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 Stock No. 179-2929
BrandRS PRO
MYR151.00
Each
units
230 V ac 0.5 → 10 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 178-5022
BrandRS PRO
MYR290.98
Each
units
- - - - - - - - - - - - - -
RS Stock No. 179-2933
BrandRS PRO
MYR151.00
Each
units
230 V ac 0.1 → 3 min On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 179-2969
BrandRS PRO
MYR176.95
Each
units
110 V ac 0.5 → 10 s On-Delay Plug-In Mount 1 4 - - - 4PDT 3 A - - 110 V ac
RS Stock No. 161-7604
BrandRS PRO
MYR268.60
Each
units
10.5 265 V ac/dc 0.6 s 60 min ON Delay, ON Pulse, Symmetrical Recycler with Pause Start, Symmetrical Recycler with Pulse Start DIN Rail Multi Function 1 - Minutes, Seconds External - 8 A Screw 10.5 V ac/dc 265 V ac/dc
RS Stock No. 179-2940
BrandRS PRO
MYR158.72
Each
units
110 V ac 1 → 30 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 110 V ac
RS Stock No. 179-2950
BrandRS PRO
MYR158.72
Each
units
24 V dc 1 → 30 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 24 V dc
RS Stock No. 102-6123
BrandRS PRO
MYR156.80
Each
units
12 230 V ac/dc - - DIN Rail - - - - - DPDT - Screw - -
RS Stock No. 179-2913
BrandRS PRO
MYR689.69
Each
units
12 48 V dc 99 min 59 s Power On Delay Plug-In Mount 1 1 - - External SPDT 5 A - 12 V dc 48 V dc
RS Stock No. 179-2898
BrandRS PRO
MYR689.69
Each
units
100 240 V ac 99.99 s Power On Delay Plug-In Mount 1 1 - - External SPDT 5 A - 100 V ac 240 V ac
RS Stock No. 178-5029
BrandRS PRO
MYR262.96
Each
units
- - - - - - - - - - - - - -
RS Stock No. 179-2957
BrandRS PRO
MYR169.13
Each
units
230 V ac 0.1 → 1 s On-Delay Plug-In Mount 1 4 - - - 4PDT 3 A - - 230 V ac
RS Stock No. 178-5025
BrandRS PRO
MYR262.96
Each
units
- - - - - - - - - - - - - -
RS Stock No. 179-2965
BrandRS PRO
MYR176.95
Each
units
230 V ac 1 → 30 min On-Delay Plug-In Mount 1 4 - - - 4PDT 3 A - - 230 V ac
RS Stock No. 179-2928
BrandRS PRO
MYR151.00
Each
units
230 V ac 0.2 → 5 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 161-7612
BrandRS PRO
MYR281.30
Each
units
10.5 265 V ac/dc 0.6 s 60 min Off Pulse, ON Pulse with Control Switch, ON Pulse without Control Switch, On-Off Pulse Plug In Multi Function 1 - Minutes, Seconds External - 8 A 11-Pin Connector 10.5 V ac/dc 265 V ac/dc
RS Stock No. 179-2932
BrandRS PRO
MYR151.00
Each
units
230 V ac 2 → 60 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 179-2927
BrandRS PRO
MYR151.00
Each
units
230 V ac 0.1 → 1 s On-Delay Plug-In Mount 1 2 - - - DPDT 5 A - - 230 V ac
RS Stock No. 179-2959
BrandRS PRO
MYR169.13
Each
units
230 V ac 0.5 → 10 s On-Delay Plug-In Mount 1 4 - - - 4PDT 3 A - - 230 V ac
RS Stock No. 161-7605
BrandRS PRO
MYR291.29
Each
units
10.5 265 V ac/dc 0.6 s 60 min Off Pulse, ON Pulse with Control Switch, ON Pulse without Control Switch, On-Off Pulse DIN Rail Multi Function 1 - Minutes, Seconds External - 8 A Screw 10.5 V ac/dc 265 V ac/dc
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