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庫存編號 349-888
製造零件編號2BDE200SLP240VAC
BrandTempatron
HK$514.85
單位
240 V ac 5 → 200 s ON Delay Energise Plug In Single 2 - Seconds External DP-NO/NC 10 A 8-Pin Connector - -
RS庫存編號 221-086
製造零件編號80.11.0.240.0000
BrandFinder
HK$501.79
單位
24 → 240 V ac/dc 0.1 → 20 min, 0.1 → 20 s, 0.1 → 24 h ON Delay DIN Rail Single 1 80 Series Hours, Minutes, Seconds External SPDT 16 A Screw 16.8 V ac/dc 265 V ac/dc
RS庫存編號 782-1573
製造零件編號7012AH
HK$6,247.64
單位
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS庫存編號 746-3874
製造零件編號H5CN-YDN AC100-240
BrandOmron
HK$1,879.52
單位
24 V ac, 100 → 240 V ac 1 min → 99 h 59 min ON Delay DIN Track, Panel Mount, Surface Mount Single 1 - Hours, Minutes External - 3 A 8-Pin Socket 5 V dc 250 V ac
RS庫存編號 746-6987
製造零件編號1SVR730020R3300
BrandABB
HK$839.21
單位
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, Star Delta Changeover with Impulse, Symmetrical OFF Delay, Symmetrical ON Delay DIN Rail, Snap Multi Function 2 - Hours, Seconds External DPDT 4 A Screw 12 V 300 V ac
RS庫存編號 733-4956
製造零件編號H3DK-M1 AC/DC24-240
BrandOmron
HK$452.54
單位
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庫存編號 225-8267
製造零件編號ETR4-11-A
BrandEaton
HK$702.02
單位
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庫存編號 914-8192
製造零件編號REXL2TMBD
HK$453.94
單位
24 V dc 0.1 s → 100 h Electromechanical Plug In Multi Function 2 - Hours, Minutes, Seconds - - 5 A - - -
RS庫存編號 774-0326
製造零件編號88827503
BrandCrouzet
HK$594.00
單位
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庫存編號 746-5139
製造零件編號3RP1505-2AW30
BrandSiemens
HK$1,113.00
單位
24 → 240 V ac/dc 1.5 → 30 s - DIN Rail Multi Function 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Cage Clamp 24 V ac/dc 250 V dc, 400 V ac
RS庫存編號 340-651
製造零件編號H3Y-4 AC200-230 10M
BrandOmron
HK$377.22
單位
200 → 230 V ac 0.5 → 10 min ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Minutes External - 5 A - - 250 V ac
RS庫存編號 236-1385
製造零件編號H3YN-4 DC24
BrandOmron
HK$437.72
單位
24 V dc 0.1 s → 10 min Flicker OFF Start, Flicker ON Start, Interval, ON Delay DIN Rail, Flush Mount Multi Function 4 H3YN Minutes, Seconds External - 3 A Socket - 250 V ac
RS庫存編號 774-0332
製造零件編號88827185
BrandCrouzet
HK$524.44
單位
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庫存編號 897-6722
製造零件編號RE22R1MLMR
HK$812.72
單位
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庫存編號 759-6652
製造零件編號83.62.0.240.0000
BrandFinder
HK$848.56
單位
24 → 240 V ac/dc 0.05-180 s Power OFF Delay DIN Rail Single 2 83 Series Seconds External SPDT 8 A - 16.8 V ac/dc 265/242 V ac / V dc
RS庫存編號 897-6728
製造零件編號RE22R1MYMR
HK$669.28
單位
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庫存編號 159-593
製造零件編號80.71.0.240.0000
BrandFinder
HK$610.00
單位
24 → 240 V ac/dc 0.1 → 20 min, 0.1 → 20 s, 0.1 → 24 h Interval, Interval with Control Signal On, Off Delay with Control Signal, On Delay, On/Off Delay with Control Signal, Symmetrical Flasher DIN Rail Multi Function 1 80 Series Hours, Minutes, Seconds External SPNO 1 A Screw 19 V ac/dc 265 V ac/dc
RS庫存編號 791-2745
製造零件編號RE17RMMU
HK$440.00
單位
24 V dc, 24 → 240 V ac 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庫存編號 831-6025
製造零件編號3RP2512-2AW30
BrandSiemens
HK$433.08
單位
12 → 240 V ac/dc 1.5 → 30 s ON Delay - Single 1 - Seconds - SPDT - Cage Clamp 12 V ac/dc 240 V ac/dc
RS庫存編號 798-3536
製造零件編號V2ZA10 3MIN 24-240V AC/DC
BrandTele
HK$623.05
單位
24 → 240 V ac/dc 0.1 → 1 s, 1 → 10 s, 6 → 60 s, 18 → 180 s Maintained Single Shot Leading and Trailing Edge, Maintained Single Shot Leading Edge, Maintained Single Shot Trailing Edge, OFF Delay without auxiliary voltage, ON Delay DIN Rail Multi Function 1 V2ZA10 - Internal SPDT 5 (AC-1) A Screw - -