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 896-8698
製造零件編號RE22R2KMR
HK$965.53
單位
24 240 V ac/dc 0.3 300 s OFF Delay DIN Rail Single 2 RE22 R2 Seconds External DPDT 5 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 106-6239
製造零件編號H3DT-A2
BrandOmron
HK$513.00
單位
24 240 V ac/dc 0.1 s 100 h ON Delay DIN Rail Single 4 H3DT - External DPDT 5 A Screw - 30 V dc, 250 V ac
RS庫存編號 897-6740
製造零件編號RE22R2QEMR
HK$514.80
單位
24 240 V ac/dc 0.3 30 s Star Delta DIN Rail Single 2 RE22 R2 Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 185-097
製造零件編號1SVR500110R0100 - CT-AHD.22
BrandABB
HK$845.91
單位
24 240 V ac, 24 48 V dc 0.05 s 100 h OFF Delay DIN Rail Single 2 - Hours, Seconds External DPDT 6 A - 12 V 250 V
RS庫存編號 897-6725
製造零件編號RE22R2MYMR
HK$815.67
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, ON Delay DIN Rail Multi Function 2 RE22 R2 Hours, Minutes, Seconds External DPDT 8 A Screw 24 V ac/dc 240 V ac/dc
RS庫存編號 470-787
製造零件編號2866161
HK$1,157.76
單位
24 240 V ac/dc 50 ms 100 h Flash Start with Pause, Flash Start with Pulse, One Shot Leading Edge, One Shot Leading Edge with Control Contact, One Shot Trailing Edge with Control Contact, Release Delay with Control Contact, Switch ON Delay, Switch ON Delay with Control Contact, Voltage Controlled DIN Rail Multi Function 2 ETD-SL-1T-DTF Hours, Milliseconds External - 5 A Screw - 250 V
RS庫存編號 774-0308
製造零件編號88827115
BrandCrouzet
HK$432.86
單位
24 240 V ac, 24 V dc 0.1 s 100 h ON Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS庫存編號 759-6646
製造零件編號83.11.0.240.0000
BrandFinder
HK$407.39
單位
24 240 V ac/dc 0.05-10 d, 0.05-10 h, 0.05-10 min, 0.05-10 s ON Delay DIN Rail Single 1 83 Series Days, Hours, Minutes, Seconds External SPDT 16 A - 16.8 V ac/dc 265 V ac / V dc
RS庫存編號 489-7173
製造零件編號1SVR500110R0000
BrandABB
HK$531.66
單位
24 240 V ac, 24 48 V dc 0.05 s 100 h OFF Delay DIN Rail Single 1 - Hours, Seconds External SPDT 6 A Screw 12 V 250 V
RS庫存編號 774-0317
製造零件編號88827125
BrandCrouzet
HK$475.46
單位
24 240 V ac, 24 V dc 0.1 s 100 h ON Pulse Timer DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 8 A Screw - -
RS庫存編號 106-6237
製造零件編號H3DT-N1
BrandOmron
HK$535.29
單位
24 → 240 V ac/dc 0.1 s → 100 h Delay OFF, Delay ON, Flicker OFF Start, Flicker ON Start, Interval DIN Rail Multi Function 2 H3DT - External SPDT 5 A Screw - 30 V dc, 250 V ac
RS庫存編號 746-5136
製造零件編號3RP1525-1AQ30
BrandSiemens
HK$932.59
單位
24 V dc, 100 127 V ac 0.05 1 s ON Delay DIN Rail Single 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS庫存編號 827-3436
製造零件編號RUW101MW
HK$758.63
單位
- - Multi Function Plug In Multi Function - - - - - - - 24 V ac/dc 240 V ac/dc
RS庫存編號 308-0784
製造零件編號XMW-D1
HK$1,014.61
單位
10.5 → 265 V ac/dc 0 → 60 min, 0 → 60 s Asymmetrical Recycler with Pause Start, Asymmetrical Recycler with Pulse Start, Delay Pulse, OFF Pulse, ON Delay, ON Pulse, ON Pulse with Control Switch, One Shot Asymmetrical with Control Switch, One Shot Asymmetrical without Control Switch, Release Delay, Release True OFF Delay, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start DIN Rail Multi Function 1 XMW-D1 Seconds External SPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS庫存編號 160-262
製造零件編號E1ZMQ10 24-240V AC/DC
BrandTele
HK$298.63
單位
24 → 240 V ac/dc 50 ms → 100 h Flash Pause First, OFF Delay, ON Delay, One Shot Leading Edge Voltage Controlled DIN Rail Multi Function 1 E1ZMQ10 Hours, Milliseconds, Minutes, Seconds External SPDT 8 A - - 250 V ac
RS庫存編號 914-8198
製造零件編號REXL2TMB7
HK$526.24
單位
24 V ac 0.1 s → 100 h Electromechanical Plug In Multi Function 2 - Hours, Minutes, Seconds - - 5 A - - -
RS庫存編號 159-600
製造零件編號85.04.0.125.0000
BrandFinder
HK$379.01
單位
110 125 V ac/dc 0.05 100s, 0.5 100min Interval, On Delay, Pulse Delayed, Symmetrical Flasher Plug In Multi Function 4 85 Series Hours, Minutes, Seconds External 4PDT 7 A 14-Pin Connector 93.5 V ac/dc 137.5 V ac/dc
RS庫存編號 729-8976
製造零件編號GT5P-N10SAD24 (HK)
BrandIdec
HK$2,404.56
單位
24 V ac/dc 10 s ON Delay DIN Rail Single 8 - Seconds External - 5 A - 120 V ac 240 V ac
RS庫存編號 791-2727
製造零件編號RE17RHMU
HK$327.55
單位
24 240 V ac, 24 V dc 0.1 s 100 h ON Pulse DIN Rail Multi Function 1 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw 24 V ac 24 V dc, 240 V ac
RS庫存編號 221-086
製造零件編號80.11.0.240.0000
BrandFinder
HK$528.28
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