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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Omschrijving Prijs 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-stocknr. 392-7223
Fabrikantnummer3RP1505-1BP30
FabrikantSiemens
€ 184,50
Each
Aantal stuks
24 V ac, 24 V dc, 200 → 240 V ac 0.5 → 10 s - - Multi Function - - Seconds External DPDT - Screw - -
RS-stocknr. 896-6810
FabrikantRS PRO
€ 23,41
Each
Aantal stuks
24 V ac/dc, 240 V ac 0.3 s → 30 h ON Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS-stocknr. 349-1285
FabrikantnummerH3YN-2 AC100-120
FabrikantOmron
€ 53,20
Each
Aantal stuks
100 120 V ac 0.1 s 10 min Flicker OFF Start, Flicker ON Start, Interval, ON Delay DIN Rail, Flush Mount Multi Function 2 H3YN Minutes, Seconds External - 5 A Socket - 250 V ac
RS-stocknr. 365-6987
FabrikantnummerH3DS-ML AC/DC
FabrikantOmron
€ 56,70
Each
Aantal stuks
24 → 230 V ac, 24 → 48 V dc 0.1 s → 120 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay, One Shot, Signal OFF Delay, Signal ON/OFF Delay DIN Rail Multi Function 1 EF7616. Hours, Seconds External - 5 A Screw - 30 V dc, 250 V ac
RS-stocknr. 827-8481
Fabrikantnummer822TD10H-UNI
€ 46,07
Each
Aantal stuks
12 240 V ac/dc 100 ms 10 days Interval, Memory Latch, OFF Delay, ON Delay, ON Delay & OFF Delay, One Shot, Pulse Generator, Repeat Cycle Starting with OFF, Retriggerable One Shot DIN Rail Multi Function 2 - Days, Hours, Milliseconds, Minutes, Seconds External DPDT 2 x 15 A Screw 12 V ac/dc 240 V ac/dc
RS-stocknr. 349-771
FabrikantnummerMDE20SRP30VDC
FabrikantTempatron
€ 42,20
Each
Aantal stuks
10 30 V dc 0.5 20 s ON Delay PCB Mount Single - - Seconds External - - - - -
RS-stocknr. 733-4956
FabrikantnummerH3DK-M1 AC/DC24-240
FabrikantOmron
€ 54,35
Each
Aantal stuks
24 → 240 V ac/dc 0.1 s → 1200 h Flicker OFF Start, Flicker ON Start, Interval, OFF Delay, ON Delay, ON/OFF Delay, One Shot Output DIN Rail Multi Function - H3DK Hours, Minutes, Seconds - SPDT 5 A Screw 24 V 30 V dc, 250 V ac
RS-stocknr. 536-2779
FabrikantRS PRO
€ 22,50
Each
Aantal stuks
250 V ac 0 → 120 min - Panel Mount - - - - External - - - - -
RS-stocknr. 236-1307
FabrikantnummerH3YN-2 AC24
FabrikantOmron
€ 53,20
Each
Aantal stuks
24 V ac 0.1 s → 10 min Flicker OFF Start, Flicker ON Start, Interval, ON Delay DIN Rail, Flush Mount Multi Function 2 H3YN Minutes, Seconds External - 5 A Socket - 250 V ac
RS-stocknr. 296-2376
FabrikantnummerETR4-70-A
FabrikantEaton
€ 155,24
Each
Aantal stuks
24 → 240 V ac/dc 0.05 s → 60 h Flash, Fleeting, OFF Delay, ON Delay, Pulse Former, Pulse Generator DIN Rail Multi Function 2 ETR4 Hours, Seconds External DPDT 6 A Screw 12 V ac/dc 240 V ac/dc
RS-stocknr. 897-6728
FabrikantnummerRE22R1MYMR
€ 70,30
Each
Aantal stuks
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-stocknr. 897-6722
FabrikantnummerRE22R1MLMR
€ 70,30
Each
Aantal stuks
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-stocknr. 392-7239
Fabrikantnummer3RP1505-1AP30
FabrikantSiemens
€ 162,00
Each
Aantal stuks
24 V ac, 24 V dc, 200 → 240 V ac 0.5 → 10 s - - Multi Function - - Seconds External SPDT - Screw - -
RS-stocknr. 791-2745
FabrikantnummerRE17RMMU
€ 52,60
Each
Aantal stuks
24 240 V ac, 24 V dc 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-stocknr. 746-6971
Fabrikantnummer1SVR730010R3200
FabrikantABB
€ 113,40
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 746-5117
Fabrikantnummer3RP1505-1AQ30
FabrikantSiemens
€ 162,00
Each
Aantal stuks
24 V dc, 100 127 V ac 0.15 3 s - DIN Rail Multi Function 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS-stocknr. 825-4558
FabrikantnummerH3BA-NAC220V
FabrikantOmron
€ 131,69
Each
Aantal stuks
220 V ac 0.05 s → 300 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay, Signal OFF Delay, Signal ON/OFF Delay Flush Mount, Panel Mount Multi Function 2 H3BA Hours, Minutes, Seconds External DPDT 5 A PCB Pin 100 V ac 240 V ac
RS-stocknr. 759-6643
Fabrikantnummer83.02.0.240.0000
FabrikantFinder
€ 79,73
Each
Aantal stuks
24 240 V ac/dc 0.05-10 d, 0.05-10 h, 0.05-10 min, 0.05-10 s ON Delay DIN Rail Multi Function 2 83 Series Days, Hours, Minutes, Seconds External SPDT 12 A - 16.8 V ac/dc 265 V ac / V dc
RS-stocknr. 236-1341
FabrikantnummerH3YN-21 AC24
FabrikantOmron
€ 53,20
Each
Aantal stuks
24 V ac 0.1 min → 10 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay DIN Rail, Flush Mount Multi Function 2 H3YN Hours, Minutes External - 5 A Socket - 250 V ac
RS-stocknr. 489-7202
Fabrikantnummer1SVR500160R0000
FabrikantABB
€ 66,50
Each
Aantal stuks
24 240 V ac, 24 48 V dc 0.05 s 100 h Pulse Generator DIN Rail Single 1 - Hours, Seconds External SPDT 6 A Screw 12 V 250 V
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