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 897-6722
製造零件編號RE22R1MLMR
HK$772.39
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 340-538
製造零件編號H3Y-4 AC100-120 10S
BrandOmron
HK$851.36
單位
100 → 120 V ac 0.5 → 10 s ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Seconds External - 5 A - - 250 V ac
RS庫存編號 188-4613
製造零件編號H3CR-H8L AC/DC24 M
BrandOmron
HK$851.45
單位
24 V ac/dc 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庫存編號 225-8318
製造零件編號031891 & ETR4-69-A
BrandEaton
HK$1,279.39
單位
24 → 240 V ac/dc 0.05s → 100h Flash, Fleeting, OFF Delay, ON Delay, Pulse Former, Pulse Generator DIN Rail Multi Function 1 ETR4 Hours, Seconds External SPDT 3 A Screw 24 V ac/dc 240 V dc, 400 V ac
RS庫存編號 160-228
製造零件編號G2ZMF11 24-240VAC/DC
BrandTele
HK$1,140.35
單位
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庫存編號 714-0023
製造零件編號V0DDTS1
BrandGIC
HK$444.45
單位
24 → 240 V ac/dc 0.1 s → 999 h Cyclic OFF/ON, Cyclic ON/OFF, Interval, ON Delay, One Shot Output, Signal OFF Delay, Signal OFF/ON, Signal ON/OFF DIN Rail Multi Function 1 - Hours, Seconds - SPDT 2 (dc) A, 3 (ac) A Screw 125 V ac/dc 240 V ac, 250 V dc
RS庫存編號 746-6987
製造零件編號1SVR730020R3300
BrandABB
HK$1,111.40
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 340-623
製造零件編號H3Y-4 AC200-230 60S
BrandOmron
HK$878.25
單位
200 → 230 V ac 2 → 60 s ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Seconds External - 5 A - - 250 V ac
RS庫存編號 225-8267
製造零件編號031882 & ETR4-11-A
BrandEaton
HK$876.53
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 217-1390
製造零件編號TT4802-11
BrandTempatron
HK$856.06
單位
230 V ac 3 s → 30 m True OFF Delay Deenergise Panel Mount, Plug In Single 2 - Minutes, Seconds External DP-NO/NC 5 A 11-Pin Connector - 30 V dc, 230 V ac
RS庫存編號 340-544
製造零件編號H3Y-4 AC100-120 30S
BrandOmron
HK$878.25
單位
100 → 120 V ac 1 → 30 s ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Seconds External - 5 A - - 250 V ac
RS庫存編號 782-1573
製造零件編號7012AH
HK$4,303.31
單位
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS庫存編號 914-4597
製造零件編號LEDO/2 12-230V AC/DC
HK$324.79
單位
12 → 230 V ac/dc 0.1 s → 100 h ON Delay DIN Rail - 2 - Hours, Minutes, Seconds External DPDT 8 A Screw 12 V ac/dc 230 V ac/dc
RS庫存編號 914-8192
製造零件編號REXL2TMBD
HK$340.18
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 914-8215
製造零件編號REXL4TMF7
HK$429.42
單位
110 V ac 0.1 s → 100 h Electromechanical Plug In Multi Function 4 - Hours, Minutes, Seconds - - 3 A - - -
RS庫存編號 746-5126
製造零件編號3RP1505-1BW30
BrandSiemens
HK$1,414.24
單位
24 → 240 V ac/dc 0.5 → 10 min - DIN Rail Multi Function 2 - Minutes External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS庫存編號 684-3664
製造零件編號2917421
HK$612.67
單位
19.2 → 30 V dc 3 → 300 s ON Delay with Control Contact DIN Rail Single 1 ETD-BL-1T-ON-CC-300S Seconds External - 6.3 A Screw - -
RS庫存編號 774-0326
製造零件編號88827503
BrandCrouzet
HK$748.86
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 812-7904
製造零件編號PM4HM-H-AC240VW
BrandPanasonic
HK$552.78
單位
100 → 240 V ac 1 s → 500 h One Shot, Power Flicker, Power ON Delay, Power One Cycle Flush Mount Multi Function 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
RS庫存編號 308-1579
製造零件編號TE48ML
BrandTempatron
HK$1,901.10
單位
12 → 24 V ac/dc 0.1 → 999.9 s, 1 → 9999 min, 1 → 99:59 h Cycle Time Monitor, Delay Cycle, Delay Pulse, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval, Sequence Panel Mount Multi Function 2 - Hours, Minutes, Seconds External SPDT, SPNO - - - 26.4 V ac/dc