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 340-544
製造零件編號H3Y-4 AC100-120 30S
BrandOmron
HK$474.99
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 746-5139
製造零件編號3RP1505-2AW30
BrandSiemens
HK$1,562.02
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 808-8676
製造零件編號H3CR-F8N AC24-48/DC12-48
BrandOmron
HK$990.47
單位
12 → 48 V dc, 24 → 48 V ac - Flicker ON Start DIN Rail Multi Function - H3CR - - - - 8-Pin Connector 12 V dc, 24 V ac 48 V ac/dc
RS庫存編號 896-8670
製造零件編號RE22R1HMR
HK$629.20
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 Interval 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 260-448
製造零件編號XM-D2
HK$549.67
單位
10.5 → 265 V ac/dc 0.6 → 60 min ON Delay, ON Pulse, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start DIN Rail Multi Function 2 XM-D2 Minutes External DPDT 8 A Screw 10.5 V ac/dc, 24 V dc 265 V ac/dc
RS庫存編號 340-623
製造零件編號H3Y-4 AC200-230 60S
BrandOmron
HK$1,012.65
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 225-8318
製造零件編號ETR4-69-A
BrandEaton
HK$1,217.67
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 340-639
製造零件編號H3Y-4 AC200-230 3M
BrandOmron
HK$474.99
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 340-645
製造零件編號H3Y-4 AC200-230 5M
BrandOmron
HK$474.99
單位
200 → 230 V ac 0.2 → 5 min ON Delay DIN Rail, Surface Mount Single 4 H3Y-4 Minutes External - 5 A - - 250 V ac
RS庫存編號 113-8128
製造零件編號H3CR-A AC24-48/DC12-48
BrandOmron
HK$982.00
單位
12 → 48 V dc, 24 → 48 V ac 0.05 s → 300 h Flicker OFF Start, Flicker ON Start, Interval, ON Delay, One Shot, Signal OFF Delay, Signal ON/OFF Delay DIN Rail, Flush Mount, Surface Mount Multi Function 2 H3CR Hours, Seconds External - 5 A 11-Pin Connector - 125 V dc, 250 V ac
RS庫存編號 442-9297
製造零件編號1SVR550029R8100
BrandABB
HK$637.09
單位
24 240 V ac/dc 0.05 s 100 h Flash Start with OFF, Flash Start with ON, Impulse ON, OFF Delay, ON Delay, Pulse Former DIN Rail Multi Function 1 - Hours, Seconds External SPDT 4 A Screw - 250 V ac/dc
RS庫存編號 759-6652
製造零件編號83.62.0.240.0000
BrandFinder
HK$865.53
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 798-3511
製造零件編號V2ZE10 24-240V AC/DC
BrandTele
HK$351.44
單位
24 240 V ac/dc 0.05 1 s, 0.15 3 s, 0.5 10 h, 0.5 10 min, 0.5 10 s, 1.5 30 s, 3 60 min, 3 60 s, 5 100 h, 9 180 s Interval DIN Rail Single 1 V2ZE10 - Internal SPDT 0.1 (DC-13) A, 1.5 (AC-15) A, 8 (AC-1) A, 8 (DC-12) A Screw - -
RS庫存編號 812-7888
製造零件編號PM4HS-H-AC240V
BrandPanasonic
HK$395.91
單位
100 240 V ac 1 s 500 h Power ON Delay Flush Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
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 442-9398
製造零件編號1SVR550217R4100
BrandABB
HK$486.77
單位
24 V ac/dc, 200 240 V ac 0.3 30 s ON Delay DIN Rail Single 2 - Seconds External SPDT 4 A - - 250 V
RS庫存編號 236-1357
製造零件編號H3YN-21 AC200-230
BrandOmron
HK$401.43
單位
200 230 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 872-5811
製造零件編號RE22R2MMW
HK$755.04
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 897-6728
製造零件編號RE22R1MYMR
HK$695.23
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 791-2745
製造零件編號RE17RMMU
HK$494.40
單位
24 240 V ac, 24 V dc 0.1 s 100 h - DIN Rail Multi Function 2 RE17 Hours, Minutes, Seconds - SPDT 8 A Screw - 24 V dc, 240 V ac