Timer Relays | Time Delay Relays | RS
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    Timer Relays

    What are Timer Relays?

    A Timer Relay is a control relay with a time delay function built in. They serve as a combination of an electromechanical output relay and a control circuit, in which contacts can be opened or closed before or after a pre-selected timed interval. Relays can be normally open or normally closed and can be used to delay timed functions from milliseconds to hours or even days.

    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, however, for timer relays 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 kind of delay required for your application.

    What are the Types of Timer Relays?

    The most common timing function of 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 types of the Timer Delay Relays, considering what should initiate the delay and if it should start at the same time as the application, as well as when the voltage is released. More information can be found in our Timer Relays Guide

    Timer Relays are triggered/initiated by either:

    • Voltage being applied or
    • The closing or opening of a trigger signal

    Applications of Timer Relays

    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

    Browse the broad range of Timer Relays RS have to offer and order today for fast delivery.

    1061 Products showing for Timer Relays

    12 → 240V ac/dc
    DIN Rail
    0.1 s → 100h
    Asymmetric OFF/ON, Asymmetric ON/OFF
    1
    Multi Function
    -
    SPDT
    Hours, Minutes, Seconds
    External
    8A
    -
    240V ac/dc
    SPDT
    Screw
    12V ac/dc
    18mm
    -
    -
    65mm
    85mm
    +60°C
    0.1A
    24 → 240V ac/dc
    DIN Rail
    01. s → 999h
    Multifunction
    2
    Multi Function
    -
    DPST
    Hours, Minutes, Seconds
    External
    8A
    -
    240V ac/dc
    DPNO
    -
    24V ac/dc
    17.5mm
    -
    -
    76mm
    89mm
    +55°C
    0.1A
    110V ac
    Plug In
    0.1 → 3min
    ON Delay
    4
    Single
    -
    4PDT
    Minutes
    -
    3A
    -
    110V ac
    4PDT
    14-Pin Connector
    -
    21.5mm
    -
    -
    2.8mm
    53mm
    +55°C
    -
    24 V ac/dc, 240V ac
    DIN Rail
    0.3 s → 30h
    OFF Delay
    1
    Single
    -
    SPDT
    Seconds
    External
    5A
    -
    24 V ac/dc, 240V ac
    SPCO
    Screw
    -
    90mm
    -
    -
    58.5mm
    17.5mm
    +55°C
    0.1A
    12 → 230V ac/dc
    DIN Rail
    0.1 s → 100h
    ON Delay
    -
    Multi Function
    -
    SPDT
    Hours, Seconds
    -
    8A
    -
    230V
    SPDT
    Screw
    12V
    17.5mm
    -
    -
    92mm
    89mm
    +60°C
    -
    12 → 240V ac/dc
    DIN Rail
    0.1 s → 100h
    Multifunction
    1
    Multi Function
    -
    CO
    Hours, Minutes, Seconds
    External
    6A
    -
    240V ac/dc
    SPDT
    Screw
    12V ac/dc
    18mm
    -
    -
    65mm
    85mm
    +60°C
    0.1A
    24 V ac/dc, 240V ac
    DIN Rail
    0.3 s → 30h
    ON Delay
    1
    Single
    -
    SPDT
    Seconds
    External
    5A
    -
    24 V ac/dc, 240V ac
    SPCO
    Screw
    -
    90mm
    -
    -
    58.5mm
    17.5mm
    +55°C
    0.1A
    230V ac
    Plug In
    0.5 → 10min
    ON Delay
    4
    Single
    -
    4PDT
    Minutes
    -
    3A
    -
    230V ac
    4PDT
    14-Pin Connector
    -
    21.5mm
    -
    -
    2.8mm
    53mm
    +55°C
    -
    24 V ac/dc, 110V ac
    DIN Rail
    0.3 s → 30h
    ON Delay
    1
    Single
    -
    SPDT
    Seconds
    External
    5A
    -
    24 V ac/dc, 110V ac
    SPCO
    Screw
    -
    90mm
    -
    -
    58.5mm
    17.5mm
    +55°C
    0.1A
    12 → 240V ac/dc
    Plug In
    0.1 s → 100days
    ON Delay, Interval, OFF Delay, Single Shot, Delayed Pulse, Pause First, Pulse First, Pulse ON/OFF
    -
    Multi Function
    -
    DPDT
    Days, Hours, Minutes, Seconds
    External
    8A
    -
    250V
    DPDT
    11-Pin Connector
    12V ac/dc
    24mm
    -
    -
    74mm
    48mm
    +65°C
    -
    220V ac
    Panel Mount
    0.1 s → 300h
    Flicker OFF Start, Flicker ON Start, Interval, ON Delay, Signal OFF Delay, Signal ON/OFF Delay
    2
    Multi Function
    -
    DPDT
    Hours, Seconds
    -
    5A
    -
    220V ac
    DPDT
    11-Pin Connector
    -
    48mm
    -
    -
    48mm
    52.3mm
    -
    -
    230V ac
    Clamp
    -
    Interval
    1
    Single
    -
    NC, SPST
    Hours, Minutes, Seconds
    External
    -
    -
    230V ac
    DPDT
    -
    -
    65mm
    -
    -
    34.5mm
    76mm
    +80°C
    -
    12 → 240V ac/dc
    Plug In
    0.1 s → 10days
    ON Delay
    -
    Single
    -
    DPDT
    Days, Hours, Minutes, Seconds
    External
    8A
    -
    250V
    DPDT
    11-Pin Connector
    12V ac/dc
    24mm
    -
    -
    74mm
    48mm
    +65°C
    -
    24 → 240V ac/dc
    DIN Rail
    01. s → 999h
    Multifunction
    2
    Multi Function
    -
    DPST
    Hours, Minutes, Seconds
    External
    8A
    -
    240V ac/dc
    DPNO
    -
    24V ac/dc
    17.5mm
    -
    -
    76mm
    89mm
    +55°C
    0.1A
    12 → 230V ac/dc
    DIN Rail
    0.1 s → 100h
    -
    -
    Multi Function
    -
    SPDT
    Hours, Seconds
    -
    8A
    -
    230V
    SPDT
    Screw
    12V
    17.5mm
    -
    -
    92mm
    89mm
    +60°C
    -
    24V dc
    Plug In
    0.2 → 5s
    ON Delay
    2
    Single
    -
    DPDT
    Seconds
    -
    5A
    -
    24V dc
    DPDT
    8-Pin Connector
    -
    21.5mm
    -
    -
    2.8mm
    53mm
    +55°C
    -
    12 → 240V ac/dc
    Plug In
    0.1 s → 10days
    ON Delay
    -
    Single
    -
    DPDT
    Days, Hours, Minutes, Seconds
    External
    8A
    -
    250V
    DPDT
    8-Pin Connector
    12V ac/dc
    24mm
    -
    -
    74mm
    48mm
    +65°C
    -
    12 → 240V ac
    DIN Rail
    0.1s to 100h
    -
    2
    Multi Function
    -
    DPDT
    Hours, Minutes, Seconds
    External
    -
    -
    240V ac/dc
    DPDT
    Screw
    12V
    65mm
    -
    -
    90mm
    18mm
    +60°C
    -
    12 → 240V ac/dc
    DIN Rail
    0.1 s → 10days
    ON Delay, Interval, OFF Delay, Single Shot, Delayed Pulse, Pause First, Pulse First, Pulse ON/OFF
    4
    Multi Function
    -
    4PDT
    Days, Hours, Minutes, Seconds
    External
    8A
    -
    -
    4PDT
    Screw
    12V ac/dc
    27mm
    -
    -
    65mm
    90mm
    +65°C
    -
    24 → 240V ac/dc
    DIN Rail
    01. s → 999h
    Multifunction
    1
    Multi Function
    -
    SPDT
    Hours, Minutes, Seconds
    External
    8A
    -
    240V ac/dc
    SPDT
    -
    24V ac/dc
    17.5mm
    -
    -
    76mm
    89mm
    +55°C
    0.1A
    Resultater per side