Recently searched

    Relays & Signal Conditioning

    At RS, we stock a large choice of relay switch products for a wide variety of applications. Within our range, you will find products such as latching and non-latching relays, solid state relays, interface relays and reed relays. All our relay switch products are from trusted electrical relay suppliers such as our own RS PRO brand, Omron, Finder, TE Connectivity, Panasonic, Phoenix Contact and more.

    What is a relay?

    Relays are a type of switch that operate electronically to turn AC or DC currents on or off within an electrical circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, but the main difference lies in how a relay is operated by an electrical circuit rather than manually pressed.

    Relays have many different uses and are often utilised in situations where isolation is necessary or when a circuit needs to be controlled with a low-power signal. There are also specialised types of relay switches that are used for very high-power applications; these are referred to as contactors.

    Types of relay

    Electromechanical Relay (EMR): An electromechanical relay uses a physical moving arm, triggered by a voltage applied to the relay coil, this arm connects contacts within the output component of the relay. The movement of the arm allows an electrical circuit to be completed, allowing AC or DC current to flow to the connected equipment. The physical components within the relays commonly make a "click" sound, which can be used as an audible operation indicator.

    Solid State Relay (SSR): Solid state relays provide a similar function to an EMR but these do not contain any moving components, increasing long-term reliability. SSR' feature semiconductor switching elements; typically thyristors, triacs and diodes that transmit and energise the output signal. When activated, the input signal acts like a switch that allows a high-voltage signal to pass through the SSRs output components.

    Shop relays, relay accessories, and signal conditioners isolators at RS today.

    Relay Accessories
    Relay Accessories
    Relays
    Relays
    Signal Conditioners & Isolators
    Signal Conditioners & Isolators

    15641 Products showing for Relays & Signal Conditioning

    5 of 783
    RS PRO Signal Conditioner, Current Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 192-3395
    Each
    SGD126.32
    Finder 38 Series Interface Relay, DIN Rail Mount, 24V dc Coil, SPST
    • RS Stock No. 666-7930
    • Mfr. Part No. 38.41.7.024.9024
    Each
    SGD94.69
    Crouzet Syr-Line Series Panel Mount Timer Relay, 24 → 240V ac/dc, 1-Contact, 0.001 → 9.999 s, 0.01
    • RS Stock No. 166-3813
    • Mfr. Part No. GDF1R10MV2
    Each
    SGD432.28
    Tele E1ZM10 Series DIN Rail Mount Timer Relay, 24 → 240V ac/dc, 1-Contact, 0.05 s → 100h, SPDT
    • RS Stock No. 160-290
    • Mfr. Part No. E1ZM10 24-240V AC/DC
    Each
    SGD127.18
    Better World
    Schneider Electric Plug In Power Relay, 125V dc Coil, 8A Switching Current, 4PDT
    • RS Stock No. 884-1553
    • Mfr. Part No. RXM4AB2GD
    Each
    SGD18.69
    Durakool Plug In Power Relay, 24V dc Coil, 60A Switching Current, SPDT
    • RS Stock No. 915-6682
    • Mfr. Part No. DG85F-7011-96-1024-M1
    Each
    SGD8.30
    Omron 8 Pin 250V ac DIN Rail Relay Socket, for use with MY2IN, MY2IN1, MY2IN1-D2, MY2IN-CR, MY2IN-D2, MY2N, MY2N1,
    • RS Stock No. 196-6169
    • Mfr. Part No. PYF08A-N
    Each
    SGD13.52
    TE Connectivity PCB Mount Power Relay, 24V dc Coil, 8A Switching Current, DPDT
    • RS Stock No. 680-3849
    • Mfr. Part No. RT424024 6-1393243-8
    Each
    SGD6.58
    Phoenix Contact PCB Mount Power Relay, 12V dc Coil, 8A Switching Current, DPDT
    • RS Stock No. 508-0001
    • Mfr. Part No. 2961257
    Each
    SGD13.80
    Finder PCB Mount Relay, 12V dc Coil, 10A Switching Current, DPDT
    • RS Stock No. 182-9780
    • Mfr. Part No. 40.62.7.012.4000
    Each
    SGD12.65
    Omron PCB Mount Power Relay, 12V dc Coil, 5A Switching Current, SPST
    • RS Stock No. 512-9336
    • Mfr. Part No. G6D-1A-ASI DC12
    Each
    SGD9.05
    Siemens Thermistor Motor Protection Monitoring Relay, DPDT, 24 → 240V ac/dc, DIN Rail
    • RS Stock No. 175-2274
    • Mfr. Part No. 3RN2010-1BW30
    Each
    SGD192.14
    Finder Force Guided Relay, 24V dc Coil Voltage, 6 Pole, 5NO/1NC
    • RS Stock No. 249-4458
    • Mfr. Part No. 7S.36.9.024.5510
    Each
    SGD181.53
    Phoenix Contact RIF-1-RPT-LV-230AC/2X21AU Series Interface Relay, DIN Rail Mount, 230V ac Coil, DPDT, 2-Pole
    • RS Stock No. 794-3705
    • Mfr. Part No. 2903327
    Each
    SGD20.88
    ABB Temperature Monitoring Relay, DPDT, DIN Rail
    • RS Stock No. 876-5049
    • Mfr. Part No. 1SVR740712R1200 CM-MSS.41P
    Each
    SGD248.59
    RS PRO Solid State Relay, 2 A Load, DIN Rail Mount, 30 V Load, 30 V Control
    • RS Stock No. 888-6859
    Each (In a Pack of 5)
    SGD43.632
    ABB CR-M DIN Rail Relay Socket, for use with CR-M Interface Relay
    • RS Stock No. 231-9512
    • Mfr. Part No. 1SVR405651R3000 CR-M4SS
    Each
    SGD11.30
    Weidmuller TRS Series Interface Relay, DIN Rail Mount, 24V Coil, SPDT, 1-Pole, 6A Load
    • RS Stock No. 892-8789
    • Mfr. Part No. 1122770000
    Each
    SGD18.90
    Turck Module
    • RS Stock No. 808-6594
    • Mfr. Part No. WM1
    Each
    SGD29.32
    Omron PCB Mount Force Guided Relay, 24V dc Coil Voltage, 4 Pole, DPDT
    • RS Stock No. 548-048
    • Mfr. Part No. G7SA-2A2B DC24
    Each
    SGD55.51
    Results per page
    1
    5
    783

    Related links