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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Omschrijving Prijs 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-stocknr. 812-7875
FabrikantnummerPM4HA-H-24V
FabrikantPanasonic
47,51 €
Each
Aantal stuks
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-stocknr. 228-784
FabrikantnummerPM4HAH24SJ
FabrikantPanasonic
49,92 €
Each
Aantal stuks
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-stocknr. 228-841
FabrikantnummerLT4H-AC240VS
FabrikantPanasonic
109,46 €
Each
Aantal stuks
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-stocknr. 812-7897
FabrikantnummerPM4HM-H-AC240V
FabrikantPanasonic
62,50 €
Each
Aantal stuks
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-stocknr. 228-891
FabrikantnummerPM4HAH24J
FabrikantPanasonic
45,66 €
Each
Aantal stuks
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-stocknr. 812-7908
FabrikantnummerLT4HWT-AC240VS
FabrikantPanasonic
120,24 €
Each
Aantal stuks
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-stocknr. 812-7881
FabrikantnummerLT4HW8-DC24V
FabrikantPanasonic
122,65 €
Each
Aantal stuks
12 → 24 V dc 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 8-Pin Connector - -
RS-stocknr. 812-7910
FabrikantnummerPM4HW-H-AC240VW
FabrikantPanasonic
89,62 €
Each
Aantal stuks
100 → 240 V ac 1 s → 500 h Cycle Flush Mount Dual Function 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
RS-stocknr. 812-7917
FabrikantnummerPM4HS-H-DC12V
FabrikantPanasonic
43,62 €
Each
Aantal stuks
12 V dc 1 s → 500 h Power ON Delay Flush Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
RS-stocknr. 812-7926
FabrikantnummerLT4H8-AC24V
FabrikantPanasonic
108,50 €
Each
Aantal stuks
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-stocknr. 812-7914
FabrikantnummerLT4H8-AC240V
FabrikantPanasonic
107,81 €
Each
Aantal stuks
100 → 240 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-stocknr. 228-835
FabrikantnummerLT4H24SJ
FabrikantPanasonic
91,72 €
Each
Aantal stuks
12 → 24 V dc 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-stocknr. 812-7964
FabrikantnummerS1DX-A2C60S-AC120V
FabrikantPanasonic
50,51 €
Each
Aantal stuks
120 V ac 60 s Power ON Delay Panel Mount Single 2 - Seconds External - 20 mA Socket 80 V ac 132 V ac
RS-stocknr. 812-7894
FabrikantnummerLT4HW-AC240VS
FabrikantPanasonic
126,73 €
Each
Aantal stuks
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 - -
RS-stocknr. 812-7967
FabrikantnummerPM4HS-H-DC12VW
FabrikantPanasonic
43,62 €
Each
Aantal stuks
12 V dc 1 s → 500 h Power ON Delay Flush Mount Single 2 - Hours, Minutes, Seconds External DPDT 5 A 8-Pin Connector - -
RS-stocknr. 812-7901
FabrikantnummerPM4HM-H-AC240VSW
FabrikantPanasonic
68,21 €
Each
Aantal stuks
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-stocknr. 812-7904
FabrikantnummerPM4HM-H-AC240VW
FabrikantPanasonic
63,68 €
Each
Aantal stuks
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-stocknr. 812-7879
FabrikantnummerPM4HA-H-AC240V
FabrikantPanasonic
49,74 €
Each
Aantal stuks
100 → 240 V ac 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-stocknr. 228-908
FabrikantnummerLT4HW240ACSJ
FabrikantPanasonic
119,84 €
Each
Aantal stuks
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-stocknr. 812-7945
FabrikantnummerPMH-10H-DC24V
FabrikantPanasonic
55,29 €
Each
Aantal stuks
24 V dc 0.05 min → 10 hr ON Delay Flush Mount Single 2 - Hours, Minutes External DPDT 7 A 8-Pin Connector - -