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 Mounting Type Time Range Mode of Operation Number of Contacts Number of Timer Functions Series Contact Configuration Time Increment Power Supply Maximum Voltage Current Maximum Terminal Type Minimum Voltage
RS庫存編號 914-5070
製造零件編號RENF22R2MMW
HK$1,005.09
單位
12 → 240V ac/dc DIN Rail 0.1 s → 100h - 2 Multi Function Zelio DPDT Hours, Minutes, Seconds External 240V ac/dc 8A Screw 12V ac/dc
RS庫存編號 808-6623
BrandRS PRO
HK$697.73
單位
24V ac/dc Panel Mount - One Shot 1 Single - SPDT Hours, Minutes, Seconds External 24V ac/dc - - -
RS庫存編號 774-0304
製造零件編號88827105
BrandCrouzet
HK$744.11
單位
24 → 240 V ac, 24V dc DIN Rail 0.1 s → 100h Asymmetrical, Interval, OFF Delay, ON Delay, ON Pulse, Symmetrical 1 Multi Function - SPDT Hours, Minutes, Seconds External - 8A Screw -
RS庫存編號 328-364
製造零件編號H3CR-A8 AC24-48/DC12-48
BrandOmron
HK$1,053.10
單位
12 → 48 V dc, 24 → 48V ac - 0.05 s → 300h Flicker ON Start, Interval, ON Delay, One Shot 2 Multi Function H3CR - Hours, Seconds External 125 V dc, 250V ac 5A - -
RS庫存編號 456-0348
製造零件編號1SBN020010R1004 TE5S-440
BrandABB
HK$1,079.46
單位
380 → 440V ac DIN Rail 0.8 → 60s Star Delta - Single - - Seconds External 230V ac 4A Screw -
RS庫存編號 328-358
製造零件編號H3CR-A8 AC100-240/DC100-125
BrandOmron
HK$1,428.74
單位
100 → 125 V dc, 100 → 240V ac - 0.05 s → 300h Flicker ON Start, Interval, ON Delay, One Shot 2 Multi Function H3CR - Hours, Seconds External 125 V dc, 250V ac 5A - -
RS庫存編號 828-5155
製造零件編號LEDO 12-230V AC/DC
HK$330.24
單位
12 → 230V ac/dc DIN Rail 0.1 s → 100h ON Delay 1 Single - SPDT Hours, Minutes, Seconds External 265V ac/dc 8A Screw 12V ac/dc
RS庫存編號 349-1279
製造零件編號H3CR-H8L AC100-120 M
BrandOmron
HK$1,162.16
單位
100 → 120V ac - 0.05 → 12min OFF Delay 2 Single H3CR - Minutes, Seconds External 30 V dc, 250V ac 5A - -
RS庫存編號 897-6700
製造零件編號RE22R2ACMR
HK$890.11
單位
24 → 240V ac/dc DIN Rail 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 → 300s OFF Delay, ON Delay 2 Multi Function RE22 R2 DPDT Hours, Minutes, Seconds External 240V ac/dc 8A Screw 24V ac/dc
RS庫存編號 687-6109
製造零件編號H5CX-L8-N
BrandOmron
HK$1,807.04
單位
100 → 240V ac Panel Mount 0.001 s → 9999h Flicker OFF Start 1, Flicker OFF Start 2, Flicker ON Start 1, Flicker ON Start 2 1 Multi Function H5CX - Hours, Seconds External - - - -
RS庫存編號 188-4578
製造零件編號H3CR-F8 AC/DC24
BrandOmron
HK$1,083.28
單位
24V ac/dc - 0.05 s → 30h Flicker OFF 2 Single H3CR - Hours, Seconds External 30 V dc, 250V ac 5A - -
RS庫存編號 897-6738
製造零件編號RE22R1QCMU
HK$881.08
單位
24 → 240V ac/dc DIN Rail 0.05 → 300s Star Delta 1 Single RE22 R1 SPDT Seconds External 240V ac/dc 8A Screw 24V ac/dc
RS庫存編號 536-2779
BrandRS PRO
HK$378.57
單位
250V ac Panel Mount 0 → 120min - - - - - - External - - - -
RS庫存編號 791-2723
製造零件編號RE17RCMU
HK$485.41
單位
24 V dc, 24 → 240V ac DIN Rail 0.1 s → 100h OFF Delay 2 Single RE17 SPDT Hours, Minutes, Seconds - 24 V dc, 240V ac 8A Screw 24V ac
RS庫存編號 828-5158
製造零件編號LMMT 12-230V AC/DC
HK$436.78
單位
24 to 230 V ac/12 to 230V dc DIN Rail 0.1 s → 100h - 1 Multi Function - SPDT Hours, Minutes, Seconds External 265V ac/dc 8A Screw 24 Vac / 12V dc
RS庫存編號 106-6255
製造零件編號H3YN-21-B AC200-230
BrandOmron
HK$418.01
單位
200 → 230V ac Panel Mount 0.1 min → 10h Delay ON, Flicker OFF Start, Flicker ON Start 4 Multi Function H3YN DPDT Hours, Minutes External 250V ac 5A Push In -
RS庫存編號 188-4584
製造零件編號H3CR-F8 AC100-240
BrandOmron
HK$1,082.97
單位
100 → 240V ac - 0.05 s → 30h Flicker OFF 2 Single H3CR - Hours, Seconds External 30 V dc, 250V ac 5A - -
RS庫存編號 733-4953
製造零件編號H3DK-S1 AC/DC24-240
BrandOmron
HK$828.14
單位
24 → 240V ac/dc DIN Rail 0.1 s → 1200h Flicker ON Start, Interval, ON Delay, One Shot Output - Multi Function H3DK SPDT Hours, Minutes, Seconds - 30 V dc, 250V ac 5A Screw 24V
RS庫存編號 759-6643
製造零件編號83.02.0.240.0000
BrandFinder
HK$1,039.41
單位
24 → 240V ac/dc DIN Rail - ON Delay 2 Multi Function 83 Series SPDT Days, Hours, Minutes, Seconds External - 12A - 16.8V ac/dc
RS庫存編號 746-7028
製造零件編號1SVR730180R0300 CT-APS.21S
BrandABB
HK$1,195.91
單位
24 → 240V ac/dc DIN Rail 0.05 s → 300h OFF Delay 2 Single - DPDT Hours, Seconds External 300V ac 4A Screw 12V