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. 791-2711
Mfr. Part No.RE17RAMU
SGD59.53
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h ON Delay DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 328-358
Mfr. Part No.H3CR-A8 AC100-240/DC100-125
BrandOmron
SGD120.92
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. 308-0784
Mfr. Part No.XMW-D1
SGD98.60
Each
units
10.5 → 265 V ac/dc 0 → 60 min, 0 → 60 s Asymmetrical Recycler with Pause Start, Asymmetrical Recycler with Pulse Start, Delay Pulse, OFF Pulse, ON Delay, ON Pulse, ON Pulse with Control Switch, One Shot Asymmetrical with Control Switch, One Shot Asymmetrical without Control Switch, Release Delay, Release True OFF Delay, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start DIN Rail Multi Function 1 XMW-D1 Seconds External SPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS Stock No. 814-8447
Mfr. Part No.821TD10H-UNI
SGD114.90
Each
units
12 → 240 V ac/dc 0.1 s → 10 Day Interval DIN Rail Multi Function 3 - Days, Hours, Minutes, Seconds Internal SPDT 15 A PCB Pin 12 V ac/dc 240 V ac/dc
RS Stock No. 113-8134
Mfr. Part No.H3CR-A AC100-240/DC100-125
BrandOmron
SGD120.92
Each
units
100 → 125 V dc, 100 → 240 V ac 0.05 s → 300 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay, One Shot, Signal OFF Delay, Signal ON/OFF Delay DIN Rail, Flush Mount, Surface Mount Multi Function 2 H3CR Hours, Seconds External - 5 A 11-Pin Connector - 125 V dc, 250 V ac
RS Stock No. 459-4420
Mfr. Part No.CT3-A30 / L
BrandReleco
SGD164.18
Each
units
20 → 65 V ac/dc 0.2 → 30 min, 0.2 → 30 s Switch OFF Delay Plug In Single - - Minutes, Seconds External - - 11-Pin Connector 20 V ac/dc 65 V ac/dc
RS Stock No. 459-4329
Mfr. Part No.CT2-E30 / L
BrandReleco
SGD122.42
Each
units
20 → 65 V ac/dc 0.2 → 30 min, 0.2 → 30 s ON Delay Plug In Single - - Minutes, Seconds External - - 8-Pin Connector 20 V ac/dc 65 V ac/dc
RS Stock No. 791-2723
Mfr. Part No.RE17RCMU
SGD59.63
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h OFF Delay DIN Rail Single 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS Stock No. 442-9297
Mfr. Part No.1SVR550029R8100
BrandABB
SGD104.75
Each
units
24 → 240 V ac/dc 0.05 s → 100 h Flash Start with OFF, Flash Start with ON, Impulse ON, OFF Delay, ON Delay, Pulse Former DIN Rail Multi Function 1 - Hours, Seconds External SPDT 4 A Screw - 250 V ac/dc
RS Stock No. 349-1279
Mfr. Part No.H3CR-H8L AC100-120 M
BrandOmron
SGD133.29
Each
units
100 → 120 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 Stock No. 392-7188
Mfr. Part No.3RP1574-1NP30
BrandSiemens
SGD137.09
Each
units
200 → 240 V 1 → 20 s WYE Delta - Single 2 - Seconds External SPDT - Screw - -
RS Stock No. 774-0304
Mfr. Part No.88827105
BrandCrouzet
SGD80.22
Each
units
24 V dc, 24 → 240 V ac 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 Screw - -
RS Stock No. 328-364
Mfr. Part No.H3CR-A8 AC24-48/DC12-48
BrandOmron
SGD120.92
Each
units
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 Stock No. 328-386
Mfr. Part No.H3CR-A8E AC/DC24-48
BrandOmron
SGD123.92
Each
units
24 → 48 V ac/dc 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. 812-7853
Mfr. Part No.S1DXM-M2C60M-DC24V
BrandPanasonic
SGD63.07
Each
units
24 V dc 0.5 s → 60 min Flicker OFF Start, Flicker ON Start, One Shot, Power ON Delay Panel Mount Multi Function 2 S1DXM Minutes, Seconds External - 40 mA Socket 19.2 V dc 26.4 V dc
RS Stock No. 774-0314
Mfr. Part No.88827145
BrandCrouzet
SGD59.63
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h Interval DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 774-0310
Mfr. Part No.88827135
BrandCrouzet
SGD71.92
Each
units
24 V dc, 24 → 240 V ac 0.1 s → 100 h OFF Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS Stock No. 308-0790
Mfr. Part No.XMW-S1
SGD88.31
Each
units
10.5 → 265 V ac/dc 0.6 min → 60 h, 0.6 s → 60 min Asymmetrical Recycler with Pause Start, Asymmetrical Recycler with Pulse Start, Delay Pulse, OFF Pulse, ON Delay, ON Pulse, ON Pulse with Control Switch, One Shot Asymmetrical with Control Switch, One Shot Asymmetrical without Control Switch, Release Delay, Release True OFF Delay, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start Plug In Multi Function 1 XMW-S1 Hours, Minutes External SPDT 8 A 11-Pin Connector 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS Stock No. 160-228
Mfr. Part No.G2ZMF11 24-240VAC/DC
BrandTele
SGD156.00
Each
units
24 → 240 V ac/dc 50 ms → 30 days Flash Pause First, Flash Pulse First, OFF Delay with Control Input, ON Delay, ON Delay with Control Contact, One Shot Leading Edge Voltage Controlled, One Shot Leading Edge with Control Input, One Shot Trailing Edge with Control Input DIN Rail Multi Function 2 G2ZMF11 Days, Hours, Milliseconds, Minutes, Seconds External DPDT 5 A - - 250 V ac
RS Stock No. 489-7202
Mfr. Part No.1SVR500160R0000
BrandABB
SGD128.12
Each
units
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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