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. 328-364
FabrikantnummerH3CR-A8 AC24-48/DC12-48
FabrikantOmron
70,75 €
Each
Aantal stuks
12 → 48 V dc, 24 → 48 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-stocknr. 857-7191
FabrikantnummerDMB01CM24
FabrikantCarlo Gavazzi
97,00 €
Each
Aantal stuks
24 240 V ac, 24 V dc 0.1 s 100 h Delay On, Delay On Release, Double Interval, Interval, Interval On Trigger Open, Symmetrical Recycler Off, Symmetrical Recycler On DIN Rail Multi Function 2 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS-stocknr. 828-5177
FabrikantnummerLRTM/2 12-230V AC/DC
FabrikantBroyce Control
68,61 €
Each
Aantal stuks
12 → 230 V ac/dc 0.1 s → 100 h Delayed Pulse Function, Recycling On/Off DIN Rail Dual Function 2 - Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 265 V ac/dc
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. 746-7047
Fabrikantnummer1SVR740020R3100
FabrikantABB
115,00 €
Each
Aantal stuks
24 240 V ac, 24 48 V dc 0.05 s 300 h Accumulative ON Delay, Flash Start with OFF, Flash Start with ON, Impulse OFF with Auxiliary Voltage, Impulse ON, OFF Delay with Auxiliary Voltage, ON Delay, Pulse Former, Symmetrical OFF Delay, Symmetrical ON Delay DIN Rail Multi Function 1 - Hours, Seconds External SPDT 4 A Push In 12 V 300 V ac
RS-stocknr. 666-7937
Fabrikantnummer38.21.0.012.0060
FabrikantFinder
31,79 €
Each
Aantal stuks
12 V ac/dc 0.1 s 6 h ON Delay, ON Pulse DIN Rail Multi Function - 38 Series Hours, Seconds External - 10 A Screw 250 V ac 400 V ac
RS-stocknr. 188-4629
FabrikantnummerH3CRH8LAC200240M
FabrikantOmron
104,60 €
Each
Aantal stuks
200 → 240 V ac 0.05 → 12 min OFF Delay DIN Rail, Flush Mount, Surface Mount Single 2 H3CR Minutes, Seconds External - 5 A 8-Pin Connector - 30 V dc, 250 V ac
RS-stocknr. 791-2727
FabrikantnummerRE17RHMU
40,25 €
Each
Aantal stuks
24 240 V ac, 24 V dc 0.1 s 100 h ON Pulse DIN Rail Multi Function 1 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS-stocknr. 397-1220
FabrikantnummerH3DS-XL
FabrikantOmron
40,80 €
Each
Aantal stuks
24 230 V ac/dc 0.1 s 120 h ON Delay DIN Rail Single 1 H3DS Hours, Seconds External - 5 mA Screw - -
RS-stocknr. 442-9398
Fabrikantnummer1SVR550217R4100
FabrikantABB
50,00 €
Each
Aantal stuks
24 V ac/dc, 200 240 V ac 0.3 30 s ON Delay DIN Rail Single 2 - Seconds External SPDT 4 A - - 250 V
RS-stocknr. 329-216
FabrikantnummerXT-S1
59,33 €
Each
Aantal stuks
10.5 → 265 V ac/dc 0.6 sec → 60 mins Asymmetrical Recycler with Pause Start, Asymmetrical Recycler with Pulse Start Plug In Multi Function 1 XT-S1 Hours, Minutes External SPDT 8 A 11-Pin Connector 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS-stocknr. 734-9034
FabrikantnummerA9E16067
143,00 €
Each
Aantal stuks
24 240 V ac, 24 V dc 0.1 360000 s - DIN Rail - 2 Acti9 Seconds - SPDT 8 A Conduit 5 V dc 250 V ac/dc
RS-stocknr. 828-5151
FabrikantnummerLMMT/2 12-230V AC/DC
FabrikantBroyce Control
37,18 €
Each
Aantal stuks
12 → 230 V ac/dc 0.1 s → 100 h Delay Off (DN), Delay On (DO), Delay On (DOb), Interval (IN), Interval Leading (INb), Interval Trailing (INa), Symmetrical Recycler OFF/ON (RF) DIN Rail Multi Function 2 - Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 265 V ac/dc
RS-stocknr. 896-8676
FabrikantnummerRE22R2AMR
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 ON Delay DIN Rail Single 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS-stocknr. 188-4584
FabrikantnummerH3CR-F8 AC100-240
FabrikantOmron
114,90 €
Each
Aantal stuks
100 → 240 V ac 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-stocknr. 872-5805
FabrikantnummerRE22R2AMU
54,00 €
Each
Aantal stuks
24 240 V ac, 24 V dc 0.1 s 100 h ON Delay DIN Rail Multi Function 4 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw - -
RS-stocknr. 260-448
FabrikantnummerXM-D2
58,03 €
Each
Aantal stuks
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 2 XM-D2 Minutes External DPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS-stocknr. 791-2708
FabrikantnummerRE17LAMW
46,50 €
Each
Aantal stuks
24 240 V ac/dc 0.1 s 100 h ON Delay DIN Rail Single - RE17 Hours, Minutes, Seconds - - 20 A Screw 24 V ac/dc 240 V ac/dc
RS-stocknr. 236-1357
FabrikantnummerH3YN-21 AC200-230
FabrikantOmron
53,20 €
Each
Aantal stuks
200 230 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. 536-2555
FabrikantRS PRO
27,55 €
Each
Aantal stuks
- 0 30 min - Panel Mount - - - - External - - - - -
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