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 329-200
製造零件編號XW-S1
HK$496.95
單位
10.5 → 265 V ac/dc 0.6 → 60 min, 0.6 → 60 s ON Pulse without Control Switch Plug In Multi Function 1 XW-S1 Minutes, Seconds External SPDT 8 A 11-Pin Connector 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS庫存編號 812-7958
製造零件編號PMH-10M-DC24V
BrandPanasonic
HK$561.70
單位
24 V dc 0.05 s → 10 min ON Delay Flush Mount Single 2 - Minutes, Seconds External DPDT 7 A 8-Pin Connector - -
RS庫存編號 236-1385
製造零件編號H3YN-4 DC24
BrandOmron
HK$715.28
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 896-6822
BrandRS PRO
HK$211.74
單位
24 V ac/dc, 240 V ac 0.3 s → 30 h OFF Delay DIN Rail Single 1 - Seconds External SPDT 5 A Screw - 24 V ac/dc, 240 V ac
RS庫存編號 160-228
製造零件編號G2ZMF11 24-240VAC/DC
BrandTele
HK$910.62
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 896-6826
BrandRS PRO
HK$284.27
單位
12 240 V ac/dc 0.1 s 100 h Asymmetric OFF/ON, Asymmetric ON/OFF DIN Rail Multi Function 1 - Hours, Minutes, Seconds External SPDT 8 A Screw 12 V ac/dc 240 V ac/dc
RS庫存編號 914-4597
製造零件編號LEDO/2 12-230V AC/DC
HK$306.60
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 774-0301
製造零件編號88827103
BrandCrouzet
HK$738.85
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 Screw - -
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 831-6025
製造零件編號3RP2512-2AW30
BrandSiemens
HK$476.93
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 746-3874
製造零件編號H5CN-YDN AC100-240
BrandOmron
HK$1,899.38
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 348-1963
製造零件編號H7ET-NFV-B
BrandOmron
HK$1,031.46
單位
24 → 240 V ac/dc - - Flush Mount - - H7E - - - - - - -
RS庫存編號 188-4613
製造零件編號H3CR-H8L AC/DC24 M
BrandOmron
HK$861.43
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 347-747
製造零件編號FBDE30MLP230VAC
BrandTempatron
HK$653.22
單位
230 V ac 1.5 → 30 min ON Delay Energise Panel Mount, Plug In Single 2 - Minutes External DP-NO/NC 10 A 8-Pin Connector - 30 V dc, 240 V ac
RS庫存編號 896-8692
製造零件編號RE22R1CMR
HK$563.39
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 OFF Delay 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 733-4956
製造零件編號H3DK-M1 AC/DC24-240
BrandOmron
HK$504.85
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 106-6235
製造零件編號H3DT-L1
BrandOmron
HK$532.76
單位
24 → 240 V ac/dc 0.1 s → 100 h Delay ON, Delay ON/OFF, Flicker OFF Start, Flicker ON Start, Interval, One Shot DIN Rail Multi Function 2 H3DT - External SPDT 5 A Screw - 30 V dc, 250 V ac
RS庫存編號 442-9382
製造零件編號1SVR550167R1100
BrandABB
HK$486.77
單位
24 V ac/dc, 200 240 V ac 0.1 10 s Flash DIN Rail Single 1 - Seconds External SPDT - - - -
RS庫存編號 782-1573
製造零件編號7012AH
HK$4,304.15
單位
- 3 → 30 min - Panel Mount - - - - - - 15 A Screw - 120 V ac
RS庫存編號 746-5126
製造零件編號3RP1505-1BW30
BrandSiemens
HK$1,828.62
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