R0200
BrandABB
kr 1 154,83
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 358-7112
Mfr. Part No.BC7933N.81 AC/DC24V 3-60M
BrandDold
kr 626,31
Each
Units
110 240 V ac 0.5 100 s, 0.5 60 min Continuous DIN Rail Single 1 BC7933N Minutes, Seconds External SPDT 4 A - 110 V ac 240 V ac
RS Stock No. 177-0095
Mfr. Part No.H3CR-F8N 100-240VAC/100-125VDC
BrandOmron
kr 1 072,00
Each
Units
100 125 V dc, 100 240 V ac 0.05 s 300 h Flicker ON Start DIN Rail Multi Function 2 H3CR Hours, Minutes, Seconds External DPDT 5 A Crimp 100 V ac/dc 125 V dc, 240 V ac
RS Stock No. 872-5801
Mfr. Part No.RE22R1QMU
kr 378,60
Each
Units
24 240 V ac, 24 V dc 0.1 s 100 h Star Delta DIN Rail Single 2 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 102-6123
BrandRS PRO
kr 345,76
Each
Units
12 230 V ac/dc - - DIN Rail - - - - - DPDT - Screw - -
RS Stock No. 102-6129
BrandRS PRO
kr 323,26
Each
Units
12 230 V ac/dc - - DIN Rail - - - - - SPDT - Screw - -
RS Stock No. 179-2927
BrandRS PRO
kr 293,42
Each
Units
230 V ac 0.1 → 1 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 179-2907
BrandRS PRO
kr 1 340,47
Each
Units
100 240 V ac 99.9 s Power On-Delay Plug In - 8 - - - SPDT 5 A - 100 V ac 240 V ac
RS Stock No. 124-9389
Mfr. Part No.3RP2505-2AB30
BrandSiemens
kr 976,70
Each
Units
Maximum of 24 V ac/dc 0.05 s → 100 h Multi Function DIN Rail Multi Function 1 3RP25 Hours, Minutes, Seconds External SPDT 3 A Push In - 24 V ac/dc
RS Stock No. 182-9961
Mfr. Part No.OU1R10MV1
BrandCrouzet
kr 1 145,35
Each
Units
12 240 V ac/dc 0.05 1 days, 0.05 1 h, 0.05 1 min, 0.5 10 days, 0.5 10 h, 0.5 10 min, 0.5 10 s Interval Plug In Multi Function 1 OU1R - - SPDT 10 A Plug In 12 V ac/dc 240 V ac/dc
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