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. 341-395
Mfr. Part No.XT-D1
kr 609,59
Each
Units
10.5 → 265 V ac/dc 0.6 min → 60 min, 0.6 s → 60 s Asymmetrical Recycler with Pause Start, Asymmetrical Recycler with Pulse Start DIN Rail Multi Function 1 XT-D1 Hours, Minutes External SPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS Stock No. 828-5155
Mfr. Part No.LEDO 12-230V AC/DC
kr 325,92
Each
Units
12 → 230 V ac/dc 0.1 s → 100 h ON Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw 12 V ac/dc 265 V ac/dc
RS Stock No. 225-8267
Mfr. Part No.031882 | ETR4-11-A
BrandEaton
kr 781,96
Each
Units
24 → 240 V ac/dc 0.05 s → 60 h ON Delay DIN Rail Single 1 ETR4 Hours, Seconds External SPDT 3 A Screw 24 V ac/dc 240 V dc, 400 V ac
RS Stock No. 102-6127
BrandRS PRO
kr 375,67
Each
Units
12 → 230 V ac/dc - - DIN Rail - - - - - SPDT - Screw - -
RS Stock No. 774-0323
Mfr. Part No.88827155
BrandCrouzet
kr 723,52
Each
Units
24 V dc, 24 → 240 V ac 0.1 s → 100 h Asymmetrical DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 188-4578
Mfr. Part No.H3CR-F8 AC/DC24
BrandOmron
kr 1 072,00
Each
Units
24 V ac/dc 0.05 s → 30 h Flicker OFF DIN Rail, Flush Mount, Surface Mount Single 2 H3CR Hours, Seconds External - 5 A 8-Pin Connector - 30 V dc, 250 V ac
RS Stock No. 774-0326
Mfr. Part No.88827503
BrandCrouzet
kr 826,61
Each
Units
12 → 240 V ac/dc 0.1 s → 100 h Asymmetrical, Interval, OFF Delay, ON Delay, ON Pulse, Symmetrical DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Cage Clamp - -
RS Stock No. 459-4341
Mfr. Part No.CT3-E30 / S
BrandReleco
kr 843,76
Each
Units
9.5 → 18 V dc 0.2 → 30 min, 0.2 → 30 s ON Delay Plug In Single - - Minutes, Seconds External - - 11-Pin Connector 9.5 V dc 18 V dc
RS Stock No. 467-6897
Mfr. Part No.88886106
BrandCrouzet
kr 685,64
Each
Units
12 → 240 V dc, 24 → 240 V ac 0.02 → 300 h, 0.02 → 300 min, 0.02 → 300 s ON Delay Plug In Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector 12 V dc, 24 V ac 240 V ac, 240 V dc
RS Stock No. 341-373
Mfr. Part No.XM-D1
kr 525,60
Each
Units
10.5 → 265 V ac/dc 0.6 → 60 min ON Delay, ON Pulse, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start DIN Rail Multi Function 1 XM-D1 Minutes External SPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS Stock No. 791-2701
Mfr. Part No.RE17LCBM
kr 570,24
Each
Units
24 → 240 V ac 0.1 s → 100 h OFF Delay DIN Rail Single - RE17 Hours, Minutes, Seconds - - 20 A Screw 24 V ac 240 V ac
RS Stock No. 746-6999
Mfr. Part No.1SVR730030R3300
BrandABB
kr 1 154,83
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 872-5808
Mfr. Part No.RE22R1QMQ
kr 466,56
Each
Units
230 → 240 V ac, 380 → 440 V ac 0.1 s → 100 h Star Delta DIN Rail Single 2 RE22 R1 Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0332
Mfr. Part No.88827185
BrandCrouzet
kr 691,02
Each
Units
24 V dc, 24 → 240 V ac 0.1 s → 100 h Flip Flop, Impulse Counter, ON Delay, Safe Guard, Timed Impulse Relay DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 459-4363
Mfr. Part No.CT3-E30 / H
BrandReleco
kr 844,06
Each
Units
90 → 265 V ac/dc 0.2 → 30 min, 0.2 → 30 s ON Delay Plug In Single - - Minutes, Seconds External - - 11-Pin Connector 90 V ac/dc 265 V ac/dc
RS Stock No. 687-6092
Mfr. Part No.H5CX-A-N
BrandOmron
kr 2 236,00
Each
Units
100 → 240 V ac 0.001 s → 9999 h Cumulative, Interval, ON/OFF Duty Adjustable Flicker, Power ON Delay I, Power ON Delay II Repeat Cycle I, Repeat Cycle II, Signal OFF Delay, Signal ON Delay I, Signal ON Delay II, Stopwatch Panel Mount Multi Function 1 H5CX Hours, Seconds External - - Screw - -
RS Stock No. 392-7188
Mfr. Part No.3RP1574-1NP30
BrandSiemens
kr 1 226,31
Each
Units
200 → 240 V 1 → 20 s WYE Delta - Single 2 - Seconds External SPDT - Screw - -
RS Stock No. 328-358
Mfr. Part No.H3CR-A8 AC100-240/DC100-125
BrandOmron
kr 806,00
Each
Units
100 → 125 V dc, 100 → 240 V ac 0.05 s → 300 h Flicker ON Start, Interval, ON Delay, One Shot DIN Rail, Flush Mount, Surface Mount Multi Function 2 H3CR Hours, Seconds External - 5 A 8-Pin Connector - 125 V dc, 250 V ac
RS Stock No. 459-4442
Mfr. Part No.CT3-A30 / U
BrandReleco
kr 1 086,63
Each
Units
180 → 265 V ac/dc 0.2 → 30 min, 0.2 → 30 s Switch OFF Delay Plug In Single - - Minutes, Seconds External - - 11-Pin Connector 180 V ac/dc 265 V ac/dc
RS Stock No. 459-4357
Mfr. Part No.CT3-E30 / L
BrandReleco
kr 843,76
Each
Units
20 → 65 V ac/dc 0.2 → 30 min, 0.2 → 30 s ON Delay Plug In Single - - Minutes, Seconds External - - 11-Pin Connector 20 V ac/dc 65 V ac/dc
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