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 237-8793
製造零件編號TT32ML
BrandTempatron
HK$990.17
單位
12 → 24 V ac/dc 0 → 99:59 h, 0.1 → 999.9 s, 1 → 99:59 min Cycle, Dependent ON Delay Energise, Interval, ON Delay Deenergise, ON Delay Energise, ON Delay Energise & Interval, Pulse Delay, 24 Hour Clock Panel Mount Multi Function 2 - Hours, Minutes, Seconds External SPNC, SPNO - - - 30 V dc
RS庫存編號 329-200
製造零件編號XW-S1
HK$499.31
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 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 746-5139
製造零件編號3RP1505-2AW30
BrandSiemens
HK$1,569.44
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 340-538
製造零件編號H3Y-4 AC100-120 10S
BrandOmron
HK$896.17
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 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 896-6826
BrandRS PRO
HK$275.92
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 897-6728
製造零件編號RE22R1MYMR
HK$716.09
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 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 446-0327
製造零件編號80.01.0.240.0000
BrandFinder
HK$654.49
單位
12 → 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 & OFF Delay with Control Signal, ON Delay, Symmetrical Flash (Starting Pulse ON) DIN Rail Multi Function 1 80 Series Hours, Minutes, Seconds External SPDT 16A Screw 250 V ac 400 V ac
RS庫存編號 872-5811
製造零件編號RE22R2MMW
HK$758.63
單位
12 → 240 V ac/dc 0.1 s → 100 h Multi Function DIN Rail Multi Function 4 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw - 250 V
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 684-3664
製造零件編號2917421
HK$625.17
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 349-1291
製造零件編號H3YN-21 AC100-120
BrandOmron
HK$745.23
單位
100 → 120 V ac 0.1 min → 10 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay DIN Rail, Flush Mount Multi Function 2 H3YN Hours, Minutes External - 5 A Socket - 250 V ac
RS庫存編號 746-5120
製造零件編號3RP1505-1RW30
BrandSiemens
HK$2,259.51
單位
24 → 240 V ac/dc 0.05 → 1 h - DIN Rail Multi Function 2 - Seconds External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS庫存編號 340-544
製造零件編號H3Y-4 AC100-120 30S
BrandOmron
HK$896.17
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 340-639
製造零件編號H3Y-4 AC200-230 3M
BrandOmron
HK$477.24
單位
200 → 230 V ac 0.1 → 3 min ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Minutes External - 5 A - - 250 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 914-4597
製造零件編號LEDO/2 12-230V AC/DC
HK$315.33
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 340-4887
製造零件編號B1MFT 24VAC/DC/230VAC 2-60 MI
HK$394.22
單位
24 V ac/dc, 230 V ac 0.25 → 60 min, 0.5 → 60 s Interval, ON Delay, Symmetrical OFF/ON Repeat Cycle, Symmetrical ON/OFF Repeat Cycle Plug In Multi Function 2 - Minutes, Seconds External DPDT 8 A - - 25 V dc, 250 V ac