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 812-7958
製造零件編號PMH-10M-DC24V
BrandPanasonic
HK$516.76
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 812-7904
製造零件編號PM4HM-H-AC240VW
BrandPanasonic
HK$561.87
單位
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庫存編號 812-7901
製造零件編號PM4HM-H-AC240VSW
BrandPanasonic
HK$555.61
單位
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庫存編號 812-7888
製造零件編號PM4HS-H-AC240V
BrandPanasonic
HK$387.86
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 812-7951
製造零件編號PMH-10M-AC24V
BrandPanasonic
HK$530.47
單位
24 V ac 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 812-7954
製造零件編號PMH-10M-DC12V
BrandPanasonic
HK$509.78
單位
12 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 812-7866
製造零件編號S1DXMA2C10MAC120V
BrandPanasonic
HK$384.77
單位
120 V ac 0.05 s → 10 min Power ON Delay Panel Mount Single 2 S1DXM Minutes, Seconds External - 20 mA Socket 80 V ac 132 V ac
RS庫存編號 812-7844
製造零件編號S1DXM-M2C60M-AC120V
BrandPanasonic
HK$384.77
單位
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庫存編號 812-7869
製造零件編號S1DXMA2C10MAC220V
BrandPanasonic
HK$384.77
單位
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庫存編號 228-706
製造零件編號LC4HSVR424SJ
BrandPanasonic
HK$1,500.96
單位
24 V ac - - Panel Mount - - - - - - - - - -
RS庫存編號 228-784
製造零件編號PM4HAH24SJ
BrandPanasonic
HK$416.75
單位
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 Screw - 250 V ac
RS庫存編號 228-683
製造零件編號LT4HW240ACJ
BrandPanasonic
HK$1,000.72
單位
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 11-Pin Connector - 250 V ac
RS庫存編號 812-7908
製造零件編號LT4HWT-AC240VS
BrandPanasonic
HK$1,060.80
單位
100 → 240 V ac 99.99 s → 9999 h Delay One Shot, Flicker OFF Start, Flicker ON Start Flush Mount Multi Function 2 - Hours, Minutes, Seconds External Transistorised N/O 100 mA Screw - -
RS庫存編號 812-7897
製造零件編號PM4HM-H-AC240V
BrandPanasonic
HK$551.40
單位
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庫存編號 812-7926
製造零件編號LT4H8-AC24V
BrandPanasonic
HK$742.92
單位
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庫存編號 812-7863
製造零件編號S1DXM-A2C10M-AC24V
BrandPanasonic
HK$384.77
單位
24 V ac 0.05 s → 10 min Power ON Delay Panel Mount Single 2 S1DXM Minutes, Seconds External - 80 mA Socket 19.2 V ac 26.4 V ac
RS庫存編號 228-841
製造零件編號LT4H-AC240VS
BrandPanasonic
HK$913.85
單位
100 → 240 V ac 0 → 9999 h, 0 → 9999 min, 0 → 9999 s Power ON Delay, Pulse ON Delay, Pulse One Shot, Signal Flicker, Signal OFF Delay, Signal ON Delay, Totalizing ON Delay Flush Mount Multi Function - - Hours, Minutes, Seconds External - 5 A Screw - 250 V ac
RS庫存編號 228-857
製造零件編號PM4HAHAC240J
BrandPanasonic
HK$416.75
單位
100 → 240 V ac 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庫存編號 228-677
製造零件編號PM4HWHAC240SWJ
BrandPanasonic
HK$762.34
單位
100 → 240 V ac 1 s → 500 h Cyclic - Single - - Hours, Seconds - - 5 A Screw - 250 V ac
RS庫存編號 812-7894
製造零件編號LT4HW-AC240VS
BrandPanasonic
HK$887.59
單位
100 → 240 V ac 99.99 s → 9999 h Delay One Shot, Flicker OFF Start, Flicker ON Start Flush Mount Multi Function 2 - Hours, Minutes, Seconds External SPDT 5 A Screw - -