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. 746-5132
Mfr. Part No.3RP1513-1AP30
BrandSiemens
kr 557,04
Each
Units
24 V ac/dc, 200 → 240 V ac 5 → 100 s ON Delay DIN Rail Single 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 834-7461
Mfr. Part No.3RP1511-1AQ30
BrandSiemens
kr 521,64
Each
Units
100 → 127 V 0.5 → 10 s ON Delay DIN Rail Single 1 - Seconds External SPDT 1 A Screw - -
RS Stock No. 746-5114
Mfr. Part No.3RP1505-1BQ30
BrandSiemens
kr 1 184,94
Each
Units
24 V dc, 100 → 127 V ac 5 → 100 s - 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 Stock No. 746-5123
Mfr. Part No.3RP1505-1BT20
BrandSiemens
kr 1 273,53
Each
Units
400 → 440 V ac 1.5 → 30 min - DIN Rail Multi Function 2 - Minutes External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 392-7217
Mfr. Part No.3RP15111AP30
BrandSiemens
kr 582,21
Each
Units
24 V ac, 24 V dc, 200 → 240 V ac 0.5 → 10 s ON Delay - Single - - Seconds External SPDT - Screw - -
RS Stock No. 392-7188
Mfr. Part No.3RP1574-1NP30
BrandSiemens
kr 962,02
Each
Units
200 240 V 1 20 s WYE Delta - Single 2 - Seconds External SPDT - Screw - -
RS Stock No. 834-7473
Mfr. Part No.3RP1512-1AP30
BrandSiemens
kr 521,64
Each
Units
200 240 V 1.5 30 s ON Delay DIN Rail Single 1 - Seconds External SPDT 1 A Screw - -
RS Stock No. 834-7467
Mfr. Part No.3RP1505-2BW30
BrandSiemens
kr 1 389,68
Each
Units
24 → 240 V 0.05 s → 100 h Additive ON Delay With Control Signal, OFF Delay with Control Signal, OFF Delay/Instantaneous With Control Signal, ON Delay, ON Delay/Instantaneous Contact, ON Delay/OFF Delay/Instantaneous With Control Signal, Passing Break Contact With Control Signal, Passing Break Contact/Instantaneous With Control Signal, Passing Make Contact, Passing Make Contact/Instantaneous Contact, Pulse-Shaping /Instantaneous With Control Signal DIN Rail Multi Function 2 - Hours, Minutes, Seconds External DPDT 1 A Cage Clamp - -
RS Stock No. 834-7502
Mfr. Part No.3RP1574-2NP30
BrandSiemens
kr 686,78
Each
Units
200 → 240 V 1 → 20 s - DIN Rail Multi Function 2 - Seconds External SPNO 1 A Cage Clamp - -
RS Stock No. 746-5126
Mfr. Part No.3RP1505-1BW30
BrandSiemens
kr 1 450,72
Each
Units
24 240 V ac/dc 0.5 10 min - DIN Rail Multi Function 2 - Minutes External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 746-5110
Mfr. Part No.3RP1505-1AW30
BrandSiemens
kr 1 173,87
Each
Units
24 → 240 V ac/dc 1.5 → 30 s - DIN Rail Multi Function 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 834-7470
Mfr. Part No.3RP1511-2AP30
BrandSiemens
kr 531,71
Each
Units
200 → 240 V 0.5 → 10 s ON Delay DIN Rail Multi Function 1 - Seconds External SPDT 1 A Cage Clamp - -
RS Stock No. 392-7223
Mfr. Part No.3RP1505-1BP30
BrandSiemens
kr 1 239,00
Each
Units
24 V ac, 24 V dc, 200 240 V ac 0.5 10 s - - Multi Function - - Seconds External DPDT - Screw - -
RS Stock No. 746-5120
Mfr. Part No.3RP1505-1RW30
BrandSiemens
kr 1 738,65
Each
Units
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 Stock No. 831-6029
Mfr. Part No.3RP2513-1AW30
BrandSiemens
kr 522,16
Each
Units
12 → 240 V ac/dc 5 → 100 s ON Delay - Single 1 - Seconds - SPDT - Screw 12 V ac/dc 240 V ac/dc
RS Stock No. 746-5189
Mfr. Part No.3RP1576-1NP30
BrandSiemens
kr 720,94
Each
Units
24 V ac/dc, 200 240 V ac 3 60 s WYE Delta DIN Rail Single 2 - Seconds External SPNO 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 470-7935
Mfr. Part No.3RP2025-1AP30
BrandSiemens
kr 647,54
Each
Units
24 V ac/dc, 110 → 240 V ac 0.05 → 100 h, 0.05 → 100 min, 0.05 → 100 s ON Delay DIN Rail Single 1 - Hours, Minutes, Seconds External SPDT 1 (dc) A, 3 (ac) A Screw - 250 V ac/dc
RS Stock No. 392-7201
Mfr. Part No.3RP1525-1AP30
BrandSiemens
kr 753,27
Each
Units
24 V ac, 24 V dc, 200 240 V ac 0.5 s 360000 s ON Delay - Single - - Seconds External SPDT - Screw - -
RS Stock No. 746-5145
Mfr. Part No.3RP1525-1BP30
BrandSiemens
kr 799,56
Each
Units
24 V ac/dc, 200 → 240 V ac 0.05 → 1 min ON Delay DIN Rail Single 2 - Minutes External DPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac
RS Stock No. 746-5117
Mfr. Part No.3RP1505-1AQ30
BrandSiemens
kr 1 047,62
Each
Units
24 V dc, 100 → 127 V ac 0.15 → 3 s - DIN Rail Multi Function 1 - Seconds External SPDT 1 (dc) A, 3 (ac) A Screw 24 V ac/dc 250 V dc, 400 V ac