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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Viewing 1 - 20 of 53 products
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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 Stock No. 812-7958
Mfr. Part No.PMH-10M-DC24V
BrandPanasonic
HK$526.64
Each
units
24 V dc 0.05 s → 10 min ON Delay Flush Mount Single 2 - Minutes, Seconds External DPDT 7 A 8-Pin Connector - -
RS Stock No. 812-7888
Mfr. Part No.PM4HS-H-AC240V
BrandPanasonic
HK$443.30
Each
units
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 Stock No. 812-7901
Mfr. Part No.PM4HM-H-AC240VSW
BrandPanasonic
HK$636.38
Each
units
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 Screw - -
RS Stock No. 812-7904
Mfr. Part No.PM4HM-H-AC240VW
BrandPanasonic
HK$580.44
Each
units
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 Stock No. 228-908
Mfr. Part No.LT4HW240ACSJ
BrandPanasonic
HK$879.35
Each
units
100 → 240 V ac 0 → 9999 h, 0 → 9999 min, 0 → 9999 s Delay One Shot, Flicker OFF Start, Flicker ON Start Flush Mount Multi Function - - Hours, Minutes, Seconds External - 5 A Screw - 250 V ac
RS Stock No. 812-7869
Mfr. Part No.S1DXMA2C10MAC220V
BrandPanasonic
HK$352.77
Each
units
220 V ac 0.05 s → 10 min Power ON Delay Panel Mount Single 2 S1DXM Minutes, Seconds External - 13 mA Socket 160 V ac 242 V ac
RS Stock No. 515-0683
Mfr. Part No.PM4HA-H-24VW
BrandPanasonic
HK$404.22
Each
units
- - - - - - - - - - - - - -
RS Stock No. 812-7844
Mfr. Part No.S1DXM-M2C60M-AC120V
BrandPanasonic
HK$352.77
Each
units
120 V ac 0.5 s → 60 min Flicker OFF Start, Flicker ON Start, One Shot, Power ON Delay Panel Mount Multi Function 2 S1DXM Minutes, Seconds External - 20 mA Socket 80 V ac 132 V ac
RS Stock No. 812-7926
Mfr. Part No.LT4H8-AC24V
BrandPanasonic
HK$691.73
Each
units
24 V ac 9.999 s → 999.9 h Power ON Delay, Pulse ON Delay, Pulse One Shot, Signal Flicker, Signal OFF Delay, Signal ON Delay, Totalizing ON Delay Flush Mount Multi Function 2 - Hours, Minutes, Seconds External SPDT 5 A 8-Pin Connector - -
RS Stock No. 812-7875
Mfr. Part No.PM4HA-H-24V
BrandPanasonic
HK$341.49
Each
units
24 V ac/dc 1 s → 500 h Differential ON/OFF Delay, One Shot, Pulse Flicker, Pulse ON Delay, Pulse ON Flicker, Pulse One Cycle, Signal OFF Delay Flush Mount Multi Function 2 - Hours, Minutes, Seconds External DPDT 5 A 11-Pin Connector - -
RS Stock No. 812-7838
Mfr. Part No.PM4HS-H-24V
BrandPanasonic
HK$401.08
Each
units
24 V ac/dc 1 s → 500 h Power ON Delay Flush Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
RS Stock No. 609-8996
Mfr. Part No.S1DXMM2C10H240C-S
BrandPanasonic
HK$386.34
Each
units
220 → 240 V ac 0.05 min → 10 h Power Flicker OFF Start, Power Flicker ON Start, Power ON Delay, Power One Shot - Multi Function 2 S1DXM Hours, Minutes External DPDT 7 A Solder Tag - 250 V
RS Stock No. 228-885
Mfr. Part No.LT4HW24SJ
BrandPanasonic
HK$1,034.53
Each
units
12 → 24 V dc 0 → 9999 h, 0 → 9999 min, 0 → 9999 s Delay One Shot, Flicker OFF Start, Flicker ON Start Flush Mount Multi Function - - Hours, Minutes, Seconds External - 5 A Screw - 250 V ac
RS Stock No. 812-7920
Mfr. Part No.PMH-10H-AC120V
BrandPanasonic
HK$560.74
Each
units
100 → 120 V ac 0.05 min → 10 hr ON Delay Flush Mount Single 2 - Hours, Minutes External DPDT 7 A 8-Pin Connector - -
RS Stock No. 228-891
Mfr. Part No.PM4HAH24J
BrandPanasonic
HK$394.12
Each
units
24 V ac/dc 1 s → 500 h Differential ON/OFF Delay, Pulse Flicker, Pulse ON Delay, Pulse ON Flicker, Pulse One Cycle, Pulse One Shot, Signal OFF Delay Chassis Mount Multi Function - - Hours, Seconds External - 5 A 11-Pin Connector - 250 V ac
RS Stock No. 228-734
Mfr. Part No.LT4HW24ACSJ
BrandPanasonic
HK$982.80
Each
units
24 V ac 0 → 9999 h, 0 → 9999 min, 0 → 9999 s Delay One Shot, Flicker OFF Start, Flicker ON Start Flush Mount Multi Function - - Hours, Minutes, Seconds External - 5 A Screw - 250 V ac
RS Stock No. 812-7891
Mfr. Part No.PM4HM-H-AC240VS
BrandPanasonic
HK$602.04
Each
units
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 Screw - -
RS Stock No. 812-7954
Mfr. Part No.PMH-10M-DC12V
BrandPanasonic
HK$504.54
Each
units
12 V dc 0.05 s → 10 min ON Delay Flush Mount Single 2 - Minutes, Seconds External DPDT 7 A 8-Pin Connector - -
RS Stock No. 812-7936
Mfr. Part No.PMH-10H-DC12V
BrandPanasonic
HK$548.09
Each
units
12 V dc 0.05 min → 10 hr ON Delay Flush Mount Single 2 - Hours, Minutes External DPDT 7 A 8-Pin Connector - -
RS Stock No. 812-7967
Mfr. Part No.PM4HS-H-DC12VW
BrandPanasonic
HK$397.49
Each
units
12 V dc 1 s → 500 h Power ON Delay Flush Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -