Latching/Non-Latching Signal Relay Switches | RS
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    Signal Relays

    Signal relays are a type of electrically operated mechanical switch. They are operated by electrical impulses with the primary function to open and close a circuit. Relays can also be referred to as industrial switches. There are 2 main types of relay category available, latching and non–latching relays.

    Relays are used within PCBs for switching purposes. Signal relays are designed for low currents and low voltages. They can be used for up to 2A switching. Power relays are another type of relay which is suitable for high currents and voltages.

    What is the difference between latching and non-latching relays?

    Both types of relays in similar in design and function, however, a significant difference between them is that a latching relay will remain in the last position it when it was last powered, whereas a non-latching goes back to its normal position. This makes each more type of relay suitable for different applications.

    How to choose a signal relay:

    When choosing a relay, it is important to consider a number of specifications to ensure it is fit for purpose, some factors include:

    • Coil voltage - the required voltage to actuate the switching mechanism. If a voltage is too high this could damage the components, if it is too low then it will not actuate
    • Contact configuration - This is the state the contacts are in without power. For example SPST, single pole single throw
    • Contact material - the relay contacts are available in many materials that have certain properties. Common materials are gold, silver, tin oxide and nickel
    • Coil power - the amount of power (watts) the coil operates at. This must match the power in the circuit for correct function
    • Coil resistance - the amount of resistance (ohms) in the circuit that the coil creates

    832 Products showing for Signal Relays

    Omron
    Latching
    12V dc
    DPDT
    PCB Mount
    500mA
    500 mA
    -
    500 mA
    250V ac
    220V dc
    60 W
    -
    20.2mm
    10.1mm
    8.4mm
    20.2 x 10.1 x 8.4mm
    Through Hole
    Signal
    -
    Omron
    -
    12V dc
    DPDT
    PCB Mount
    1A
    -
    -
    1 A
    125V
    125V
    24 W
    G5V
    20.5mm
    10.4mm
    11.2mm
    20.5 x 10 x 11.5mm
    Through Hole
    Signal
    2
    Panasonic
    Latching
    3V dc
    DPDT
    PCB Mount
    2A
    7.5 A
    -
    7.5 A
    250V ac
    220V dc
    60 W
    -
    15mm
    7.4mm
    8.2mm
    15 x 8.2 x 7.4mm
    Through Hole
    -
    -
    Omron
    -
    3V dc
    DPDT
    Surface Mount
    1A
    -
    Single
    -
    -
    -
    -
    G6K
    -
    -
    -
    -
    -
    -
    2
    Omron
    -
    24V dc
    DPDT
    PCB Mount
    2A
    2 A
    -
    1 A
    250V
    220V
    60 W
    G6A
    20.2mm
    10.1mm
    8mm
    20.2 x 8 x 10.1mm
    PCB Pin
    Signal
    2
    TE Connectivity
    -
    12V dc
    DPDT
    Surface Mount
    0.4A
    1 mA
    Single
    -
    -
    -
    -
    Axicom IM
    10mm
    -
    5.65mm
    10 x 6 x 5.65mm
    -
    -
    2
    TE Connectivity
    -
    12V dc
    DPDT
    Surface Mount
    0.4A
    1 mA
    Single
    -
    -
    -
    -
    Axicom IM
    10mm
    -
    5.65mm
    10 x 6 x 5.65mm
    -
    -
    2
    TE Connectivity
    -
    3V dc
    DPDT
    Surface Mount
    2A
    -
    -
    2 A
    250V ac
    220V dc
    60 W
    IM
    10mm
    6mm
    5.65mm
    10 x 6 x 5.65mm
    Through Hole
    Access & Transmission Equipment, Automotive Applications, Consumer Electronics, HVAC, Industrial Controls, Measurement & Test Equipment, Medical Equipment, Modems, Office & Business Equipment, Optical Network Terminals, T
    2
    Omron
    -
    5V dc
    SPST
    PCB Mount
    1A
    -
    -
    1 A
    125V
    60V dc
    30 W
    HFD31
    10.6mm
    7mm
    3.8mm
    10.6 x 3.8 x 7mm
    PCB Pin
    Signal
    1
    Panasonic
    Latching
    12V dc
    DPDT
    PCB Mount
    1A
    1 A
    -
    2 A
    125V ac
    220V dc
    60 W
    -
    14mm
    11.5mm
    5.6mm
    14 x 5.6 x 11.5mm
    Surface Mount
    General Purpose
    -
    Omron
    -
    5V dc
    DPDT
    PCB Mount
    1A
    -
    -
    1 A
    125V
    125V
    24 W
    Cradle N
    20.5mm
    10mm
    11.5mm
    20.5 x 10 x 11.5mm
    Through Hole
    Signal
    2
    TE Connectivity
    -
    24V dc
    DPDT
    PCB Mount
    2A
    -
    -
    2 A
    250V ac
    220V dc
    30 W
    MT2
    20.2mm
    10mm
    11mm
    20.2 x 10 x 11mm
    Through Hole
    Signal
    2
    Omron
    Latching
    12V dc
    DPDT
    PCB Mount
    2A
    2 A
    -
    2 A
    250V ac
    220V dc
    60 W
    -
    20.2mm
    10.1mm
    8.4mm
    20.2 x 8.4 x 10.1mm
    Through Hole
    -
    -
    Panasonic
    -
    9V dc
    DPDT
    PCB Mount
    -
    1 A
    Dual
    1 A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Panasonic
    Latching
    4.5V dc
    DPDT
    PCB Mount
    1A
    1 A
    -
    1 A
    125V ac
    110V dc
    30 W
    -
    10.6mm
    7.2mm
    5.2mm
    10.6 x 5.2 x 7.2mm
    Through Hole
    Signal
    -
    Omron
    -
    24V dc
    DPDT
    PCB Mount
    1A
    -
    Single
    -
    -
    -
    -
    G5V-2
    -
    -
    -
    -
    -
    -
    2
    Panasonic
    -
    3V dc
    DPDT
    PCB Mount
    -
    -
    Single
    2 A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Panasonic
    Latching
    4.5V dc
    DPDT
    PCB Mount
    1A
    1 A
    -
    -
    125V ac
    110V dc
    30 W
    -
    10.6mm
    7.2mm
    5.2mm
    10.6 x 5.2 x 7.2mm
    Through Hole
    Signal
    -
    Panasonic
    -
    4.5V dc
    DPDT
    Surface Mount
    -
    1 A
    Single
    1 A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Omron
    -
    24V dc
    DPDT
    PCB Mount
    2A
    -
    -
    2 A
    125V
    125V
    60 W
    MT
    20.2mm
    10mm
    11.5mm
    20.5 x 10 x 11.5mm
    Through Hole
    Signal
    2
    Resultater per side